never knows best Posted July 28, 2014 Report Posted July 28, 2014 Turn On/Off Thump Turn on thump can vary from a slight pop to a mind shattering, teeth rattling BOOM! This thump is caused by the audio circuitry stabilizing when power is applied. Most amplifiers and source units have muting circuitry that lasts a couple of seconds to allow these fluctuations to subside before passing a signal. However, if the amplifier un-mutes before the source unit or any other accessory, you better watch out. Here are some things to try if you have turn on thump. Verify that the amp has a good audio ground reference. Dont install the system so the amplifiers can be switched on when the source unit is turned off. If you still have thump, add a turn on delay module in line with the remote turn on wire to the amp.
Syphlyn Posted July 28, 2014 Author Report Posted July 28, 2014 hmm maybe its the sundown then. Everything else works on the amp. It's in excellent condition. Maybe I'll try hooking it up and turning off my HU before I turn off the key. That could fix it. Syphlyns 2000 F150 4.6L V8 H/U: Kendwood KDC-X898 Speakers: 4 x Alpine SPR-68 Speakers 4 Channel Amp: Alpine PDX-F4 Sub: Sundown Zv4 12 Sub Amp: Sundown SAZ-2000D Box: 2.75 Cu Ft @ 31Hz Alternator: Mechman 250A elite series Wiring: All KnuKoncepz 0 gauge OFC + KnuKonceptz Krystal RCAs
Syphlyn Posted July 28, 2014 Author Report Posted July 28, 2014 Turn On/Off Thump Turn on thump can vary from a slight pop to a mind shattering, teeth rattling BOOM! This thump is caused by the audio circuitry stabilizing when power is applied. Most amplifiers and source units have muting circuitry that lasts a couple of seconds to allow these fluctuations to subside before passing a signal. However, if the amplifier un-mutes before the source unit or any other accessory, you better watch out. Here are some things to try if you have turn on thump. Verify that the amp has a good audio ground reference. Dont install the system so the amplifiers can be switched on when the source unit is turned off. If you still have thump, add a turn on delay module in line with the remote turn on wire to the amp. Yeah I have it wired to the HU. The headunit has to be on otherwise nothing else is turned on! Syphlyns 2000 F150 4.6L V8 H/U: Kendwood KDC-X898 Speakers: 4 x Alpine SPR-68 Speakers 4 Channel Amp: Alpine PDX-F4 Sub: Sundown Zv4 12 Sub Amp: Sundown SAZ-2000D Box: 2.75 Cu Ft @ 31Hz Alternator: Mechman 250A elite series Wiring: All KnuKoncepz 0 gauge OFC + KnuKonceptz Krystal RCAs
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