XPA-2 Amp turn-off thump coming from the speakers

[PapaJac]

Hi,
I have an XPA-2 Amp. Every time I turned off the Amp, there is a turn-off thump coming from the speakers. I haven’t heard this before. Anyone has experienced this problem? How can I avoid or fix it?
The XPA-3 doesn’t have this problem where I have the center and rears.
My configuration is:
UMC-1, XPA-2 and XPA-3, Paradigm Studio 60 V.5
Thanks!
Matt

[wizardofoz]

sounds like a trigger issue... maybe should be in the UMC-1 forum...

[sharkman]

Papajac,

Has this thump occurred since new, or is it a new symptom? If you were to turn on the xpa-2 manually while everything else remained off, does it still happen?

If so it may be an amp problem.

[NorthStar]

It has to do with the preamp and trigger delay. ...A longer delay should do the trick.

[PapaJac]

May 5, 2010 15:43:31 GMT -5 sharkman said:

Papajac,

Has this thump occurred since new, or is it a new symptom? If you were to turn on the xpa-2 manually while everything else remained off, does it still happen?

If so it may be an amp problem.

Seems to be a new symptom. It happens only when turned off. And even having the UMC-1 off too.

[manu]

same problem here brother with xpa-5 have u cure it ,i had the problem from ist day of purchase

[davem]

Have you tried to adjust the trim level on your UMC-1? Your problem has to do with the trigger level I believe. Try setting the levels to zero if they aren't set that way already or as low as possible. Dave

[manu]

Sept 15, 2010 15:20:01 GMT -5 davem said:

Have you tried to adjust the trim level on your UMC-1? Your problem has to do with the trigger level I believe. Try setting the levels to zero if they aren't set that way already or as low as possible. Dave

want to know is this thump damage my speakers ?