Slow Rebirth | '58 Fender 5F6A Bassman Pt 3

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Good things take time, they say. If that's the case, this amp will be incredible when I'm done.
Seriously, these things take a lot longer to do right than a video can really convey.
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These are things I get asked about a lot :
Amp Tech Gear Used :
Hakko FX-951 soldering station
Weller SPG 80L soldering iron (chassis work)
Rigol DS1054Z digital oscilloscope
Thsinde 18B+ digital multimeters
Kester 60/40 solder
Techspray #4 No-Clean Desoldering Braid
Below are things that make this channel possible that people don’t usually think about. If any of these companies want to send me new and wonderful toys, I’m open to that. I can’t take free stuff when it comes to the amps I review, etc, but for the stuff below, bribe away!
Microphones/Audio Equipment :
Guitar Amps : Royer R-10 Hot Rod and/or Shure SM57 (noted in videos)
Voiceover Bench : sE Audio sE8 (small diaphragm condenser)
Voiceover Streaming : Shure SM57 with shockmount and windscreen
Voiceover Mic Arms : Elgato Wave Mic arms
Guitar Mic Stand : Gator Frameworks short weighted base stand with boom
Mic Cables and Guitar Cables : Mogami/Neutrik
Mic pre : MOTU M2
DAW : Logic Pro II on MacBook Pro 16 running Sonoma 14.5
Plugins : No effects other than level matching/normalization unless a recording
specifically has reverb etc added in post (rare, various Waves plugins)
Monitors : Yamaha HS7s
Monitor Stands : Gator Frameworks Desktop Clamp-On Stands
Monitor Isolation Mounts : IsoAcoustics Iso-Puck Minis
Headphones : Beyerdynamic DT 770 Pro (main)
Headphones : Sony MDR-7506 (alternate)
Video Equipment :
Camera : Sony ZVE-10 with SmallRig Cage (main)
Lens : Sigma f2.8 18-50mm (main)
Lens : Sony ZVE10 kit lens (rarely used)
B Camera : Apple iPhone 13 Pro (rarely used)
Tripod : SmallRig 71” with SmallRig Fluid Video Head
Streaming Mount : Elgato Master Mount S with SmallRig Ballhead
Bench Light : SmallRig RC 120D
Bench Light Diffusor : SmallRig Lantern Softbox
Bench C-Stands (light and overhead camera) : Neewer Pro SS Heavy Duty
Streaming Light : SmallRig RC 120B
Streaming Diffusor : SmallRig Parabolic Softbox
Streaming Light Mount : SmallRig 148CM Wall Mount Boom with Triangle Base
Various Other Lights : Neewer LED Panels with Neewer Softboxes
Video Software :
Davinci Resolve 19
Phantom LUTs
Paul Leeming LUTs
Adobe Illustrator 28
Adobe Photoshop 25
Ecamm Live (streaming software)

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Опубликовано:

23 июл 2024

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Комментарии : 100

@soapboxearth2 23 дня назад

The bass pot is a 1964 cts, I'm watching on a 65-inch tv ,lol God, i would L❤VE to be able to restore an old 5f6a or JTM. Good lord, you have my envy, Lyle !!

@nonemlinus 23 дня назад

I also love it when an elegant result falls out of implementing simple rules consistently. It can evoke a strong sense of beauty in art and science…there is little difference, really.

@remurdereht 23 дня назад

Rotten Cotton is going to be the name of my next music group 😄

@jimsalman7257 22 дня назад

It could also be the nickname for someone who works in Congress.

@goodun2974 23 дня назад

Have no fear that when Lyle says he is going to "tape off" the unused heater-winding centertap, he means cover and insulate it with heatshrink tubing, not tape! 😉

@joeltunnah 23 дня назад

Fender would have used masking tape and called it a day.

@goodun2974 23 дня назад

@@joeltunnah , yup, I've seen that myself in a few old Fenders. Leo did a lot of things right but he was also a bit of a cheapskate businesswise and always looking to cut costs and labor time. Anyway, old fashioned masking tape has a tendency to dry up and glue itself in place, but electrical tape turns into a gummy gooey miss and unwraps itself when it gets warm. Neither are good electrical insulators.

@edwardebel1847 22 дня назад

Masking tape? Hell, scotch tape! It was good enough in grade school...

@joedoe3235 23 дня назад

You're the only tech who's opinion I wanted to hear about the new Gibson amps,especially the 5watt version.

@PsionicAudio 23 дня назад

I haven’t had one. But they look like a very bad joke. With very deceptive marketing (hand wired my ass).

@joedoe3235 23 дня назад

@@PsionicAudio Well you could make an informative video about them from gut shots,no? Or would you rather judge one in person?

@PsionicAudio 23 дня назад

The Mesa fanbois would ridicule me if I did a video without having one on the bench. Not that they understand the things I’ve said when I have had Mesas on the bench. And it’s unlikely I’ll be taking any more Mesas in. I’d rather focus on good amps from companies that don’t bend their customers over.

@jimsalman7257 22 дня назад

When you do the job properly, you effectively reap double rewards: Beauty... and Reliability!

@grandudetonesnob7107 23 дня назад

That impeccably cleaned chassis would be a lovely surface for warming tiny sandwiches.😉

@lewisgeyer1440 23 дня назад

Why not? It had already been used for warming insects.

@goodun2974 23 дня назад

@@lewisgeyer1440 , great for a free protein snack!

@evanharmon7928 23 дня назад

It makes me happy to see such attention to detail.

@FuriousMess 23 дня назад

This series is a real treat! Thoroughly enjoyable and it's looking like a picture perfect example.

@patriottothecore6215 23 дня назад

A fantastic restoration from a real pro. Thanks.

@ubmastering 23 дня назад

This episode is perfect. By that I mean the flow and content are perfectly balanced. This leaves a good taste and the want for more.

@fiddlix 23 дня назад

Absolutely stunning work Lyle, to tell the truth, I wouldn’t have expected anything less judging by your previous work you have posted. Cheers 🍻.

@jhjanko1 23 дня назад

Beautifully presented. Beautifully executed. As I progress in this hobby, I have learned that this level of quality requires only a slight increase in effort. Very satisfying.

@IL2TXGunslinger 23 дня назад

Incredible series! Great to see so many people here. Video quality is superb

@richardlynch5632 23 дня назад

BEE-YOU-TEE-FULL😃👍👍

@martinreid1740 23 дня назад

Fantastic detailed work that makes me happy, can't wait to see more.

@maxvockner 21 день назад

Giving us something all to strive for ! ❤

@jerryking2418 23 дня назад

Very nice work.

@merlesson1164 22 дня назад

Excellent as always. Thanks.

@dewey7330 23 дня назад

Well done sir. Looks great!

@DavidEllis-rw1of 22 дня назад

Beautiful work!

@roberthastings708 23 дня назад

This does make me happy to see. Thank you.

@joemcgraw5529 23 дня назад

Beautiful work Lyle

@td7426 23 дня назад

Bravo! You are an artist in the truest sense.

@sgt.grinch3299 23 дня назад

Thank you for sharing Sir.

@rustymohican8280 22 дня назад

So beautiful! I am happy : )

@alasdairmunro1953 20 дней назад

Thats going to look amazing when done! Love it.

@diegorhoenisch62 23 дня назад

Absolutely beautiful work. Cheers, Alan Tomlinson

@DogatHeart 23 дня назад

Stunning !!

@matthewf1979 23 дня назад

Looks exactly like one of my builds! Good to hear you’re using something other than the selenium rectifier as a terminal for the bias diode. I don’t know how, but I’ve seen them burnt up while not under any load. Maybe an internal short to the mounting hardware or something.

@PsionicAudio 23 дня назад

Yeah, I don’t trust them.

@goodun2974 23 дня назад

@@PsionicAudio, there's no electronics "get the funk out" operation that can compare to when a selenium rectifier burns up and vents it's stinky, toxic, rotten egg-adjacent fumes. The very first electronics repair I remember was replacing a filter cap and selenium rectifier in my dad's workshop radio when I was about 11. I don't even remember how I came to know what to do in order to fix it.

@victorbeebe8372 23 дня назад

Mahalo Lyle! Yes, I agree. Nice and orderly.

@TheStephensjoshua 23 дня назад

Impressive

@TwangThang57 23 дня назад

Purdy wurk!

@YeatzeeGuitar 22 дня назад

Pure zen

@colbyjack7074 23 дня назад

The difference between when that amp first came in and where it is at now is extremely stark and amazing!

@briansilcox5720 23 дня назад

Excellent choices and rationale for your handling of this restoration. Hope to see some description of impedance match logic of 4 speakers.

@PsionicAudio 23 дня назад

Thanks. Not much to say on that. There are four 8 ohm speakers in parallel making a 2 ohm load.

@goodun2974 23 дня назад

@@PsionicAudio , did Leo have those transformers custom-made for a 2 ohm load?

@PsionicAudio 22 дня назад

I doubt it. Probably in the Triad catalog then in the Schumacher. But it’s possible he asked them to make 2 ohm versions of existing models. It would been so much more convenient for the rest of us if he’d used 16 ohm speakers for a 4 ohm load.

@goodun2974 22 дня назад

@@PsionicAudio It appears that Leo wanted to avoid series-parallel combinations in his 4x speaker cabinets, probably to avoid warranty repairs caused by having one blown speaker also disconnect another series-wired speaker from the system, and now you've got only two speakers left to handle full gig volume, leading to more blown speakers and possibly a blown output transformer...... Of course, it's easy enough to wire 4 speakers in series parallel in such a manner that when one speaker dies it doesn't automatically take a second speaker out of the circuit, but the fact that the Bassman has 4 separate output jacks seems to indicate he was worried about that type of scenario; Or perhaps it was a fail-safe for a speaker rattling at the gig and the musician could simply unplug The Wire to that 1 speaker that was causing a problem or perhaps it was a "show must go on" fail-safe for a bad speaker buzzing or rattling loudly at the gig, and the musician could simply unplug the wire to that one speaker that was causing a problem. I have some old Triad catalogues and I should look to see if they made transformers with 2 ohm secondary. I don't think I have any Schumacher catalogs......

@jimbeaux4988 21 день назад

I Luuuuvvv the domino!

@user-ok2ju4lw4u 23 дня назад

Wow!

@jutukka 23 дня назад

In my own amps I use preamp tube shields only in case of first stage or reverb recovery tubes, and often they don't need tube shields either. Grids of triodes are very much inside the structure of the tube and "shielded" by plate. Tube shield springs cause unwanted mechanical stress to glass envelope of tubes if there is no cushion (silicone or felt (like in case of Telefunken tape recorder EF86 tube)) between shield spring and tube.

@PsionicAudio 23 дня назад

They. Are. Removable.

@jutukka 23 дня назад

@@PsionicAudio Thank God they are. 🤓

@diegorhoenisch62 23 дня назад

I suspect that @jutukka(based on their name) is a Finn and has learned to utilize the traditional Finnish form of verbal and written communication which is utterly devoid of diplomacy, courtesy, and kindness. Please understand that they may actually be a warm human being. I've run into a few Finns in my life, and I find this particular quality to be challenging. On the other hand, mea maxima culpa. If I am wrong, or if I have injured anyone's feelings here, I apologize sincerely. Cheers, Alan Tomlinson

@jutukka 23 дня назад

@@diegorhoenisch62 I don't understand this at all. I just told my personal approach to using tube shields, based on physical facts of glass as an amorphous solid. It was not anything else. I just cannot understand how it could be inappropriate. On subject, Page 8 Glass failures: www.worldradiohistory.com/BOOKSHELF-ARH/Technology/Technology-Vacuum-Tube/Getting-the-Most-Out-of-Vacuum-Tubes-Robert-B-Tomer-1960-(164-pages).pdf

@joeltunnah 23 дня назад

@@diegorhoenisch62 that escalated quickly. smh

@drrobert2120 23 дня назад

#1!!!

@davidcoolomfg8129 23 дня назад

Yay!!!

@jimdeavenport9952 23 дня назад

Your layout work is superb. Some very nice video that will come in handy and hopefully here in the near future to use on my Brother n Law's 1958 Fender Bassman. We have been threatening to go back in and replace all the electrolytics at a minimum since the day we resurrected it after a 20 year Rip Van WInkle nap 5 years ago. A previous owner of the amp was a professional bass player and gigged with a lot so we know there are most likely some weak links in it so it doesn't get fired up as often and babied at that when it does. I am a believer in full restoration and use rather than Keep it Original Museum Piece. What good is a Model T if you can't drive it? I just sent a links to my Bro n Law.

@ToddRichmond 21 день назад

I think Semi-Rotten Cotten is playing Glastonbury this year...

@briggsmech7038 23 дня назад

Lyle you are a true artist. What would you charge for a two-week apprenticeship?

@PsionicAudio 23 дня назад

$12,452.73 Otherwise I would not have the time. But thanks.

@tomk1tl39 23 дня назад

👍👍

@unclemeat8422 23 дня назад

Watching on my newish computer monitor instead of phone tonight. Image looks as fresh as the amp restoration Lyle!! There is a “64 Bassman head and cab with webers down the street for sale. Would it sound anything like what your rebuilding?

@PsionicAudio 23 дня назад

The ‘64 model is a very different amp, but cool in its own way. Thanks.

@NinerFourWhiskey 23 дня назад

Does your 1958 Bassman have *linear* volume pots? My 1960 5F6A does, and they're factory original, matching date codes. I've seen same in most later 5F6A along with the "non-scratchy" presence control circuit with a 25K pot.

@PsionicAudio 22 дня назад

Yes it does.

@jezmez68 22 дня назад

So is there a kit to make one of these somewhere? Eventually, I would like to make and amp, and I would love a Bassman with 4 celestion cream backs.

@johnwilliamson467 23 дня назад

Ceramic are too fragile for regular gigging . Well at least that has been my experience . Very good for high voltage if the pins are quality is they do not get shocked physically . Carter admin well there you go again good video again .

@PsionicAudio 23 дня назад

These were much higher quality ceramics than you usually find, but phenolic/micalex is my preference.

@goodun2974 23 дня назад

@@PsionicAudio , "gold" plating is often no more than a marketing ploy or scam nowadays; a layer of gold only a few microns thick is indistinguishable from solid gold to the naked eye, but I've seen lots of cheap connectors where the plating underneath the "gold" flakes off easily when stressed or flexed. Is it even gold or merely some fake 1 carat alloy made to look like gold? Nickel is much tougher, a good conductor, and easy to solder to as long as it's clean.

@TimBoulette 20 дней назад

@6:17 Well. I guess you'll just have to get yourself a TARDIS then.

@MrDonc78 19 дней назад

Hey i live right outside Memphis. I was wondering about how much it would cost to shift the eq and increase gain on my orange ad200b?

@Gym123-hifi 16 дней назад

Have you measured noise level with and without tube shields on V1, V2 and V3 and if so, was it lowered significantly when the shields were in place?

@chrisfit 23 дня назад

Regarding the cap to ground on the standby switch, is that potentially dangerous? If it fails isn't it just like the "deathcap"? I must be missing something. Thanks!

@PsionicAudio 23 дня назад

The “death cap” has AC on it, often approaching the max AC rating of the cap used. This cap is rated for 630V DC, and will have @420-500VDC on it. So not really risky, and should it fail as a short it would simply trip the fuse, not make the chassis electrically live before the fuse (as the old polarity circuit can do).

@edwardebel1847 22 дня назад

At 5:30...was Borat helping out?

@steveh1273 23 дня назад

how come all amps don't have a 47nf cap at the standby switch? Is this a common practice?

@PsionicAudio 22 дня назад

Most amps have standby after the reservoir (first filter) node. This circuit has SB before the reservoir so the added cap is needed. Standby is not needed in this amp with the rectifier tube, but as it’s a valuable fairly rare amp I’m just restoring that part of the circuit too.

@PsionicAudio 22 дня назад

PS a rectifier (tube or solid state) has a higher DC output with a capacitive load than without, so there would have been a large voltage spike if the switch didn’t have that cap. There is still a spike as 100nF isn’t much of a load compared to 40uF, but it’s better than having a no-load state on the rectifier. Hard on the rectifier tube, too.

@steveh1273 21 день назад

@@PsionicAudio Thanks for the reply and knowledge!

@Eric86Pete 22 дня назад

Hey Lyle, how do I get in touch with you for a mod package to my AC30? I’ve emailed but haven’t heard back. Thanks man!

@PsionicAudio 22 дня назад

Sorry, please be patient. I’m a one man shop and I’m drowning in emails.

@Eric86Pete 22 дня назад

@@PsionicAudiono worries! Just wanted to make sure I’m on your list in some way, shape or form! The exploding inbox is a testament to your work! Thanks for the reply!

@jonnybeck6723 23 дня назад

"...semi-rotten cotton"

@schmolly75 20 дней назад

Why don't you look for vintage capacitors in the audio path ? It is possible to find Sprague 160P or 6PS or Sangamo 33-M or even the famous Blue molded . They sound incredibly better than modern metalized film. I'm in France and i've paid $$$ by ebay to buy these kind of caps but everybody tells me that my amps sound very good.

@PsionicAudio 20 дней назад

Because I disagree with the premise. I’ve done blind testing. I could put just about any cap I choose in this. And I’m entirely confident in these MKT1813s. And they’re pretty for those who hear with their eyes (not saying you do that). I do like the 6PS caps but I prefer radials for eyelet boards.

@joeltunnah 23 дня назад

Nice work, but man, those old Fender eyelet boards are ugly, and the connections on the back... ugh. I know it's iconoclastic, but since it's already "player grade" I would have swapped it out for a turret board on standoffs, with all connections visible and accessible on top. One minor correction: the 68k input resistors are mixers, not "grid stoppers" which need to be physically on the socket pins. I'm sure you know that, but others may not.

@PsionicAudio 22 дня назад

They are only mixers if you use both inputs of a channel at once. If you use the lower gain input then they form a voltage divider and act as a grid stopper. If you use the higher gain input they (in parallel) are a grid stopper, though not perfectly located.

@Relayer6a 23 дня назад

Maybe I missed it, did you say you cleaned it? 🙃

@PsionicAudio 22 дня назад

I think I might have. Accidentally.

@pauldavis6356 23 дня назад

"Vomitish" - Something that resembles, but is not quite vomit. 🤮

@wallpapermusique 22 дня назад

"Red right sounds political"?? It sounds nautical to me...."red right returning". How many sailors/boaters here??

@hootowl6354 21 день назад

Who cares if it's "period-correct"? It's just a three-thousand-dollar amplifier that doesn't sound any better than some other new three-thousand-dollar amplifiers. It's not a million-dollar Ferrari, of which only a few were made and will never be reproduced. Of course, some obsessive-compulsive people need for them to be period-correct.🤦‍♂ I wouldn't drill holes in it though. All the other things can be brought back to original specs for the psychologically challenged to buy later.