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Post by shortyg83 on Sept 26, 2016 14:47:35 GMT -5
I have a XPA2 Gen 2 amp hooked up to Focal Aria 936 mains. When the amp first comes on and there is about 5-10 seconds of random static and popping sounds. This seems to also randomly happen if the amp isn't receiving a signal. I at first thought it was my receiver sending something crappy, but I recently upgraded the receiver and the problem still exists. It only happens on the right channel and seems to only happen when there is no sound getting sent.
Has anyone had this issue?
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Post by novisnick on Sept 26, 2016 14:53:30 GMT -5
I have a XPA2 Gen 2 amp hooked up to Focal Aria 936 mains. When the amp first comes on and there is about 5-10 seconds of random static and popping sounds. This seems to also randomly happen if the amp isn't receiving a signal. I at first thought it was my receiver sending something crappy, but I recently upgraded the receiver and the problem still exists. It only happens on the right channel and seems to only happen when there is no sound getting sent. Has anyone had this issue? Recheck your speaker cables, especially if there are 🍌 banana plugs on them. Should be nice and tight. |
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Post by Soup on Sept 26, 2016 17:21:51 GMT -5
If tightening the cable doesn't work, switch out cable. Problem persist. I always try for the easiest solution first.
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Post by adaboy on Sept 26, 2016 22:05:25 GMT -5
I have a XPA2 Gen 2 amp hooked up to Focal Aria 936 mains. When the amp first comes on and there is about 5-10 seconds of random static and popping sounds. This seems to also randomly happen if the amp isn't receiving a signal. I at first thought it was my receiver sending something crappy, but I recently upgraded the receiver and the problem still exists. It only happens on the right channel and seems to only happen when there is no sound getting sent. Has anyone had this issue? Hmmm, I have an xpa-3 gen 1 and when it first fires up while going through start-up the three channels provide white noise. So (L) channel sheeh (C) channel sheeh (R) channel Sheeh and then silence and ready to go. Not sure if you experience the same? |
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Post by garbulky on Sept 27, 2016 0:03:04 GMT -5
I thought I heard something similar on another thread some time ago. I think some people suspected it to be either a loose solder joint or a capacitor problem (leaky?)
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Post by shortyg83 on Sept 28, 2016 16:59:27 GMT -5
I have a XPA2 Gen 2 amp hooked up to Focal Aria 936 mains. When the amp first comes on and there is about 5-10 seconds of random static and popping sounds. This seems to also randomly happen if the amp isn't receiving a signal. I at first thought it was my receiver sending something crappy, but I recently upgraded the receiver and the problem still exists. It only happens on the right channel and seems to only happen when there is no sound getting sent. Has anyone had this issue? Hmmm, I have an xpa-3 gen 1 and when it first fires up while going through start-up the three channels provide white noise. So (L) channel sheeh (C) channel sheeh (R) channel Sheeh and then silence and ready to go. Not sure if you experience the same? Mine is only out of the right channel. And it isn't white noise it as actually like a couple like static popping noises. |
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Post by adaboy on Sept 28, 2016 17:18:36 GMT -5
Hmmm, I have an xpa-3 gen 1 and when it first fires up while going through start-up the three channels provide white noise. So (L) channel sheeh (C) channel sheeh (R) channel Sheeh and then silence and ready to go. Not sure if you experience the same? Mine is only out of the right channel. And it isn't white noise it as actually like a couple like static popping noises. Thanks for sharing, Hmm have you tried swapping the input to the amp cables to see if it comes out of the left channel? Or Disconnect all inputs to the amp then turn it on to see if you hear the same static pop. |
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Post by leonski on Oct 22, 2016 1:34:36 GMT -5
Yes, by all means. Start swapping cables L/R and ONLY one pair at a time. You may also simply disconnect all input to the amp and see if THAT still produces the noise. IF YES, swap speaker connections. I loose wire on a binding post may do what you notice.
If the input disconnect eliminates noise, reconnect the preamp with NO inputs. Start trouble shooting THAT with ALSO swapping L/R.
When Disconnecting RCA (single ended) cables grab ONLY the connector and NOT the wire. Excess pulling / flexing can cause a shielding problem which you may hear as what you notice.
In any event, if you DO find a suspect cable, buy good ones but not necessarily Expensive ones. I like BlueJeans cable, but what do I know?
Going at a problem like this both ONE step at a time and Systematically is the ONLY way to be sure.
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Post by shortyg83 on Jan 5, 2017 15:19:20 GMT -5
Hey guys, I haven't gotten to post in a while but my Amp is still having the problem.
The static is only on the right channel and happens no matter what speaker is hooked to it.
It stays on the right channel when reversing rca connections. And still happens without the RCA connected at all.
Only happens for the first 5 minutes or so when the amp is turned on. Random static and popping sounds.
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Post by leonski on Jan 5, 2017 15:28:38 GMT -5
SOUNDS like you have either a Cold Solder joint which 'fixes' itself when unit warms, or MAYBE a dying OUTPUT device which is 'leaky' until it, too, warms.
One way to diagnose is with a can of 'cold' stuff. With the unit ON, spritz the output devices ONE AT A TIME and listen. Same for solder joints between major sections.
If the cold-stuff produces an effect (The crackling would be nice) you've found the fault. Let it warm back up, at least 10 to 15 minutes and REPEAT.
If you lack the experience or confidence to do this, take it to a TECH and explain what you are seeing and what you've done to diagnose. Be clear and specific.
IF you get the amp fixed, most techs will eat the diagnosis fees he'll talk about when you enter the shop.
Have you SWAPPED SPEAKER WIRES at the AMP ONLY?
Broad diagnosis isn't that tough, though AS USUAL, the Devil is in the Details.
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Post by shortyg83 on Jan 5, 2017 15:55:38 GMT -5
Called emotiva and setup up a warranty RMA. I swapped speaker wires at the amp only. And the problem stays with the right channel of the amp no matter what is connected to it.
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Post by leonski on Jan 5, 2017 18:19:56 GMT -5
Output transistor going south or a cold solder. Either in the 'noisy' channel will do what you note:
Please post back. I'll give myself a 30% chance of nailing this, based on your info.
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Post by mcsortan on Oct 6, 2019 17:45:37 GMT -5
Hi
Just wondering if you are still having your static problem?
I have three XPA2 Gen 2 amps all doing the exact thing.
I have been cycling these through my local repair agent and have had mixed success in getting them fixed.
Most recently one amp was fixed but after about 4 weeks starting to exhibit the problem again.
Our experience is that there is problems in the power amp section and have been replacing caps and transistors trying to resolve it.
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Post by vcautokid on Oct 8, 2019 0:21:44 GMT -5
Try running the XPA-2 without any input cables at all and just leave it on with the speakers connected to see if the noise still happens. The idea is to isolate the amplifier completely from any input except AC power. If the noise persists could be a leaky cap or pre driver transistor or something like that. No one knows till someone puts it on the bench and analyzes it for the fault cause.
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