Alen Old Flame Problem...

[joejazzguitar]

Allen Old Flame Question/Problem
I picked up a used Allen Old Flame a while back, and have recently tried using it on a gig.

I notice that whenever I use a humbucker-equipped guitar and really smack the bass strings, it sounds really farty and compressed; the sound is very similar to either bad speakers or a bad V1 preamp tube.

I changed all the tubes in the amp, rebiased it and ran it through a cab with EV-12's - the farty sound is still there.

This happens at ANY gain setting; the only way that I can minimize the offending tone is to run the preamp gain at less than 2 and run the bass no higher than 1.

Is this an amp problem, or is it just the nature of the this beast with humbuckers?

[bbarnard]

I recently bought an Allen Old Flame head and when testing it, ran into a similar problem (at least it sounds that way) with it when the RAW was cranked all the way up. It started farting/dropping out. Turns out it was a bad solder joint on the input jack. After that was touched up, everything was good. Now that said, I don't play humbuckers, but I don't think that should cause what you are seeing.

[redjet55]

I have a carr slant v6 and with the humbuckers in my JET I have a similar problem. The output from the buckers is just too hot.

Try rolling back the volume a bit. That will reduce your signal level and reduce the bass fart.

The slant has only 1 input and the hums are just too hot. singles are fine.

When I had a bad cat, it had a high and low input, singles were great into the low and hums were great into the high.

if the Allen has high and low inputs use the high for the hums and you should be good.

[Kiwi]

I had the same experience running humbuckers through modern Hot Rod Fenders. Someone advised me to put a low-gain pre-amp tube in the V1 slot (first slot), such as a 5751, 12AT7, or 12AY7. Worth a try.

Kiwi