i should probably restate what i said

i think it's more in my head than anything not so much that it sounded bad, just wasn't getting quite what i wanted out of it. sounded good, but not great, and indeed when i put the meter on the pi trimmer circuit it was perfectly balanced, ie no voltage difference V3a and V3b at all, so the "balanced" triodes were doing what they were designed to do, and the amp sounded great and, well, balanced, for lack of a better term, but didn't quite get the bloom as i was after. after i made the adjustment though, i got that elusive bloom and all is well.
i think it had more to do with the tube that anything, not that it was bad, just that it is a lower gain tube and set up to be balanced and needed a little help getting that voltage swing. Long story short, making that adjustment made a great amp sound even greater

I was about to sell my Strat because it sounded like crap through the BM (awesome amps can show either how good or bad your guitar is), but after tweaking the PI trimer, i have fallen in love with my strat again, and all my other axes sound even better now.
Gregg

Hi,

I have just completed my overtone build, but I have a fault on the overdrive channel.

When I switch to the overdrive channel, only the pre amp section is working so I  have very little volume compared with the clean channel which is working fine with plenty of volume.

Can anyone help? I would be very grateful for any advise

Thanks

Hi Bluesfenderman
Cheers I'm gonna have a 3 way switch put on the V2b snubber to try a few values there ...........theres no deadly voltages on that one is there!? .....Does anybody have a schematic?

.... read that the HRM circuit isn't as quick to do this. Is this correct?

...noticed the more I play it the more it seems to be relaxing and getting closer to the tone of some of the killer clips I hear.

Hey blues, do you use the clean channel or OD channel when rubbing the strings? I guess my question is...overall is there settings aside from presence (ie: gain levels, rock/jazz switch, etc.) that makes it easier to hear the "sweet spot"? I used the OD channel when adjusting, but didn't know for sure what was best.

I'm a newcomer to the "Dumble Way" and probably have about 25 hrs play time on my amp. (HRM 50) I decided tonight to play with the LNFB switch ON and try to get a real grip on this. Like Todd mentioned it's mostly subtle, but like everything else I'm finding out about this amp, all or most of the different switches and settings can have a big effect on another.

One thing I found is that the volume drop going from rock to jazz in clean mode is not there with LNFB switched on. And it opens up the low end really well. In fact a new favorite setting is the clean channel set to jazz with deep on and LNFB. With single coils mostly.

I'm really starting to see the genius of HAD's design. There are really very many voicings available. The way some of the tone switches interact with others is pretty awesome. I've had amps with lots of switches (Mesa Rectifier) but in the end it never really changed much from the overall sound. Not so with these amps.

The only problem I see, is not being able to get to some of the tweaking possibilities quickly. But then again there comes a time when I need to play the darn song and forget about obsessively messing with the amp. 

I haven't tried that model OTS. I saw a previous post that said they could not find a setting on it that worked when switched from clean to OD: each needed a diff EQ setting, and the OD was harsh. Can you get a good clean sound at all? If you are dialling out the harsh OD, that would mess up your clean. That's why I like the HRM BM

Having said that, I could get a sound working from my Fuchs ODS (non-HRM) and my standard OTS, but D-styles take some work to get your settings.
for me, on the non-HRM ones, I dial the left OD pot down, but that's just me. You have 4 or 5 pots to play with after all, before the EQ, so it needs some serious experimenting.

Does the PAB sound nasal, or the OD?

I find that with the OTS the sparkling highs disappear when I use the loop but truly a great amp.   

you don’t need lousy C-lator

Sorry but for a complete novice (me) how are the 3 components connected together to get the LED operating properly?