$45 - Buy This Amplifier! Cheaper And Better Sounding Stereo. Spend Less On Vintage HiFi Audio Gear

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You don't have to spend a fortune to get the great sound. This Kenwood KA-5002 proves it! Classic vintage sound from 1970.
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Timecodes
0:00 - Intro
3:43 - Initial Inspection
4:56 - Power Up
10:12 - Start Of The Restoration
18:30 - History Of The Kenwood Corporation
26:49 - Continuing The Restoration
1:09:34 - Bench Testing
1:16:55 - Conclusion And Listening Impression

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Опубликовано:

28 июн 2024

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Комментарии : 345

@gabrielanak6000 8 месяцев назад

What a great presentation of restoring a beautiful amp !!! Deserves my total respect & admiration !

@craigm.9070 2 года назад

Sometimes you just have to wonder if this equipment knows it's being saved for another life and just lets it out. These were fantastic sounding little amps, then and now. Thanks for your time posting this!

@vintageaudioaddict 2 года назад

Your welcome and well said!

@charlesjefferis8812 2 года назад

owned the KA-6000 for many years . . bought it when it first came out. . . fantastic integrated amp!

@vintageaudioaddict 2 года назад

Yes, it is. Kenwood made a lot of great gear back in the day.

@9999plato 2 года назад

Nothing wrong with old Kenwood stuff. I had one in High School and was able to pick up a 60 watt Kenwood receiver for $75 from EBAY that only has one lamp out. Better than the 20 watt model I had back then. Got a nice monster 140 watt Sansui receiver too. Much better than the new home theater receivers made today.

@vintageaudioaddict 2 года назад

Couldn't agree more. Thanks for commenting.

@lwh7301 4 месяца назад

Typical Japanese mass-fi from the 70's. Nothing special aurally; just lots of bells and whistles..and meaningless specs.

@pizzainthebox3449 2 года назад

Just discovered your channel. Loved the history and Kenwood commercial! Japanese Americans who went back to Japan for education were known as “Kibei” (key-bay). Those that came back and volunteered for service during WWII were in the intelligence arm and they directly broke the Japanese codes to help the US win in the pacific theater. My high school friend’s mother worked for Kenwood in Gardena, California, where I grew up. At the time, Gardena had one of the highest concentrations of Japanese Americans. I got her employee discount for a nice cassette recorder that I wish I still had. I’m still looking for a vintage Kenwood receiver to complete my home stereo setup, thus landing me here on your channel. Thanks for your wonderful video and instruction!

@vintageaudioaddict 2 года назад

Your welcome! Thank you for the information and for sharing your story. I really enjoy the history behind this equipment.

@phonatic 2 года назад

Whenever you present another vintage Kenwood, my heart lightens up. Awesome!

@vintageaudioaddict 2 года назад

Thank you. Kenwood made some great audio gear back in the day.

@jacobzwikelmaier6163 2 года назад

Just Found your channel and it's Excellent! Love the content and the long videos are perfect as I often play these types of videos while I work on my own gear . Found this video while searching because next up on the bench is a Kenwood KA-6000 that I got from an older Gentleman that was about to put it to the curb! Imagine that! It works and is in good condition but is all original and a perfect candidate for restoration. It has a lot of the same boards as the KA-5002. The amplifier board looks identical. Your video has some good hints and will be helpful. Perfect timing. Really enjoy that you Include the company history in your videos . Keep up the good work and Thanks !

@vintageaudioaddict 2 года назад

Your welcome. Thank you so much for your kind words.

@user-mk8lw1bh4e Год назад

Excellent all your videos, for those who like vintage hifi. Even if you're a layman in electronics, it's a pleasure to watch them and enjoy their expert knowledge. After watching your Kenwood KA 5002 and 3500 videos, because I have a Kenwood KA 2500, which I love for its sweet, true analogue sound, so I would love to see a video about it you made! Who knows one day??? Thanks

@michaelmasztal7871 2 года назад

Sweet! I had the KA-7002 which I bought in 1972. It was a great amp. I lost track of it after going in the Army, but I had many fond memories of it.

@vintageaudioaddict 2 года назад

Thank you for sharing and for your service.

@Jason-wc3fh Год назад

I still have one that needs some work. You can buy mine off me for a measly 100 million dollars!

@hardball107 Год назад

Fantastic video. I believe we are of the same vintage and the 70's for an audio addict were unbelievable. At 18 I bought a Toshiba 40 watt/channel receiver and a set of Klipsch K Horns at the recommendation of an older friend that was an audio engineer at the time. Well in the belief that bigger is better I continued to trade up over the next 5 years from records ( skipped all over the place at higher SPL) to an Akai reel to reel and eventually ending up with a Kenwood KR-8050. I still have the K Horns and the 8050 and they still continue to amaze after 49 years, the neighbors like the sound so much they keep throwing bricks thru my windows so they can hear my system better. My daughter already grabbed an KR-8050, a B&O direct drive turntable and a set of AR-4x speakers for spinning vinyl, just love the sound.

@vintageaudioaddict Год назад

Thanks for watching and sharing. I still have some of my stereo equipment from the 70's, wish I had more of it. It's really that your daughter has some gear.

@magnustorque5528 2 года назад

Fantastic detailed production. Really well done! Working on this vintage stuff is so rewarding, and the results are worth it. You end up with much higher quality gear than the junk that is being produced today. I;d also argue the sonics are better.

@vintageaudioaddict 2 года назад

Thank you kindly! I appreciate your kind words. Yes, the vintage gear was made to last. I'm sure someone will be listening to this integrated amplifier on her 100th birthday.

@TheC5corvette Год назад

Just finished watching this video again,,, while playing my KA-6000 (MADE IN 1969-70) which is built alot like this Amp And is still kicking and strong, and low noise floor.. Visually its flawless , and inside the unit it looks orig... Not bad for 52 years old... Something special about the sound after its been up and running 30 mins... I also been playing a Sansui 4000 receiver i picked up,,, and has a similar sound,. At least to my ears..

@justincase3880 2 года назад

The Hakko FR300 (or equivalent) vacuum desoldering tool is a must/indispensable! .. worth every penny …

@vintageaudioaddict 2 года назад

Yes, Sir!

@emrelsd 2 года назад

I shared this grwat video with Vintage Kenwood lovers facebook group also. This is a great video. I loved how you explained the history and shared documentation! Well done!

@vintageaudioaddict 2 года назад

Awesome! Thank you!

@curtwow 2 года назад

Love my Kenwood 600(supreme)! Thank you again for the information and dedication!

@vintageaudioaddict 2 года назад

The 600 is a fine amp. Your welcome and thank you for watching!

@hugobloemers4425 2 года назад

I really enjoyed this restoration. Thanks for sharing it with us.

@vintageaudioaddict 2 года назад

My pleasure! Thank you for watching!

@midmodaudio6576 2 года назад

Great, great video, thanks for taking the time to post it. As a beginner in electronics, I found your explanation of the restoration process extremely informative. I got lost in the last part of the video when you did the final adjustments, dc offset, etc.. It would be great if you could maybe do a followup video showing the exact steps and equipment used to adjust it and then bench test with basic equipment readily available on the used market such as an analog oscilloscope and signal generator.

@vintageaudioaddict 2 года назад

Thank you for the kind words and for the suggestions. If you are just starting out take a look at this video where I show how for under a $100 that you can own a oscilloscope/signal generator. - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-heAuUJR-bmQ.html

@nightwolf1966 2 года назад

WoW ! Just WoW! This was an awesome tech video , thank you some much for takingthe time to show as well as teach us about vintage auto equipment . Im looking forward to more in the future again thank you very much

@vintageaudioaddict 2 года назад

You're very welcome! Thank you so much for your kind words.

@gjb6177 2 года назад

Absolutely brilliant work here. How to + fascinating documentary. I loved it!

@vintageaudioaddict 2 года назад

Many thanks! I appreciate it.

@bugsyjonesband Год назад

I really like that whole series of Amps. I have a KA-5700 with the meters. You're right - who needs anything else. People are chasing "names". No reason for it at all. Imagine all these people chasing 800 dollar 10 wpc receivers. Thanks for making this video. Wonder if you could do a video diagnosing an amp with DC on the output.

@vintageaudioaddict Год назад

Your welcome and thank you for watching. I haven't made a video specifically on DC offset but I've covered it along with other issues in this repair guide video - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-r9WCxefytBI.html

@graemeguthrie2054 2 года назад

Great video, as always it's full of excellent advice and so detailed. I absolutely enjoyed every minute of it. I hope to find a gem just like this to have a go myself.

@vintageaudioaddict 2 года назад

Thank you so much for your kind words and for watching!

@j.t.cooper2963 Год назад

👍🏻😎 Excellent video! I will definitely be saving this one for future reference. Thanks!

@vintageaudioaddict Год назад

Glad it was helpful! Thank you for watching!

@MrDoneboy 2 года назад

It's always a good day when I see a new video, Chris...Thanks so much!

@vintageaudioaddict 2 года назад

My pleasure! Thank you again for taking your time to watch.

@Taronlusin 6 месяцев назад

Thank you for the history and restoration.

@ossianhaufe4671 Год назад

Very nice, you rescued this treasure……I want to have a maintained vintage amp from you….because you are doing it with knowledge and love about old devices 👍

@vintageaudioaddict Год назад

Thank you so much for your kind words.

@alanlefevere3678 2 года назад

Another excellent video really enjoy the long form presentation.

@vintageaudioaddict 2 года назад

Thank you very much!

@ewhibs 2 года назад

Love your videos! You must’ve been a video guy in previous life as your videos are beautifully shot n graphics are top notch. Digging all the history of these companies. Well done you!

@vintageaudioaddict 2 года назад

Thank you so much! The video side of this has turned into a hobby by itself, keeps an old man learning new stuff.

@monmixer 2 года назад

I still use an old Kenwood receiver to power my living room speakers. It sounds so good. I use two vintage Zenith speakers and of course the receiver is the amplifier. the Zenith speakers have a 10 inch low end woofer that actually hits some pretty good lo end frequencies down to 40 hz with ease at more volume that I would ever need or use in my home. It's a 4 channel amp with switching so I also have two slightly smaller satellite speakers in my dining room up high on a shelf and they also have more power than I would ever need so I can A/B the rooms or run both rooms left and right or run surround in one room if desired but not needed in my space. It's wonderful just tossing a blue ray or DVD in. Movie theatre quality for sure. You can feel the floor move when there is a steam roller in the movie and it's turned up a bit.

@vintageaudioaddict 2 года назад

Thanks for sharing. The vintage audio gear can still hold it's own against the modern audio equipment.

@chhunchhay8467 2 года назад

I too repaired my Sansui au-666. I changed some caps and replaced most transistors and works again perfectly.

@vintageaudioaddict 2 года назад

Good Job! Your Sansui is a fine piece of equipment.

@m.9243 2 года назад

Great narration, explaining each step in detail, always necessary for amateur restorers of vintage equipment. And, I fully agree, many of the vintage amplifiers out there can be as good - if not better - than most of the overpriced 'modern' offerings. The additional benefit of vintage equipment is the relative ease of servicing them, as against the minute micro-components (resistors, caps etc), used on most printed boards now that require a microscope to observe and are a real 'pain' to replace. So, thank You for a most informative and entertaining video. One hour and eighteen minutes well spent! 🙂🙂

@vintageaudioaddict 2 года назад

Your very welcome and thank you for the kind words. Very good point about the serviceability of the vintage equipment compared to the modern gear.

@Aswaguespack 2 года назад

Kenwood-Trio produced fine electronic gear and also became big in communications equipment both in commercial and Amateur Radio in addition to audio equipment. I owned a Kenwood TS-520S that was as solid as a TANK! I still have a Kenwood turntable that has been a solid performer. I like to use my smart phone to take pictures of the parts on the boards as a reference to go back to double check how things need to be put back in. I’m too ADD to trust my memory 😉😂 Excellent presentation and great teaching video!

@vintageaudioaddict 2 года назад

Thank you very much for the kind words. Kenwood did make some wonderful gear. One of my first components was a KA-3500 integrated amplifier that I purchased in the middle 70's. I still own it today.

@Aswaguespack 2 года назад

@@vintageaudioaddict unfortunately too many of the contemporary consumer electronic devices will be in a landfill within 10 years.

@borlibaer 2 года назад

Marvelous ! What a swanky nice legacy KENWOOD Amplifier. I do own the grandson KENWOOD L01-A & L01-T mint condition but in a faulty state where a KENWOOD repair service in Cologne never had been able to fix.

@vintageaudioaddict 2 года назад

Thank you. Man, you have some awesome equipment! Hopefully you can find someone to help you get your gear back into service.

@ArturArocha Год назад

I have a Kenwood KA-4002A. I changed the electrolitics and some demaged transistors. It is working well and beatifully.

@vintageaudioaddict Год назад

Good job of keeping her running!

@kenword1968 Год назад

You talk too much you say.Well not at all i love the fact that you make sure that certin parts of the video are understood by everyone.i find this video is perfect for a beginner and in no way boaring for a novist.Thankyou verry much for takeing your time to produce a perfect video for all to learn from and enjoy learning at the same time.Please keep up the great work..

@vintageaudioaddict Год назад

Not the first time I've heard that. Matter of fact first thing this morning having my coffee, lol. Thanks for watching!

@RanTausi 2 года назад

Great video, many thanks for this comprehensive video 👍

@vintageaudioaddict 2 года назад

My pleasure! Thank you for watching.

@richardsmith4803 Год назад

Outstanding video. Thank you.

@CapnMic 22 дня назад

excellent instruction .. should have watched this video first .. but still learning... tool prices have really increased on that de-solder gun by Hako .. may have to get it anyway .. and found the Kenwood history to be amazing ... that history lesson, and of course their reputation among Ham Radio operators, speaks volumes as to their importance as a major player in electronics .. much respect for presenting this information and for a great instructional video

@5argetech56 2 года назад

The KT-5000 is the Matching AM-FM Tuner for this Amplifier! Amazing find at the Thrift Store!! Nice history on the Company!

@vintageaudioaddict 2 года назад

Thanks for the info and for watching!

@fredg4460 2 года назад

I was always a kenwood fan since high school thanks for the info really learned something

@vintageaudioaddict 2 года назад

Your very welcome. Thank you for watching.

@TSUTENKAKU007 2 года назад

Thank you for uploading this presentation and your explanation is always excellent. BTW, at 19:13, I see Sony Building scene. I was there in 1975, that is the Sony presentation building located in Ginza, Tokyo. I went inside and Sony was demonstrating their best preamplifier and power amplifier that time, the Sony TAE-8450 preamplifier and TAN-8250 power amplifier hooked up to some kind of strange looking square woofer, I don't believe that was an electrostatic. It sounded very good. Sony made VFET amps, one was TAN-8550, I had that. I bought integrated version from Air Force Exchange when I was stationed at Yokota Air Base, Tokyo. Those were the great days for audio equipments.

@vintageaudioaddict 2 года назад

Your welcome. First of all thank you for your service. Thanks also for sharing your Sony knowledge and experiences. They made some great audio gear back in the day.

@g.fortin3228 18 дней назад

Catching up on a few older ones.. nice amp and nice job. Hope you will still be doing some vids :- )

@cabronesse386 2 года назад

Nicely done! It's educating and entertaining.

@vintageaudioaddict 2 года назад

Glad you enjoyed it! Thank you for watching.

@scottwhite2757 2 года назад

Excellent work, beautiful amplifier

@vintageaudioaddict 2 года назад

Thank you! Cheers!

@markleblanc3447 2 года назад

I always Loved Kenwood products, I live in the Northeast and in the Eighties we had a specialty retailer called Tweeter Etc. they only sold high end stereo equipment, Yamaha, Onkyo, clipch, Kenwood And so On, I bought many of my Car stereo systems there, all Kenwood and it Blew the doors off anything I had previously owned. Never had a stereo and Amp package that sounded that good. They were Pricey, but well worth it. I’ve been a Huge fan ever since.

@vintageaudioaddict 2 года назад

Thanks for sharing! I remember hitting my local stereo dealers back in the 70's. My Pizza Hut salary didn't go far but every now and then I brought something new home.

@jb678901 Год назад

I probably got my best deals buying vintage gear on local bidding sites, with a strong preference for physical pickup AND always in country (live in Switzerland) to limit shipment risks and costs. My favorite buys: 1) Hitachi SR-903 receiver for $140 that is in mint physical condition and works/sounds great; bought it earlier this year. A couple of incandescent lamps required replacement, but otherwise fully operational. Did some cleaning, some DEOXIT and checked the DC offsets before use (under 15 mV). I downloaded all of the service related documentation (which is both excellent and FREE) and have put together an Excel sheet to map out the planned transistor and electrolytic capacitor replacements; for next year. 2) about 2 weeks ago I found another Hitachi SR-903 that looked dirtier but was advertised in working order. Bought it for $115 on the same local budding site and from another private seller. I cleaned it up and it shines as minty as the first...had lots of dust inside compared to the first unit. Same treatments and checks were performed to full satisfaction. Runs like a champ...but with similar bulb replacement needs (just a couple). The Excel buying sheet (for all of the discreet components at risk) will be used to buy for both. I figure if I can master the first...the second will go like a breeze! We shall see. I intend to keep these babies and pass them to my kids someday. Both units came with a factory flat black painted wooden case. Condition was excellent for both...but it looks boring as hell. I decided to buy some glossy burled walnut vinyl wrap off of AliEx and carefully wrapped both cases (used a heat gun sparingly). I applied ceramic coating to the vinyl for additional protection...the results are stunning. Each case looks like a lacquered cigar box! Love the look...very premium IMHO. Why Hitachi? They are not well known versus Marantz/Pioneer/Sansui...so they do not command a huge price premium in this used market. Hitachi was a key supplier to the major brands...they knew their stuff back then and put out high quality (over spec'd) units in an attempt to build a foothold in the premium market during the receiver wars. The SR-903 produces 75 watts per channel...However, they utilize what Hitachi termed a G-class amp design with peak power up to 160Watts per channel (to avoid any clipping). More than enough power for my needs. These units look fantastic, sound terrific, and are built like tanks. Classic ALU face plate with hefty ALU knobs, levers and buttons. For me, they were an absolute steal at these prices. I have a few other brands on a rack at home, really mint vintage examples from Pioneer (LX626, SX82E c.1965), Yamaha (CR420), Nakamichi (SR-2E with Nelson Pass designed STASIS amp)...the Hitachi's occupy both the family room and the home office. They are that good, IMHO.

@reneegudjon3204 Год назад

Outstanding!. Subscribed and liked

@vintageaudioaddict Год назад

Thank you very much!

@charlesneal4603 Год назад

Best videos on RU-vid. Please continue and do more.

@vintageaudioaddict Год назад

Thank you so much!

@davidbailey6350 2 года назад

Excellent video, I notice your vintage Marantz TT, I’m still using my 6300 I bought in ‘76’… with a SX 737 I got at the same time. Thank You….

@vintageaudioaddict 2 года назад

Your welcome. Thank you for watching. It's great that you still have your Marantz turntable along with your Pioneer after all of these years.

@cjay2 2 года назад

Thank you for the history on the Kenwood company.

@vintageaudioaddict 2 года назад

You bet! Thanks for watching!

@jked7463 2 года назад

I have a KA-7000. It's a great amp. The direct couple aspect provides great fidelity. While the amp is top notch, the phono amp is good but not up to the level of the amp. Adding an after market phono pre-amp brings this amp alive.

@vintageaudioaddict 2 года назад

Thanks for sharing. Kenwood made a lot of great audio gear back in the day.

@RegiPavan 2 года назад

Very well explained, great job!

@vintageaudioaddict 2 года назад

Glad it was helpful! Thank you for watching.

@maryrafuse3851 2 года назад

Beautiful amp from back in the day. I have a couple of Sony's I enjoy. The TA F3A & TA-2650.

@vintageaudioaddict 2 года назад

Yes, she is. Sony made some killer audio gear back in the day. I have a few Sony pieces in my collection.

@gbmwaz 2 года назад

the KA-7002 & KT-7001 are a fantastic combo's. i also had the oscilloscope that matched these

@vintageaudioaddict 2 года назад

Yes, they are. Kenwood made really good audio gear back in the day.

@RUfromthe40s Год назад

i am a kenwood user since the 70´s but in Europe they ask thousands of €´s for that integrated amplifier, those 30 watts can boost 190 watts speakers and with the tone controls it delivers such a clean high´s and lows ,also the speakers at the time were huge having only 30 to 50 watts at the most but a very clean and perfect sound, the impedance selector for the turntable cartridge it´s a rare thing to see in today´s amp.´s but needed with a lot of changing cartridges fashion today

@vintageaudioaddict Год назад

Thank you for sharing.

@RUfromthe40s Год назад

@@vintageaudioaddict thank you for the great videos, when studying i changed from electronics to a Informatic degree , it was new at the time , today i can´t restore old hi-fi equipment as you do , have always to meet with an old friend who continued his studies in electronics and high-voltage systems, regards

@genehammond7239 Год назад

Love the channel Buss !!! 😎👍👍

@vintageaudioaddict Год назад

Glad you enjoy it! Thanks for watching.

@daviddoty8502 Год назад

Thank you for the great Kenwood amplifier restoration, Great job! Reguardind the WILM metal caps you used. Would you mind sharing what series of caps you use? Thank you again. Your videos are awesome.

@danhorton6182 2 года назад

I do repair and restoration equipment as well, I have a KA-7002 I need to get to. I’m sure this has already been said in the comments, but another benefit of going to film caps for the smaller electrolytic values is that in theory they should be permanent. They won’t need changed out in the future like the electrolytics would.

@vintageaudioaddict 2 года назад

That's true. Thanks a lot for sharing.

@tylerkabanuk4525 Год назад

I would just like to say I am enjoying your videos. I am looking to start a new hobby of fixing vintage equipment and this has given me the confidence to do so. Hopefully with the sudden increase in demand in vintage equipment, I can find some for a reasonable price and fix them up. A few things I did notice: - For applying thermal compound, could you use a nylon brush for applying the compound? I use them at work for applying lithium grease to moving mechanical components. -I was wondering why you decided to keep the old filter capacitors in the chassis after installing the new capacitors. -You have a couple of audio files overlaying each other, particularly around 44:56 while you are explaining something. Would you show a video where you would use an oscilloscope for diagnosing faulty components? I would like to see some troubleshooting techniques with that particular piece of equipment. This was a great in-depth, yet simple explanation of vintage audio repair with a nice list of helpful tools. I look forward to more videos. Cheers

@luismdll Год назад

Buen video gracias por la información y ayudar a arreglar estos equipos de alta calidad de sonido,un abrazo desde el Perú

@shineon7641 Год назад

Well, hello there Vintage Audio Addict. Thank You so much for your Channel and all that you put into it. You have a wonderful way with your guidance. Easily understood, (by me), Concise and thorough. That makes sharing in your Channel a complete joy for me. By the time that you were wrapping things up here, I was more knowledgeable AND more Relaxed than when I began. This is a pretty great combination so, I Thank You again. Now I know where to come for my "Schooling." I would like to ask a question, of you, before I go... I need to apologize, in advance, for my ignorance regarding a possible "Work Around" for my issue. Through a weird set of circumstances, I now find myself with multiple sets of Speakers that are all rated at 4 ohms, yet the only Receivers / Amplifiers that I have, are all rated at 8 ohms. I've had money most of my life, but no more, so I don't have a lot of choice, but to do my best with what I have. Do I understand correctly that if I were to take 2 sets of 2 speakers and wired them together in "Serial," as opposed to in "Parallel," that my Receiver would then see the Impedance as 8 ohms per channel, instead of their native 4 ohms per channel? I'm not certain that I fully comprehend the intricacies of matching ohms. For years I had been using a Denon AV/Surround Receiver, without issue... until one day, seemingly out of nowhere, my Receiver shut itself down and never to return. Not even after using the Key-Press Combination to Reset it. It behaves as though it is going through the process of Resetting itself, but never comes back to life?! So, because I have no money to spend, I am concerned that I might "Kill" whatever replacement Receiver I might choose to use. I only have 3 to select from, and as I said all of my choices, in receivers are of the 8 ohm variety. Thank you for your patience. Anything that you can do to help me will be greatly appreciated. Living Life without Music, is a bit like Living Life in Black & White, for me and I need some happiness here. (lol) I hope that you remain Well & reasonably Happy too. Keep Smiling... Cheers... 😇

@vintageaudioaddict Год назад

First of all thank you for your kind words and for watching. There is no one answer to your situation. When it comes to running multiple speakers from your equipment you have to be careful. Most speakers are not a uniform 4 or 8 ohms through the audio spectrum. At certain frequencies their impedance can be much lower or higher then rated. Some can be difficult loads for audio equipment. Receivers/amps with 4 or 8 ohm ratings are the same. There is no one specification that fits all. Some tolerate certain speakers better then others because of their current handling abilities. You have to be especially careful when you attempt to wire more then one pair of speakers to a receiver/amplifier.

@shineon7641 Год назад

@@vintageaudioaddict Wow, that was a quick response! I really didn't expect that so, Thank You. I was afraid that the answer to my question might be an elusive one. UGH! does it make any real difference as to the grade of Speakers in use? If so: I have 3 pairs. All of them are "Polk Audio. One set is "Floor Standing" and cost me about $1,000.00 each. The next pair is a "Mid-Sized" and about 22" tall and were about $600.00 each. The third pair are "Bookshelf" Speakers & I traded some equipment for them... and YES, they are all rated at 4 ohms. So, at least they're not of the Super Cheap variety. When the Floor Standing Speakers were purchased, the upper scale Stereo Addiction Dealer sold them to me with a Denon AV Surround Receiver. (Rated at 80 watts per X 5.1), but had a Stereo mode too. Well this combination lasted me for more than 10 years... until it didn't any longer. The only reason that I brought up anything other than the Large, Floor Standing Speakers, was because I had hoped that I could fool my receiver into seeing 8 ohms impedance attached to the 2 Stereo Front Speakers. Otherwise I don't expect to run anything but the large ones, unless... Oh man, I'm so sorry, I didn't intend to write you a book here. So, it looks like I don't currently have anything like a good solution to my problem then? Ha! Yet another case of "Acceptance" I suppose. ARGH! Thank you for sharing your knowledge and expertise with me. You are appreciated for this. Remain Well & Take Care, Cheers.

@JessHull 2 года назад

nice! That one looks really nice, love that silver face. I just got a Kenwood dual cassette deck model KX W892 in perfect working order and really great aesthetic condition for 12 dollars. Sounds pretty alright.

@vintageaudioaddict 2 года назад

Yes, she's a keeper. Great deal on your cassette deck for $12.

@JbVest Год назад

nice a smoke stopper for ac equipment, i first learned of these when building drones and testing them to not blow any components

@mortlach186 2 года назад

Hi, the second video of yours I've watched and I think there really thorough, even including some company history of products being restored. I notice with a lot of videos like this that resistors are rarely ever mentioned. Ben Duncan in the eighties, writing for HiFi News & Record Review wrote an article on building your own quite sophisticated preamplifier. It was a really thorough article ( a good read) and one of the things he included was frequency response curves relative to the component parts tolerances. It showed quite clearly how very tight, even better than a percent affects the response. I know that this is a budget project but maybe one place to improve resistors is the phono section, particularly the load resistors to at least a one percent metal film type; still very affordable and should give an audible improvement. In one update to a high-end preamp that used 1.0% metal film throughout the design, I installed matched Vishay to 0.01% film and foil resistors ( I think $25.00-$30.00 a pair. I know, insane) in critical places like the phono section, it capable of up to 80 dB of gain to noticeable effect. anyhow, great stuff. Makes me want to pick up some projects to repair. I even picked up A Hakko Fr-301 on Amazon. But they're not $100.00 anymore.

@vintageaudioaddict 2 года назад

Thanks for watching. Thank you also for sharing your experiences. The information helps everyone to make better decisions when repairing, restoring or updating their equipment. Your going to love that de-soldering tool!

@jamesvandamme7786 2 года назад

If it sounds good to you, it's worth it. But I can't imagine anywhere in an amplifier circuit that a 0.01% resistor would make a difference. Transistor gain is going to vary lots more than that. You could always put in trimming pots in series or parallel and "tune for minimum smoke", as the hams say.

@zukispur5493 2 года назад

Sansui AU 717. Garrard 401 turntable. 4 leak sandwich 600 speakers. Job done

@teotik8071 2 года назад

I'm glad I still own a Basic C2 and Basic M2. Bought it when it came out in the 80s because it was above average and I think still is today.

@vintageaudioaddict 2 года назад

You have some outstanding gear!

@teotik8071 2 года назад

@@vintageaudioaddict Thank you and thanks to Kenwood. I remember the audio magazines of that days... 😂

@mastertherion2920 Год назад

I have this same Kenny but the 7002 spec. Absolute sleeper of an amp. Amazing built like tank and solid internals albeit requiring recapping and transistor replacement as needed. Using this as my main pre-ampnalomgside a Kenwood KA 6004. Open , dynamic, deep fine bass tube like sound with solid state reliability that can rival or even put modern amps into shame. Only downside is that finicky and tricky Null balance set up.

@user-qm7nw7vd5s 2 года назад

AMAZING channel! 👍👍👍👍👍

@vintageaudioaddict 2 года назад

Thank you! 👍

@robertthayer5779 2 года назад

I have this amp... Worked flawlessly for 50 years. Then one side quit. So became a subwoofer amp... Maybe I DO need a de-soldering station .. love that amp.

@vintageaudioaddict 2 года назад

50 Years of service. That's pretty darn good.

@9087125498172345 2 года назад

Kenwoods are amazing. I love my KA-8006

@vintageaudioaddict 2 года назад

They sure are!

@jimcabezola3051 2 года назад

Outstanding video!

@vintageaudioaddict 2 года назад

Thank you very much!

@EsotericArctos 2 года назад

The main difference with electrolytic capacitors is longevity and if the start leaking over time. The big catch for new players is counterfeit capacitors, which are all over particular auction sites. The main thing is to buy your components from a reputable source and not from some cheap seller on one of those auction sites. I would always do like for like replacements. If the original has electrolytics, replace with electrolytics. The rest of the circuitry is designed to work with the nuances of those capacitors. Nice to see this up and running again. This old stuff is worth restoring. A lot of new equipment using name branding is not made by the original company anymore.

@rajoconnor 2 года назад

Good Job! Video is very informative. Could you send a link to that transistor replacement list? Thanks

@vintageaudioaddict 2 года назад

Thanks for watching! That list is on my network so I don't have a link to it. If you google "Troublesome transistors in vintage audio" something like it should pop up for you.

@johnnytoobad7785 Год назад

I had a Kenwood Tuner (KT-7000) and Scope (KT-6060a) from that era. I traded-in the Tuner in 1999. Recently re-capped the scope and use it as a diode tester. I always thought that was a cool looking amp. SONY and Kenwood had the best front panel designs in the 70's. (IMHO)

@hegonefishing9122 Год назад

Gave one of these to my sister in law, she loves it...

@marcoscastro7650 2 года назад

Great videos, I’m am so glad I came across your channel. Do you mind sharing your thought process for selecting electrolytic caps , I see you have selected nichicon kl caps for some areas and Elna Audio grade caps too. I am always at a cross road between audio grade and low esr and low impedance caps. Any help and guidance will be appreciated.

@vintageaudioaddict 2 года назад

Thank you for the kind words. My personal experience has been that I have never been able to tell the difference in sounds between brands/series of capacitors. I have tried about every combination of brand/series that you can think of over the years. I can't tell a difference between them. I'm not saying that other folks can't, I just can't. With being said I think that you should use a name brand like the one's that you listed. I feel from my experience that the difference in sound that I do hear from various pieces of equipment has to do more with the topology/engineering of the product.

@marcoscastro7650 2 года назад

@@vintageaudioaddict thank you

@bobstuckrath1805 Год назад

This "hobby" is so much fun!

@vintageaudioaddict Год назад

Yes, it is!

@antibrevity 2 года назад

Thanks for the excellent video. I really wish that you'd taken the amp to clipping. Why stop at 35w if it hasn't clipped yet?

@vintageaudioaddict 2 года назад

Your welcome and thank you for watching. I use to push my vintage gear a lot harder on the test bench then I do now. I'll never run it in a system very hard. She's an old girl. I'll give her a break.

@PoppinWheeliez 2 года назад

I just bought a beat up ca 1010. So far, have both channels back. Seems like bad solder joints. Going to get into it this weekend

@vintageaudioaddict 2 года назад

Nice! I think you are probably talking about a Yamaha. I have a CA-2010 in my collection. Good Stuff!

@jimmycake7143 Год назад

I rinse those small boards down with DEOXIT and sometime clean preserve with CORROSION X or ACF 50 for corrosion control/Lube.

@LuisLopez-cs3qd 2 года назад

Hey Chris, i found your channel few days ago and l just love it. Do you sale any of this equipment? My second question is, Do you repair an equipment if someone send it to you ? Thanks so much for everything you show in your channel.

@vintageaudioaddict 2 года назад

Hi Luis, thank you for your kind words. No, to both of your questions. I collect vintage audio equipment so every unit that you see is from my collection. In addition, I'm not a professional and this is just a hobby for me so I only work on my own equipment.

@robspierre3446 6 месяцев назад

I had this amp and tuner, bought used in 78 from Bob Hovland great amp. just recently recycled it.

@bernards8050 2 года назад

Nicely done. did I miss where you checked the +/- highest voltages for the power amplifier and all the low voltage values that are distributed to the various modules? And with a quick look, perhaps I must have missed the check on the DC balance of the speaker connections before you connected speakers. Many times the fingers on modules are not gold plated and need to be cleaned. On occasion, I've taken apart alternate action push switches because of intermittents.

@vintageaudioaddict 2 года назад

Thanks for watching. I'm really not sure what I showed in this particular video. I just don't remember. I usually go through them pretty thoroughly but I don't always show everything in every video. Thanks again for watching.

@johnloupis2347 Год назад

I was thinking the same thing. No checking the DC offset?

@timjohnson780 11 месяцев назад

Do you think from using the variac power source can cause prob from under powering up units.

@darrellgarlough7140 2 года назад

I like your history on the company. Would like to see you do something on superscope as they were the parent corp of marantz in the 70's

@vintageaudioaddict 2 года назад

Thanks for the suggestion.

@aceguitarmethod Год назад

Wow. Can't believe this .I have this unit along with the tuner. The 5002 Rt channel has stared to get very low. The balance doesn't help and is way off. Started looking today for help and no one knows anywhere to repair it. I'm at my wits end. Had this since 1971 and it's been great. Started looking TODAY for help and saw this. I cleaned what I could with Deoxit. Didn't help. Any advice would be greatly appreciated. Thank you.

@allanpowell7208 2 года назад

Nice gear VVA.I Just recently had a Leak Stereo 30 plus recond, new caps and anything else needed.Very full punchy sound.Do they or any other Brit amps come your way much? Thanks as always for the entertaining and informative watch.Cheers

@vintageaudioaddict 2 года назад

Thanks so much for watching. I've never owned much in the way of British gear. I just haven't seen it much here in the USA but I'd love to get my hands on some the older British gear. I do own a pair of older Celestion speakers and also a pair of KEF's so I'm not totally out of the British loop. Oh, I do own some NAD equipment also. Cheers from the USA.

@allanpowell7208 2 года назад

@@vintageaudioaddict I got Radford, Quad,Leak,Nad amplification and a very patient wife Cheers

@juanstor1 2 года назад

I've watched many of your videos and enjoyed them greatly. I'm getting ready to work on a Kenwood KA-3500 that I acquired from someone. I've searched online for a troublesome transistor list like the one you showed and have not been able to find one. Do you have any hints or a site where I might find one?

@vintageaudioaddict 2 года назад

Thank You! I just googled "troublesome transistor list" and the list I showed in the video came up for me, right at the top. Not sure why it doesn't show up for you.

@bobbysparky4299 2 года назад

It doesn't show for me either, I used Google, FYI.

@bobbysparky4299 2 года назад

@@vintageaudioaddict If you have a link, it would be a great help! Thanks! Bobcat

@danhorton6182 2 года назад

I really like your Sound Technology 3200A, seems like it has a smaller footprint than your usual unit. Unfortunately they don’t seem to come up for sale often, do you have any recommendations as to a unit that will perform the same functions and is considered a quality unit?

@vintageaudioaddict 2 года назад

Sound Technology was state of the art for audio analyzers/test gear until a company called Audio Precision came along in the 80's. You can find used Audio Precision gear more often then Sound Technology as they are still in business. The only issue is that the old/vintage AP test equipment still brings pretty good money even today.

@tubeDude48 2 года назад

At 49:55, That's the route I would take, unless I want to go all out and purchase CAPs that are costume made. Yes there available!! Those bars, are called: binding posts!!

@vintageaudioaddict 2 года назад

Thank you for the information.

@johnloupis2347 Год назад

I have a 70's Technics SA-400 with DC offset at 56ma and 65ma but no adjustments. What should I look at first?

@janchristensen9858 Год назад

Where can I also find this transistor note list with replacement and known problems?

@mr2981 2 года назад

Do a Nakamichi TA series receiver, with the Nelson Pass STASIS amp section!

@vintageaudioaddict 2 года назад

The only Nelson Pass amps that I have are one's he did when working with Adcom. The 5802 I have is one great amp.

@silviopimentel7247 2 года назад

Awesome 👌

@vintageaudioaddict 2 года назад

Thank you! Cheers!

@justincase3880 2 года назад

Hi, About the stand-off terminal bars/strips .. what are they called? .. I couldn’t find any…

@johnb5519 2 года назад

Great video. I have an old Sansui 661 that I bought in 1973. The FM tuner dial shows the stations about 10 numbers low, like 107, coming in at 104 on the dial. What would be the cause.Everything else seems to work fine.

@vintageaudioaddict 2 года назад

Thanks. With your tuner if could something as easy as the tuning string has started to slip some. Bee's wax works well on the tuner string if that's the case. Of coarse it could be more then that but that's something you may be able to look at.

@johnb5519 2 года назад

@@vintageaudioaddict Thank you for the reply. Yes, I think it's something more, because down at the lower end of the dial the distance of the discrepancy is less.

@repairfreak 2 года назад

Thank you for your video sir, I have been in and out “self taught for the most part” of consumer elect. repair for last 35 year out of my house. It’s been a fun learning experience with many battles won and grey hair now to show for them at 55 years of age. Your troublesome transistor data-sheet looks like a very helpful additional piece of data to have access to. Is there a chance you could share your source for this Troublesome Transistor information with suggested modern cross referenced replacements listed beside. I would love to have a THD Tester, all I can do is measure my 1kHz sine-wave on my scope “with dummy load” and look for any clipping or other abnormalities, as well as use my biological aural detectors :^) Thanks again for your video, nice restoration! Time to get back to the Pioneer SX1000TW repair very soon. Sincerely, Mike

@vintageaudioaddict 2 года назад

Hi Mike, Your welcome and thank you for watching. Link this link for the "Trouble Transistor" List. - drive.google.com/file/d/1InWTOz8Y-H4zyDXva5yvUXuMExEbsR7J/view?usp=sharing

@repairfreak 2 года назад

@@vintageaudioaddict Your welcome and thank you for the link. I’m alway looking for as much information as possible when it comes to semiconductors. You are spot on when you mention the special temp sensing diodes used for output transistor thermal biasing. These are most always impossible if not impossible to find replacements for. Something interesting I learned awhile ago was about non electrolytic type capacitors that are being used to couple audio signals. I see a lot of these high voltage type caps esp in tube guitar amps. These typically non-polar type caps actually have a band that is supposed to denote the outer foil of the cap. If installed in reverse direction the caps can pick up noise from the outer foil like an antenna. Mr Carlson’s Lab on RU-vid has some interesting info on this and how to find the foil attached lead end of the cap if cap mislabeled or unlabeled. Frequently the caps get flipped around in production and get band printed on wrong end. Take care, best of wishes with health, and success with your repairs my friend.

@jamesvandamme7786 2 года назад

It should be possible to measure distortion with a spectrum analysis tool, which would also tell you what the distortion products are and identify them. I wonder how good you could do with a PC sound card and FOSS software, which would be basically free. I suspect somebody has already tried this. Hmmm. I have a microwave spectrum analyzer which doesn't go that low. And cheap scopes which don't do the math. Biological detectors suffice for the most part. If it sounds good, it's good enough.

@bchdsailor 2 года назад

Just bought a KA-5002 in Denmark, approx 1600,- NOK Happy customer I've got approx 120 Trio-Kenwwod units in my collection

@vintageaudioaddict 2 года назад

Very nice! Thank you for sharing.

@pilgrim131972 Год назад

Mines recently had a ticking sound, goin thru the speaker, somewhat relay sound that keeps on clicking, i wonder what could it be

@bisarowood 5 месяцев назад

which one of the Kenwood are worth restoring ? and the ones to avoid

@kevinjekyll1521 2 года назад

Guess what, a KA-4000 will cost you $450 NZ in New Zealand, it is very rare find aything worth anything that is a genuine bargain. I can only look on with awe as you buy and restore some gems into something some one can value again. I look forward to more reveals of equipment you have acquired, but can only watch as I know I can not do it here, well not on my pay grade. Love your content, always an education, and a dry sense of humour always goes a long way...

@vintageaudioaddict 2 года назад

Kevin, greeting from the USA. Thank you so much for your kind words. A few years ago here in the states this type of equipment was being put out to the curb. Now for the most part bargains are hard to find here also.