frustrating problem

[Icunningham]

last night i gigged my new svt with my 610 and mark hoppus p bass and for some reason on certain notes it was making a kind of farting noise. anyone got any ideas as to how i can eradicate that problem ?
i had the settings pretty much flat

your help is appreciated

Edited January 13, 2013 by Icunningham

[xgsjx]

What was making the farting noise, cab or drivers? Was it on a specific note & did you try backing off on the lower frequencies?

[Lozz196]

The Hoppus has SD QuarterPounders, and they are very high output pickups, so if the farting noise is on the low G, lower the pickup on that side, keeping all the others where they are. I also get this, as am quite heavy handed, and it`s a try-it-and-see approach. Just keep on til it`s not there anymore. I`ve found that where it`s ok on some amps, or with some brands of strings, change either, and I have to adjust accordingly.

Edited January 13, 2013 by Lozz196

[thinman]

Have you got the input gain too high?

I was really surprised recently when I got a new EBS Reidmar - it has a very high input gain and even with a passive bass only needs to be about 10 o'clock when I was used to about 2 o'clock on other amps.

The strange thing with it was that at first I thought I had a cab problem as the signal broke up badly and unpleasantly but only on lower notes.

Try a lower input gain and turn up the master more.