2. amps-preamps
  3. 1194646473

"popping" when moving to balanced cables on Amp

Hi all,

I'm a bit perplexed on something. I just got some balanced XLR cables with Nutrik connectors for my Anthem setup. I have an AMV-20 Anthem Preamp and an MCA-20 amplifier. The cables really made the system come even more alive!

When I turn my setup OFF, there is a HUGE POP that now comes from the speakers when the amp turns off. There was no such massive pop when I was using RCA interconnects.

Is this characteristic??????? I don't know what to do and where to begin diagnosing. I guess one could say it's the cables, but that makes no sense?!!!

I haven't had any problems with the amplifier or the pre-amp and turning the volume DOWN before turning the system off doesn't make any difference.

Help!!!! I don't want to damage my speakers.

I have Revel Performa M22's and the Anthem AVM-20 and MCA-20 as I mentioned above. I am using Audioquest Type 4 speaker cable and now I just got new Balanced XLR connectors (.5 meter) from CableSolutions.
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Showing 3 responses by ghostrider45

ghostrider45
449 posts
 
Dumb question - are you turning the power amp off first, then the pre?
ghostrider45
449 posts
 
No preamp is going to be stable during power up and power down. Internally voltages are changing rapidly and operating conditions for the preamp stages are not established. I would expect some output transients.

It's not your cables. You have to ensure that your power amp is the last thing turned on and the first thing turned off. The trigger does not enforce this.
ghostrider45
449 posts
 
I run monos and they are always last on first off. My pre runs 24x7. Source components are a mixed bag. Some run 24x7, others are turned on/off for each listening session.

Power up sequence is always sources then monos. Power down is the reverse. All switching is manual.

If you must have automated turn on/turn off you need a sequencer, not a trigger. These are built into some power conditioners.

Be careful, though. You don't want anything inline with your power amp that might limit its ability to draw AC current. I prefer having the power amps go straight into the wall.

Remember, it's not high end if it's convenient!
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