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Old 04-24-2013, 05:28 PM   #1
garfo
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Racaping my Tube amp

So, I have a new Bugera V55.I'm assuming that being made in China it could use an upgrade on the caps.(I know, tubes also and transformer and speaker), but lets stick to the caps right now.
Well, bearing in mind that the amp probably has chinese crap caps in it, what caps should I go for?
I've read about orange drops, mallory 150, SoZos and so on.
Well, the Mallorys 150 and the Orange drops are cheaper choices, yet, orange drops has the 225, 715 and 716 series and I have no idea on which ones to use.The mallorys seem ok, even though they are rated 250 volts, would this be enough?
SoZos are very expensive and not selling in Europe, at least that I know.
This amp is designed to have a good sounding clean channel, but it's just bland and tasteless.
Any ideas?
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Old 04-24-2013, 05:30 PM   #2
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Don't bother. Changing the cap composition is not going to turn it into a new amp. And no, 250V is most certainly not enough for almost every single position in the amp.
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Old 04-24-2013, 05:42 PM   #3
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Well, I will be changing things, one bu one, howcome you think caps don't make a difference in tone when so many other people say they do!?
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Old 04-24-2013, 05:46 PM   #4
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Because I'm an electrical engineer, not an internet guru who's modded a few amps here and there. They'll make a difference, but not the one that you think, and certainly not enough to warrant the expense and hassle when you're dealing with a $300 amp.
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Old 04-24-2013, 05:50 PM   #5
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Unless you are completely taken with your Bugera amplifier, it seems like a great deal of time, money and effort to put into that amp. And as has already been said, one size fits all does not work with amplifier caps. Perhaps there are some tech manuals that you could consult. Whatever you do, be careful. Tinkering with a tube amplifier can be hazardous to your health unless you know exactly what you are doing.

Good luck.
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Old 04-24-2013, 05:56 PM   #6
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those superman capes are pretty cool. might be worth considering.
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Old 04-24-2013, 06:27 PM   #7
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Aparently the componemnts used by Bugera are good quality, so I would suggest the best way to improve the tone would be a speaker & valve upgrade....
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Old 04-24-2013, 08:44 PM   #8
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Quote:
Originally Posted by fergus74
Aparently the componemnts used by Bugera are good quality, so I would suggest the best way to improve the tone would be a speaker & valve upgrade....

I'm replacing the valves with a sovteck for pre 1 and JJ's for all of the rest.Will build a closed cabinet and throw a 1x12 in there.Perhaps a Celestion Vintage thirty, not sure yet.
The caps were more a why not do that once I'm already upgrading on the other fields...!?
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Old 04-24-2013, 08:51 PM   #9
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If you do decide to replace the signal caps jump on ebay and look for Russian military caps. I picked up 50 Russian military PIO caps for the price of one Zoso and they are much better caps. It looks like Russians keep finding warehouses of electronic components that got lost in red tape and never made it to the job.
Ebay is your friend.
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Old 04-24-2013, 09:47 PM   #10
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Quote:
Originally Posted by mmolteratx
Because I'm an electrical engineer, not an internet guru who's modded a few amps here and there. They'll make a difference, but not the one that you think, and certainly not enough to warrant the expense and hassle when you're dealing with a $300 amp.


I am no EE but I recapped 2 of my Blue Voodoos after a coupling cap took a dump in each. There was no noticeable change in sound or tone.

I used Orange drop in one of them, which I do not recommend due to the price and size. I used Xicon and Silver Mica for the other one.


Unless one fails there is no reason to recap it.


*i later changed the values while modding it. That made a difference.
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Old 04-25-2013, 07:18 PM   #11
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With the money, time and energy you are going to spend on this you might as well get a V22 instead because they sound better



Also, are you doing this yourself as a project or are you going to pay someone to do it?

Hell man, get a really nice 212 cab and some NOS tubes before you spend a dime on capacitors.
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Old 04-25-2013, 08:00 PM   #12
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Originally Posted by 311ZOSOVHJH
With the money, time and energy you are going to spend on this you might as well get a V22 instead because they sound better



Also, are you doing this yourself as a project or are you going to pay someone to do it?

Hell man, get a really 212 cab and some NOS tubes before you spend a dime on capacitors.
Agreed. Swapping caps unless they have gone faulty is about the last thing that you'd do. Change the things that make the biggest difference first.
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Old 04-25-2013, 08:10 PM   #13
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Tube changes make a bigger difference than you think.
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Old 04-25-2013, 08:13 PM   #14
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And speakers even moreso.
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Old 04-25-2013, 08:35 PM   #15
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FWIW, Sovtek are crap. Don't subject V1 to a Sovtek. Stick with JJs or try an EXH or Tung Sol.
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Old 04-25-2013, 08:46 PM   #16
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The Sovtek 12AX7LPS is a good tube though. The W series ones are total shit though, no argument there.
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Old 04-25-2013, 10:19 PM   #17
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Originally Posted by Cathbard
The Sovtek 12AX7LPS is a good tube though. The W series ones are total shit though, no argument there.

Copy Cath, I used the WA...nothing special...quickly replaced it.
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Old 04-25-2013, 11:20 PM   #18
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And btw, recaping is what Batman does when he spills bat beer on his cape. I think the word you are looking for is recapping.
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Old 04-26-2013, 06:43 AM   #19
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Thank you for the English lesson, I'm sure that's very helpful for the thread.
Anyways, I'm using a 5751 for the first pre-amp tube, and the rest is jj 12ax7 and 2 jj 6l6.
These are all on their way and I'll do the swapp of the pre tubes.The power I'll leave to someone else.I will take a look at the schematic of the amp and see the value of the cappacitors and figure out a way to improve tone by adjusting values.
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Old 04-26-2013, 07:21 AM   #20
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Thank you for the English lesson, I'm sure that's very helpful for the thread.


to be fair, it was as helpful to it as the actual advice, considering you're still looking at swapping cap values instead of trying different speakers etc. first which was recommended by literally everyone* in this thread.


























* apart from me, I just came in for teh lulz to make a stupid cape joke.
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