I miss my B200s

[Dante]

It worked through practice without any issue, so yay.

I didn't swap the cables to be sure it wasn't my MP-2 with the volume diff....I should have done that. I will take a look at it when I get back to the practice space. I was just going with it uneven to try it out...didn't troubleshoot at all.

The whole concept of the B200s being so simple is why I'm not intimidated by opening it up and fixing what needs fixing. It didn't look like that case had ever been opened, inside is pristine.

I will bring my Deoxit and clean out that pot again, then swap the cables and troubleshoot.

BTW: That amp gets LOUD

[Harley Hexxe]

Hey Dante,

    If it were me, I would take a look at any resistors for discoloration, especially near the filter caps. I would also use a plastic rod, or some other non-conductive tool to move any wires or ribbon cables gently to see if that low side changes volume levels. Tapping with that tool in various places around the PC board might also reveal an area where the problem could be, (I would be doing this with a signal going through it, so be very careful where you touch).

   I think Richard's suggestion of freshening up the solder joints is a good one, after all they are pretty old, but also look for loose solder connections too. Solder joints can crack, and components can move, even slightly.

[rnolan]

Hey Dante, ( BTW: That amp gets LOUD ) . Nothing quite like 124w p/c into 4 ohms, probably 100 (ish) into  8 ohms, so 200w .

One suggestion though, I'd move the MP2 to the top of the rack, mostly because of heat.  MP2s get really hot on top, B200s also get hot on top (that's where the output transistors are mounted), so the B200s heat will go straight into the MP2.  I suspect the boss thingy isn't as deep ??, so putting it in between will let the heat circulate better and the extra space in the top of the rack will let the MP2 breathe.

[Dante]

All good advice

Harley: I'll get in there with a chopstick,  and look for any discoloration on the resistors 

Richard: but I want the ADA gear together....maybe I'll put the Boss FX on bottom

[rnolan]

Hey Dante, why do you want them together? Looks?

But with Boss Fx on the bottom?, well MP2 on top is the main thing so it get more air on top of it, but Boss Fx in the middle is best for heat dissipation.  Also B200s on the bottom is better for weight distribution.

But hey it obviously will work fine how you have it now.

[Dante]

Hey Dante, why do you want them together? Looks?

Yes, purely for looks. I don't want the orange thingy between the other two. Honestly, it's in a basement now, so it's never going to overheat. That rig is in retirement, I'm using my H&K and my MP-1 Classic