Vox AD30VT amp problem

[Mobius]

My Vox AD30VT keep making these obvious farting noises when I use those hi gain amp models - UK70s, UK80s, UK Modern, NUmetal, US High Gain. Even I trn down the gain, it still has those farting noises. These farting noises happens sporadically. I checked my cables and find that they are not the cause.

These farting noise doesnt happen when I use the other amp models.

One other thing is when i turn down the wattage (the amp has a wattage attenuator), the farting becomes more intense. Is this problem due to the speaker cone or the circuit? PLeas help me......

 

[gsonique]

Are you getting only farting sound ??

 

[Mobius]

Yup. It only starts farting like after 10-20s when I switch to those amp models. Sometimes it goes away when I switch off the amp and turn it on again, but sometimes it doesnt.

 

[gsonique]

I believe you are not the only one ...check out Harmony Central

 

[Mobius]

Thnks gsonique. read the reviews, its due to poor circuitry, damn it. :x

 

[johnny_be_goode]

search or post at these forum

http://www.valvetronix.net/valvetronix/index.html

and

http://www.patchtronix.com/index.php

try resetting, cleaning the input jack, etc...