Popping Sound Issue – Anthem STR Integrated

[DejavuGR]

Hi everyone,

I own an Anthem STR Integrated amplifier and I’m reaching out to see if any other owners have experienced a similar issue.

After about 1–2 months of use, the amp started producing a noticeable pop sound through the speakers, especially when turning the unit off, and occasionally on power-up as well. The noise is more prominent through the woofers, and it happens regardless of volume level or input source.

I’ve tested it with different speakers (including a smaller pair), different power cables, and even a different power outlet. The pop remains. I’m using XLR connections, and my speakers are Revel F226Be (90dB sensitivity).

Has anyone here experienced something similar with the STR Integrated?
Is this a known behavior, or should I push for a replacement/repair?
Any insight would be greatly appreciated.

Thanks in advance!

 

[TLS Guy]

Hi everyone,

I own an Anthem STR Integrated amplifier and I’m reaching out to see if any other owners have experienced a similar issue.

After about 1–2 months of use, the amp started producing a noticeable pop sound through the speakers, especially when turning the unit off, and occasionally on power-up as well. The noise is more prominent through the woofers, and it happens regardless of volume level or input source.

I’ve tested it with different speakers (including a smaller pair), different power cables, and even a different power outlet. The pop remains. I’m using XLR connections, and my speakers are Revel F226Be (90dB sensitivity).

Has anyone here experienced something similar with the STR Integrated?
Is this a known behavior, or should I push for a replacement/repair?
Any insight would be greatly appreciated.

Thanks in advance!

I suspect the unit has a delay circuit that is not functioning. It is common the have an LM timer circuit in the amp outputs to the speakers, that keeps the speakers disconnected from the amps until the power supply stabilizes. If this fails then you get what you are experiencing. This can damage speakers. Those LM timer chips are set by the value of connected capacitors. If those caps change value over time then the timing is off and you get what you are experiencing. Returning the unit for service is your only solution, other than putting manual switches in your speaker leads, and connecting the speakers after your amp stabilizes.

How you could conclude that changing speakers and cables would change the situation is beyond me. That was not a logical line of endeavor. A passive device like a cable could not possibly generate a any kind of pop, that just defies logic.

 

[lovinthehd]

If it developed only after a period of use I'd contact Anthem for warranty repair/replacement.

 

[AcuDefTechGuy]

Yeah call for repair. Definitely don’t take any more risks of damaging your speakers.