Anyone using 60uf total for the 1st Filter on express?

Express, Liverpool, Rocket, Dirty Little Monster, etc.

Moderators: pompeiisneaks, Colossal

Post Reply
johndandry
Posts: 84
Joined: Mon Dec 19, 2011 8:55 pm

Anyone using 60uf total for the 1st Filter on express?

Post by johndandry »

Thinking about using 2 x 30uf caps for a total of 60uf as the first filter on my Rocket pre/express power build. Anyone lower the cap values of these amps with good results? Thinking about going 60uf/30uf/16uf/16uf/16uf on this build. Thoughts?
loctal
Posts: 82
Joined: Wed Feb 27, 2008 12:33 am
Location: stumptown

Re: Anyone using 60uf total for the 1st Filter on express?

Post by loctal »

Yes, it worked fine for an Express I just completed two months ago. I used a JJ 32+32 can cap for the first node with the intention of adding more capacitance if needed. It is the only Express type amp that I have played so I can't say how it is compared to proper Express.
User avatar
martin manning
Posts: 13080
Joined: Sun Jul 06, 2008 12:43 am
Location: 39°06' N 84°30' W

Re: Anyone using 60uf total for the 1st Filter on express?

Post by martin manning »

I believe TAG member rj has done that before with no ill effects observed, and he has built a few Rockets.
johndandry
Posts: 84
Joined: Mon Dec 19, 2011 8:55 pm

Re: Anyone using 60uf total for the 1st Filter on express?

Post by johndandry »

Thanks guys!
User avatar
johnny riff
Posts: 72
Joined: Wed Aug 08, 2007 7:47 pm
Location: N.H. USA

Re: Anyone using 60uf total for the 1st Filter on express?

Post by johnny riff »

with 20% cap tolerances you could end up with 40uf caps measuring close to 30uf.
I don't think you'd hear a big difference.
Roe
Posts: 1643
Joined: Thu May 31, 2007 2:10 pm

Re: Anyone using 60uf total for the 1st Filter on express?

Post by Roe »

I,m using a 33uf cap on the screens that measure 36. A 47uf cap sounded too harsh too me. 60uf on the mains will work but reduce the fast response somewhat when you turn up the amp
www.myspace.com/20bonesband
www.myspace.com/prostitutes
Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s
Post Reply