2. amps-preamps
  3. 160852-139109

Upgrade capacitors in tube amplifier?

I have upgraded crossovers with very good results.  I now have a "very good" IMO chinese tube amplifier that can probably be improved with a couple of capacitor upgrades.  

I don't have a schematic, but I have a picture and I expect some of you knowledgeable folks can point me to/confirm the ones to change.  My thought is to change the two large silver ones first and then maybe the four smaller silver ones (on the circuit boards). 

Would probably replace with something like Jantzen Superior Z-Cap or comparable and go with a higher voltage if space permits.  

https://imgbox.com/rtBfoyg0

Thoughts?


chinook9

Showing 1 response by oldhvymec

Ag insider logo xs@2x
oldhvymec
5,101 posts
 
Yup I see 6 decouping caps also. They look like they are directional. But they look to be good caps.. IF there is NOT a problem, leave it alone. 
I don't think it's broke in yet, is it? 1000 hours or so...
Your one of those guys.. LOL Because it's there.....Right...

Is something missing, a valve roll won't cure? Why do you want to mess
with a new unit? Highs not high enough, lows not low enough...?
What do you want to change? Sound wise.

100.00 will buy some real nice sounding Green EH EL34 for under 100.00. Rubys, ReIssue, Mullard, 100.00 or so..

12ax7 or 12au7s, 100.00 no more.. don't get crazy.. Tellies, PVANE, GEs, Mullards, Volvo, Mazda, RCAs. BE CAREFUL with all the NOS stuff, a LOT of rip offs... I test EVERYTHING...MATCH the valves it will make or break the SQ, in both small and large valves..

Regards..


More to discover