Re: DRRI Upgrade ideas

J.P. wrote:
Well, My nephew and I are starting to look into parts for upgrading
his DRRI to a PTP Hoffman board with 6L6's. So far, we are looking
into using the stock PS, choke, RT, and replacing the OT with a multi
tapped unit that will handle 6L6's and maybe 6V6's also in case he
decides he wants to change back in the future. I want to install a
couple of bias taps for the output tubes with meter binding posts and
bias pots adjustable through the chassis bottom also..Probably behind
the tubes also so they are out of the way and not an easy access. He is looking for something as nice sounding as his SRRI but in a
more portable box. He also wants to dump the bright switches and not
cut any extra holes in the faceplate. We will likely place the speaker
ohm selector switchplate on in the rear or mount it through the
chassis behind the tubes somewhere also.

I'd just pick the amp I like the best, with a channel or two whose controls match the DRRI, and clone that. SR, BFDR, VibroKing, one
of those.

Anyone have any suggestions that might give us improved tone or
other ideas that might make this a better upgrade. He does not want a
master volume on it. Any brands or part numbers of stuff might help
also. I forgot to mention he is replacing all the tubes. And this is a
budged project also. As reasonable as possible.I plan on using metal
resistors of double stock wattages and fireproof resistors of 1 extra
watt on the voltage divider circuit. (3 watts instead of the stock 2
watters, ect)

I tend to use metal films on the plate resistors for
lower noise and carbon films (or high quality carbon
comps for some customers) everywhere else. Someone
(Randall Aiken, IIRC) makes a case for carbon comps
in the PI plate spots for tone, but they will eventually
drift and get noisier, even if they're quiet enough
initially.

He wants this to play around Austin at open mic nights and whatnot.
His preferred style is SRV and Hendrix stuff and I am trying to get
him stage time so he can continue to grow as a guitarist. Maybe he'll
make Antone's and a few of those clubs one of these days...and he
doesn't even get high or drink! But neither do I anymore.. lol ..J.P.

Let me know when he starts playing around; I'll make one.
I've got to get to Red 7 the 5th to hear Black Winter (kids
from Round Rock area, good stuff).

-Miles
.

Relevant Pages

  • Re: DRRI Upgrade ideas
    ... into using the stock PS, choke, RT, and replacing the OT with a multi ... the tubes also so they are out of the way and not an easy access. ... I forgot to mention he is replacing all the tubes. ... Bright switches on a DRRI? ...
    (alt.guitar.amps)
  • Re: DRRI Upgrade ideas
    ... into using the stock PS, choke, RT, and replacing the OT with a multi ... the tubes also so they are out of the way and not an easy access. ... I forgot to mention he is replacing all the tubes. ... Bright switches on a DRRI? ...
    (alt.guitar.amps)
  • Re: DRRI Upgrade ideas
    ... his DRRI to a PTP Hoffman board with 6L6's. ... into using the stock PS, choke, RT, and replacing the OT with a multi ... the tubes also so they are out of the way and not an easy access. ... I forgot to mention he is replacing all the tubes. ...
    (alt.guitar.amps)
  • Re: DRRI Upgrade ideas
    ... into using the stock PS, choke, RT, and replacing the OT with a multi ... the tubes also so they are out of the way and not an easy access. ... He also wants to dump the bright switches and not ... I forgot to mention he is replacing all the tubes. ...
    (alt.guitar.amps)
  • Re: DRRI Upgrade ideas
    ... into using the stock PS, choke, RT, and replacing the OT with a multi ... the tubes also so they are out of the way and not an easy access. ... He also wants to dump the bright switches and not ... Bright switches on a DRRI? ...
    (alt.guitar.amps)