M Fowler wrote:Henry that is just way too clean now and all that could have fit in a champ chassis. Well maybe a PR chassis
Is this similiar to the Bassman conversion you did with relay switching the gain, there are two relays it looks like. But ths is a 100 watter right?
I to am interested in your layout any info as I have a Bassman 100 to redo to Showman or your redo of ToneMaster. looks like less is more in this case. Any help, or clips would be appreciated. Thanks Bob
I modded a pro reverb in the early 90s before I knew what the amp was worth. I picked up the amp for $160 and I put in the "boogie" kit which removed the tremolo stage and added a switchable gain stage.
The one cool thing I liked was the "dual stage master" in other words, a PPIMV. The mod did what it advertised, it made that amp SCREAM. Endless sustain was effortless and controllable. But it ruined the value of a good amp. I learned a lot about amps, though. I guess that's like the ES-335 that Eddie Van Halen wrecked learning about modding guitars.
I basically got the Torres Mod working better just going through the amp and replacing a lot of the old CC resistors of which many were in very bad condition.
Next will be redoing the shielded wiring and replacing the 24awg wiring that was used.
I find that the amp is out of phase so for now I just made a special speaker cord before I figure out which stage is causing the phasing.
FUCHSAUDIO wrote:I always wondered wtf was up with all the dual pots, paralleled ? I gotta ask Bruce sometime...weird... Maybe Apex had a sale...
I have had to replace quite a few of those crappy dual pots in a *inky design fender. He used a cheap pot and doubled it for noise? reliability ? I always replace them with a CTS or better , they never come back.
The only bright spot is he uses little of no NFB in most. But he over cooks the reverb driver tube .
Never liked any of the Riviera designs, too messy and ugly sounding . I think these guy sit around and draw them up and never actually play test them.
The reverb in my Torres Super Reverb conversion is way too hot not very good sounding and that will be addressed as well later. It uses the 12AT7 but when Torres did the reverb on both channels and OD it boosts the signal too much.
I have not taken voltages yet as I am trying to straighten the rats ness every once in awhile I look at the amp.
FUCHSAUDIO wrote:I always wondered wtf was up with all the dual pots, paralleled ? I gotta ask Bruce sometime...weird... Maybe Apex had a sale...
I have had to replace quite a few of those crappy dual pots in a *inky design fender. He used a cheap pot and doubled it for noise? reliability ? I always replace them with a CTS or better , they never come back.
The only bright spot is he uses little of no NFB in most. But he over cooks the reverb driver tube .
Never liked any of the Riviera designs, too messy and ugly sounding . I think these guy sit around and draw them up and never actually play test them.
They appear to be Alpha, which is not a bad pot generally, but I still want to know why ?!?!?!?!
FUCHSAUDIO wrote:They appear to be Alpha, which is not a bad pot generally, but I still want to know why ?!?!?!?!
Brought to you by the Department of Repetitive Redundancy Department. Note that most of them are wired with all tabs in parallel - a scratch on one trace most likely won't be on another so they MIGHT be more consistent with fewer flaws (on average) on the traces. I've heard the arguments before but never bought into it enough to bother. It's not like the amp is going to crash and burn and everyone is gonna die from it...
I come across hot glue in amps all the time! It's a meth "tweakers" signature fix. It's really sad how little common sense people have.
Sorry for the loss of your amplifier, nice picture though it would make a funny post card or tee shirt for us amp nerds.
Something like
"friends don't let friends work on amps".
Or "do your bro a solid and don't do it."
Or "keep art class out of amplifiers"