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Why do subwoofers thump when turning on power amp?
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Posted on April 11, 2017 at 09:17:51 | ||
Posts: 6701
Location: East of the 100th meridian USofA Joined: March 21, 2005 Contributor Since: October 1, 2005 |
Hello, What would cause my powered subwoofers to "thump" when the power amp comes out of standby mode? To clarify: I first turn on my tube preamplifier and let it power up, stabilize, and come out of mute mode. I then bring the power amp out of standby mode and it stabilizes and powers up. The powered subwoofers (one for each channel) are connected to the preamplifier's RCA pre-out terminals. The subs are left in standby mode and use RCA interconnect signals to trigger to power up. The thump happens when the power amp "clicks" on from standby mode and it only happens to the subwoofers, not the main speakers. To make things complicated, the thump doesn't happen every time; occasionally there is no thump. I haven't been able to come up with any cause-and-effect relationship though. I know I could just turn the subwoofers completely off each time and then turn them back on after the power amp comes out of standby mode but I like the convenience of using the DC trigger feature. Any ideas? Regards, |
Just in their nature to thump, posted on April 11, 2017 at 15:48:58 | |
Subwoofers Thump out the bass Birds churp Women complain Just the natural order of things. |
:-), posted on April 11, 2017 at 20:10:34 | |
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Glad to be of help - n/t, posted on April 14, 2017 at 21:08:42 | |
Posts: 20316
Location: Upstate NY Joined: April 15, 2004 |
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