McIntosh MC 2205 Power Amplifier - Audio Repair Restoration Testing. MAC Classic Old Vintage Stereo

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McIntosh MC 2205 Stereo Power Amplifier repair and restoration video. This classic vintage MAC 2205 is in need of some work so that it can provide decades more of service reliably. The 40-45 year old electrolytic capacitors must be replaced. In addition, an issue with the power meter's was solved. This McIntosh amplifier weighs about 85 pounds and it feels like it. Built like a tank this McIntosh MC2205 power amplifier will be in service for many more decades to come.
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6 окт 2024

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Комментарии : 110

@John51808 4 года назад

I have been purchasing McIntosh stereo equipment for over the last 20 years. I could never afford to buy new so I would buy all my equipment from a used retailer out of New York. During that time I always had the same salesman whose name was Frank Gow. One day a few years back I called and they told me that he had passed away. They also told me that his dad Frank Gow senior was the chief engineer at McIntosh. McIntosh is A family company whose main goal is to produce the finest products they possibly can. Frank Junior never let on the relationship he held with that company and so I was again truly impressed at The quality, integrity and focus of everyone involved in that company.

@vintageaudioaddict 4 года назад

Thank you so much for sharing that story. I really enjoy music and the equipment that makes that possible but I also think the human stories behind the equipment are important. Thank you again.

@justsumguy2u 4 года назад

Oh, man. This is the holy grail....this isn't some mass-market Pioneer or Sansui, this is as serious as audio gets. McIntosh held open houses, where they dared anyone to bring an any amplifer that would beat their specs--their opponents always lost. Great job of keeping this classic running for many more glorious years to come

@vintageaudioaddict 4 года назад

Thank you very much. She is a beast.

@hjalmarfossi5728 2 месяца назад

MC2255 has entered the chat.

@vettemaniac2237 Год назад

That 2205 is a testament to McIntosh glory. I love my McIntosh ... It was the Holy Grail dream when I was a kid. Now thankfully a reality.

@vintageaudioaddict Год назад

McIntosh is a survivor. I'm glad they have been able to stay in business all these years. So many other audio companies haven't.

@Joker-ig8im 4 года назад

No joke. Last night I just picked up a MC 2205 Amplifier, MC C28 Preamplifier, MC MR74 AM/FM Tuner and a Technics SL-10 linear Turntable at a yard sale for...……………..are you ready...............$40! They are in pretty rough shape. I think the amp and turntable are definitely salvagable. The preamp is really rough and the AM/FM tuner looks shot but it might be valuable enough to fimd new glass for the front to try to save it. Can't wait to dive in to this project.

@tonyburkhalter5641 2 года назад

Curious on the out come of your Mac purchases? Awesome find from a yard sale. Looking for another 2205 for parts.

@victoryfirst2878 4 года назад

Thank you for showing us all on RU-vid how to do a perfect job of repair and restoration on this beast.

@vintageaudioaddict 4 года назад

Your welcome and thank you so much for your kind words.

@pgmurrin 4 года назад

Your voice is so easy to listen to. You’d make a great teacher.

@vintageaudioaddict 4 года назад

Wow, thank you!

@flytown9853 4 года назад

I'm a Pioneer lover, I just love the beautiful design of its stereo systems, every stereo component I have is a Pioneer since the early 70's and will probably always be since I could never afford the McIntosh. I greatly admire your passion and skill in restoration of all models of the older stereo equipment.

@gregorytrane7828 4 года назад

I've listen to many high end amps past and present in the 51 years that I've owned audio gear and the Mac amps always leave me with a satisfied listening experience everytime I turn them on. I own several of them and they always seem to pair well and sound the best with my B&W speakers. Good review.

@AudioElectronicsChicago 4 года назад

Thats a vintage beauty!

@vintageaudioaddict 4 года назад

You can like MAC or not but it's hard to argue about the look.

@70smarantz61 4 года назад

Piece after piece after piece. Totl stuff! I love your videos! My friend grabbed a C24 matching preamp for 300 dollars to fit with this power amp. Stunning pieces.

@vintageaudioaddict 4 года назад

As always, thank you so much! Man, a C24 for $300. Great Deal!

@bixy9347 4 года назад

Such a great looking amplifier, beautiful combination of materials.

@vintageaudioaddict 4 года назад

Couldn't agree more!

@davidcross701 4 года назад

I had wish to have known about these restorations and fixes of audio equimpent, Cassette and amps, two years ago. An apartment tenant that lived in our apartment complex died. I was outside on my balcony and the daughter yelled if I wanted anything from the apartment. Well I've been wanting to get some cable wire, extension cord or table laps, I went over and right away, it was just a one bedroom apartment, I saw these "ancient" stereo receivers! Now that I know the eras of them, they were mostly seventies. Silver with needles, just turn on but no sound?! I took three of them but had no Idea how to fix them... YOU all are going to hate me and the family of the poor man. We through them all away into the garbage!!!! After watching all these channels on how to fix them... I felt like throwing up, really. Great equipment like new. The man had kept them all his life :( RIP.....

@stevengebhard2535 4 года назад

Good video. Have an old MC2205 that needs repair, so this video will be extremely helpful. Very clear and well explained. Thanks

@5argetech56 4 года назад

Analog Vu meters are so much more elegant then LED power meter displays. As depicted in my avatar.❤❤

@vintageaudioaddict 4 года назад

Yes, true

@dirtydon8661 4 года назад

188 likes with no dislikes! Just goes to show the quality of you videos and the people who come to watch your videos.

@vintageaudioaddict 4 года назад

Thank you so much!

@hjalmarfossi5728 2 месяца назад

Definitely gonna be a fun one

@stevefoster2700 7 месяцев назад

Thanks for this. I’m about to open up my 2255. It drops about 5dB on the right side from about 10kHz and down. Hoping it’s just a cap but will do a full service while it’s open. I’ve done a few recaps but a bit nervous working on “my baby”.

@dwoodog 4 года назад

very nice equipment. It's fun deciding which units to play, and shuffling equipment around.

@vintageaudioaddict 4 года назад

Agreed!

@edgarGonzalez-xl1zs Год назад

Thankyuo for your information about McIntosch MC 2205

@StephenSpivack 3 года назад

Just got one of these today. Looks very nice to work on. Thanks for the video. Cheers

@BoudewijnvanHouten 3 года назад

Managed by just looking at the relaycover in the video so I could see where you inserted the screwdriver noting the black marks. From the top between the cover and the relaycasing and the gently move the screwdriver outwards to lift it out without breaking the small piece of plastic holding it. I've rewired the unit for 240 Volts and now I have todo the rest of the things you adviced. Also need a new speaker on/off switch partno. B500K because it feels it broken and there is a black wire between the solderingpoles with the blue wires, I think to just get it out of circuit so the speakers are always on. Removed the glass frontplate which is a must as you pointed out the keep it in good shape which is very easy also. Miss some black screws which are used lavishly to on the bottom and sides for are the covering panels. My unit looks pristine, really as new, so it is worth a while. Unit sounds great but there are some issues. The mono/stereo switch doesn't seem to work but the unit is together with the Powerguard on/of switch situated at the back attached with small rivets so you can't detach it for inspection and/or cleaning. The action of the Right and Left rotary levelpots in the front is erratic. With one pot I can adjust almost both channels simultaneously and with the other just when it is almost fully CW it brings up a last bit of level. The connections of the Right and Left RCA connectors at the back doesn't change anything for the kind of intermittent operation described above. Metering is strange too. When in 'Watts' mode the left meter stays doesn't barely move, no further than the .02 Watts mark although the level is the same as in the rightchannel. In 'dB' mode at comes up also but both meters react up to the 10dB mark not in sync with the level of input. Only when playing loud the behave in sync. The amp remains pretty cold idling and playing for an hour but maybe that is the McIntosh cool operation with just a small amount of bias with only a 50 Watts AC intake with all the bulbs glowing meaning almost no Class A portion at all. Maybe it is possible to raise that a bit although those old one turn trimmers do not allow any fine-tuning mostly. Another thing are the electrolytic input caps according to the service-manual 1 uF, 63 Volts, but I see only two 2.2 uF 50 Volts lytics on that awkward placed PCB which seems to me impossible to get out without removing the adjacent output fan-assembl. Did you put those KT Audio caps there maybe to replace those inputcaps with better ones? Well I hope it is gonna be a funproject for me and hopefully I can restore it's operation as originally intended. Nice touch to credit the engineer Ron Evans for this amp and its novelty the PowerGuard system. Thanks for this great video. much appreciated and maybe you can respond to some of my remarks.

@relyt559 4 года назад

Awesome video. I just bought new mcintosh amplifier and preamplifier

@vintageaudioaddict 4 года назад

Nice! Thanks for watching and enjoy your new gear!

@wm2357 4 года назад

Love your passion and amazing work 👏

@vintageaudioaddict 4 года назад

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

@Tracks777 4 года назад

amazing stuff

@vintageaudioaddict 4 года назад

Thanks

@danashay 3 года назад

Woof. Another awesome video. Fun to watch. Reminded me I have a Pioneer ctf1000 deck. Loved it since new. Thanks for the vid!

@vintageaudioaddict 3 года назад

Glad you enjoyed it and thank you for watching!

@ljm9359 4 года назад

This MC 2205 is a gem with Klipsch speakers !!

@vintageaudioaddict 4 года назад

A classic combo!

@ljm9359 4 года назад

@@vintageaudioaddict Yes a classic combo ! I have the same. I used it with Klipsch KLF, Chorus, Cornwall and now Epic CF4 and always with great results.

@marclemieux599 3 года назад

I just purchased a pair of Klipsch Cornwall IV’s, hooked up to my vintage McKintosh MC2205 Amp and C32 Preamp. The sound is amazing. It a great match.

@josephsiciliano3681 3 года назад

Great amp. one of mac's best.

@vintageaudioaddict 3 года назад

It sure is!

@breakerbroke23 4 года назад

New subscriber, I really like these videos. Cheers

@vintageaudioaddict 4 года назад

Awesome, thank you!

@gsmd770 4 года назад

That's a nice old Mc!

@vintageaudioaddict 4 года назад

Yes, she is.

@rectify2003 4 года назад

I love the story about Ron, the designer.

@vintageaudioaddict 4 года назад

Thanks! Imagine working almost 50 years at McIntosh. When these folks are gone their stories will be lost and I think it's important to carry them on. The human stories behind the equipment I feel is important.

@rectify2003 4 года назад

Vintage Audio Addict Back then there was employee employer loyalty. Thats 1 reason I came out of the service trade. Everything is questioned on a repair.

@Doiche 4 года назад

New suscriber from argentina. Great job ! Greetings

@vintageaudioaddict 4 года назад

Greetings from the USA. Thanks and welcome!

@Leeollee 4 года назад

Very Nice😍

@vintageaudioaddict 4 года назад

Many many thanks.

@chrisk4617 3 года назад

Great video ! I might be purchasing this amp off a friend soon for $2000 Canadian and was wondering how much all this service you did would cost at a audio repair shop approximately ?thanks

@HighPoint_Aud_Elec 4 года назад

Beautiful piece Chris,, hope to get that same exact piece sometime. Sent you a email from the site, but bounced back mailbox is full! ! Keep up the good work!

@vintageaudioaddict 4 года назад

Thank you so much! I'm sorry about the email. I unload it then it fills up again.

@HighPoint_Aud_Elec 4 года назад

Vintage Audio Addict No problem, sure looks like you’re in the sunshine state with the good weather there

@radrob91342 2 года назад

I have one for sale along with other high end audio gear and 190 albums

@richardadelberg8961 Год назад

I’m having a fit getting faceplate bk on . Bottom rail keeps cocking at angle. Don’t know if rail goes over or under bottom cover? Then side rails and extruded pieces. Jigsaw puzzel

@henrytran1815 Год назад

Hi, please help to replace output mode light. Thank you

@moodyga40 4 года назад

i own a mcintosh c26 preamp my favorit is the mc30 and the mc60

@vintageaudioaddict 4 года назад

Nice! So much history with the McIntosh name.

@antoniogreco5444 4 года назад

great job ... I have a 2205 and I can not find the components for the two bases 044-626 power output pc board, over time they have been tampered with and I do not trust those mounted. can you show me the list? thank you for your time

@RickMahoney2013 4 года назад

They started in Maryland. later moved to NY.

@aussie8114 4 года назад

Awesome 👍🏼 Silly question, do capacitors deteriorate from age or from use?

@vintageaudioaddict 4 года назад

Thanks! It's a combination. This video will tell you what the manufacturers say. - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RaWrYJ6amcA.html

@5argetech56 4 года назад

From age and use the heat and cool cycle dries out the electrolytic liquid inside

@aussie8114 4 года назад

Vintage Audio Addict Thank you 👍🏼

@chefbink61 4 года назад

The easy answer is both. ANY vintage electronics should always be powered on slowly and with a dim bulb to be safe. Capacitors can be replaced but transformers and other components are next to impossible to replace.

@waxytime1 4 года назад

Hi, Great video! Do you happen to have a video where you show the glass from of the 2205 being removed and replaced? I have a friends here that he took apart because the glass was shattered,, ordered a new glass panel and I'm trying to get it back together for him and I am afraid that if its not done correctly the glass will get damaged again. Thank you!

@woolsthorpelab.5312 4 года назад

I have a MR78 and the strereo light did not rune. I removed the glass front face. On the MR78 chassis there is two white boxes with for each 3 subframes. The first subframe - stereo indicator light - of the first white box does not light . The two others lights. This is the same for the second white boxes. The first does not light but the 2 others yes.

@jimhough6233 4 года назад

Just subscribed by the way!

@vintageaudioaddict 4 года назад

Thank You! Welcome to the channel.

@scootter1956 4 года назад

you can spot a Mac a mile away w/ those wonderful big blue meters. only problem, no one could afford one as a young audiophile. only saw them in stacks at big rock concerts ( Who) can you tell us how much that unit sold for new???

@vintageaudioaddict 4 года назад

Yes, that McIntosh look. You know it in a second. The MC 2205 retailed for $1649. Not a small amount in the middle 70's or even now for that matter.

@scootter1956 4 года назад

@@vintageaudioaddict thank you, great work on it as usual! i was looking at separates when i bought in 1980 but for that price for the Amp. only, i got my pioneer 1980. list$ 1,600. for 1,000.$ and the specs matched anything else w/ the .003 THD at one watt continuous which you know is plenty loud in a living rm, let alone the .03 THD at Max. output at 270W! thank you again, love seeing all the work you do. what do you do w/ all the equipment you fix? you must sell a lot as you can only listen to one at a time :) what do you have set up as your ultimate home system? w/ so much to chose from?

@iampuzzleman282 Год назад

How hard is it to repair an amplifier vu meter on a mc901? One of the dual vu arms is frozen at a certain point and only goes higher but doesn't go back all the way down. It's sticky at a certain point along the fluctuating range.

@OllieProphet 3 года назад

Nice video. Big TU! Question : I'm about to do my MC 2200, so you have a part number for the speaker relay you could share? Thanks in advance!

@richardmarshall6751 3 года назад

Great video, thank you. The back story with engineer Ron is very cool. I have an MC-2200, brethren to the 2205, but sans meters, that needs refurbishment. Could you please provide a part # / source for the large PS caps?

@vintageaudioaddict 3 года назад

Your welcome and thank you for watching. mouser.com or digikey.com will usually have a wide variety of power supply filter capacitors. You start with the diameter and length of the capacitor and go from there. Then look for the capacitance and voltage requirements. Usually you can find what you need.

@vegaslimoguy2376 4 года назад

Have you ever worked on any Adcom equipment? I own a huge collection of Adcom equipment, problems with the caps back in the 90s but all of my equipment is rock solid and the amplifiers designed by Nelson Pass have a warm tubelike sound. Also, great job!

@vintageaudioaddict 4 года назад

Thank you very much for your kind words. Yes, I've worked on Adcom equipment and I have several pieces in my collection. I have always liked Adcom equipment and I thought it always brought a lot of value at every price point. I purchased a 555 in the middle 80's and I really enjoyed it. Really good stuff!

@Mikey-np1gg 2 года назад

I have the same amp and I love it. I bought it 5 years ago from a place that refurbished it. Soon after the meters stopped working. They have gone out of business and I wish I could get those meters working again. I know its a common problem but cleaning the meter contacts with detox and pulling out the two boards and replacing doesn’t help. Would you be able to point out the likely part or parts that it could be considering both meters quit at the same time? Thanks

@vintageaudioaddict 2 года назад

It's almost always to do with that ribbon cable. If it's something else I just wouldn't know what it might be. It's been sometime sense I was in my 2205.

@rendroidz4680 4 года назад

Saw someone selling this exact model for $900. Not sure if thats a fair price or not. But how much you think it will cost to restore and repair it from authorized mcintosh service center?

@vintageaudioaddict 4 года назад

I'm not sure as I don't do this as a profession, I'm just a hobbyist. I'd shoot off an email to a McIntosh service center and I'm sure they could give you a ballpark figure.

@marclemieux599 3 года назад

That is a very good price. I just bought the same amp, the one I bought is in mint condition cosmetically and I paid $3000 for it. I am having the internals rebuilt and will probably cost another $1000. I have seen good to mint condition MC 2205’s selling for 4-5K. What this amp sold for back in the 70’s would be equivalent to spending 12K in today’s dollars.

@jimhough6233 4 года назад

Been watching you for awhile and loving your channel. Seems like your gear never has bad output transistors?! What gives?

@vintageaudioaddict 4 года назад

I've had a few when I obtained a piece of equipment but I've not had one fail on me, yet. LOL Output transistors failing or any transistor for that matter many times is caused by another issue in the unit. 30, 40, or 50 year old electrolytic capacitors is the main cause of failure in vintage electronics in general. When they fail other components can be damaged also. I don't use my units regularly until I have restored them.

@BoudewijnvanHouten 3 года назад

I've disconnected the AMF Potter & Brumfield12D56 loudspeaker-relay, but I can't manage to pry of the plastic cover without breaking it it seems. Tried with a small and big flat-bladed screwdriver, but no luck yet. Want to keep it intact for reusing it. Any suggestions?

@dugaldhutchings404 4 года назад

Another beautiful piece. Any idea what type of wood the case is made from ?

@vintageaudioaddict 4 года назад

Thanks as always. I think the case is walnut veneer.

@josefk5659 3 года назад

Cool video. I'm trying to understand hi-fi gear. How many speakers can this power? Could it power 4 JBL L-100s?

@vintageaudioaddict 3 года назад

Thanks! Well you can connect four speakers to the outputs but you must know the impedance of each speaker so you know which 2205 impedance tap to use.

@josefk5659 3 года назад

@@vintageaudioaddict thanks. I’m doing some more research. I’m starting to understand. It’s a bit more complicated than a guitar and amp. God help me.