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  #91  
Old 12-19-2017, 11:20 PM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
Join Date: Apr 2015
Location: Orlando FL
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Here is my method of restuffing the cans.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #92  
Old 12-19-2017, 11:21 PM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
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Continued..
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #93  
Old 12-20-2017, 01:45 PM
kvflyer kvflyer is offline
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That's about the way that I do them. I have purchased over the years a few NOS capacitors specifically for the purpose of procuring the steel mounting ring out of them. The "Twist Loc" tabs are usually not in the best of condition when you remove the old capacitor from the phenolic mounting washer.

Nice job...
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  #94  
Old 12-20-2017, 08:14 PM
Vaultovinyl Vaultovinyl is offline
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To the folks somewhere back up in the thread: What were you all saying about guitar amplifier snobs wanting the original caps in their amps? I've always thought that 'stuffing' old caps was quite a bit nutty too.

The whole thing about the caps in guitar amps primarily has to do with the tonal qualities of the amp vs. the types of caps used in its build. It's not necessarily the old caps that give it 'the sound'. It's what type of caps give it 'the sound'. It's usually a matter of PIO (paper in oil) vs. Poly/Mylar. (I call it "IT". PIO caps have "IT" while Poly/Mylar caps do not). The sound guitarists are looking for is a combination of tone coloration, breakup/distortion and compression/sag. Power filter caps do not generally affect the tone but rather the responsiveness of the amp. Old filter caps allow a lot of sag in the power supply which lends the amp to having a natural compression on it's output. Beefing up the power supply with new and/or larger capacity filters tightens up the amp and gives it's output a more aggressive attack. Replaced filter caps in the power supply are usually not viewed as a bad thing. Sag can also be adjusted with use of different rectifier tubes. Breakup/distortion is most easily achieved and controlled with preamp tube gain and speaker cone material, design and size.

The caps that matter the most in a guitar are in the tone stack/circuit. In a vintage amp the worst possible thing you can do is change these, especially if they were relatively in spec. It's generally agreed that PIO caps have a richer harmonic quality than Mylar. I know in theory it doesn't make any sense but when you hear them side by side, there is a difference. I didn't believe it either until I tried it. Aside from the amp, the PIO caps in the tone control in the guitar have an even more dramatic effect than they do in the amp. Most guitars have the tiniest most basic of Mylar caps(some even use ceramic caps) on their tone controls. When you swap those out for a PIO cap, it completely changes the harmonic richness of the guitar's output. The tone control becomes much smoother and more responsive to change. Any PIO is good for this but the general consensus is Sprague Bumblebees, Black Beauties and Vitamin Q's are the best(hence they want the "old" caps).

SO, in the future, don't go knocking somebody about wanting old caps in their guitar amps and they won't laugh at you for being anal enough to spend countless hours stuffing new caps into old caps. Because both schools of thought are a little nutty.

Last edited by Vaultovinyl; 12-20-2017 at 08:18 PM.
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  #95  
Old 12-20-2017, 09:13 PM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
Join Date: Apr 2015
Location: Orlando FL
Posts: 851
Didnt really need to write a book to prove your point pal...
It is well known that more people believe "audiophiles" are nuts than people that restore vintage TVs. I would never use any black beauty caps in my tube amps that will short, explode, and kill my amp. That's just common sense, or maybe it isn't since you think it's ok? Most of the TVs I find I just toss. There are so many old b&w sets out there that when I do restore them, I use the cheapest parts available simply because I want the damn thing to work. I spend a bit extra on the hard to find sets since there are none. There are hundreds of thousands of tube amps out there that were cheaply made back in the 60s and 70s and the audiofools try to make a cheap piece of equipment better by using leaky caps and expensive parts, where is the thought process in that pursuit? My fender super twin reverb ( which is uncommon ) was restored with the cheapest caps and tubes and it sounds amazing. While you are welcome to voice your opinions about a side topic of this thread, all it is going to do is start a pointless war of words between all of us and in the end no one will win. Take your complaints and post about them in the off topic section. That's why we have it.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #96  
Old 12-20-2017, 11:47 PM
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SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
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Location: Orlando FL
Posts: 851
Checked HOT cathode current and it settles out at around 185 to 190 ma. Seems pretty good but will still do a horizontal alignment. Going to try to throw the jug on it tomorrow and see what happens.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #97  
Old Yesterday, 07:53 PM
SwizzyMan's Avatar
SwizzyMan SwizzyMan is offline
Restoring an admiral c322
 
Join Date: Apr 2015
Location: Orlando FL
Posts: 851
Now that I finally have some time on my hands, it's time to get back to work on the Regent. I will start recapping tomorrow. As you all know, I am trying to keep everything as original looking as possible. This means restuffing all caps and finding a full set of Admiral branded tubes. However I have one major obstacle when it comes to restuffing caps, most paper caps are bumblebees and plastic case which are especially difficult to restuff. Has anyone done this before and can it be done efficiently and effectively? Only I can think of is just splitting them at the seems with a small screwdriver.
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Admiral C322C2 Regent (Restoring)
RCA CTC-7 Pensbury (Restored)
RCA CTC-5 Westcott (Restored)
CRA CTC--4 Director 21 (Restoring)
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  #98  
Old Yesterday, 09:19 PM
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Electronic M Electronic M is offline
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Might be better off molding some material silicone/epoxy/clay/etc. over the new caps then paint it to look like the black beauties. Or restuff some paper shell caps of the same value and use those.
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