master volume issue?

[musicman4lyfe]

My amp recently lost its maximum volume. I have to turn it almost all the way up just to here a somewhat decent volume but even then it becomes distorted when I play certain notes. I've tried other heads on my cabinets and they work fine and I've tried other bases as well. I think it might be the fuse but I'm not sure I've never encountered this problem before. Can anyone give me an idea of what could be wrong?

[Diogenes]

Honestly it could be anything from an OpAmp to just a pot. What make/model?

[musicman4lyfe]

It's a Gallien Krueger 1001rb II

[craig.p]

That is a VERY interesting problem. It almost sounds like voltage starvation, which would point to the power supply. I think the 1001 power supplies are variable-voltage, so I'm wondering if the power supply isn't "seeing" the need for a higher rail voltage when needed, and is stuck at its low-voltage setting. This is TOTAL CONJECTURE on my part.

The fan in that unit was working ok, right?

Well, anyway, I think it's time to send it in to GK. It'll cost some money but you'll get it back in A+ condition.

[Growly Lytes]

Why do you guys mean ? I have an old BXR 60 watt combo that does this same thing because of dust in the pots.

[musicman4lyfe]

The fan runs ok. I believe your right. Time to service the unit. I think I just might bite the bullet and get a svt4 pro. It'll be the last thing I ever buy haha.

[craig.p]

"Last thing I ever buy" indeed, LOL!!

BDDI+QSC was the last thing I ever bought.

Then the MB200 was the last thing I ever bought.

Then the BL600 was the last thing I ever bought.

Now the BX250 has become the last thing I ever bought.

Anyway, to keep this relevant to the thread, you get that 1001 back from GK and save the repair ticket, and you should be able to get top dollar for it used since it's been 100% repaired, updated, checked out, and blessed by the guys who know what makes those things tick.

[musicman4lyfe]

Hahaha thanks for the advice. But hey at least the "last things you ever bought" were worth it lol

[anderbass]

musicman4lyfe, there's one real easy thing you could try: Get an extra guitar cord (you know is good), and plug it in between your amps Effects Send and Return jacks. Then try the amp again and let us know if this helped.

[musicman4lyfe]

Funny you say that Bcuz I tried it and I can play through my effects loop at a fixed volume. But even when I go back to my normal input the volume remains the same.