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Class D Switching Power Amplifiers and Power D/A conversion

Boss NXD3500 car amplifier hooked to an Onkyo 7.2ch home amplifier
Boss NXD3500 car amplifier hooked to an Onkyo 7.2ch home amplifier
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Old 20th August 2016, 01:57 AM   #1
Evolver is offline Evolver
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Join Date: Aug 2016
Default Boss NXD3500 car amplifier hooked to an Onkyo 7.2ch home amplifier

Well Hello, im new here so please dont make fun of me, I have a Boss NXD3500 mono class D amp hooked to a Pioneer 1000w subwoofer that I removed of my car due to space limitations and the problem of that huge sound.

So now I have it installed in a room with an Onkyo amp, I made a rig with a car battery and a UPS so it can recharge the battery and 3 relays so when the amp turns on the UPS turns off and vice versa (That was made due to interference when charging the battery and the amp turned on)

First, I wanted a house amplifier for my subwoofer but didnt find any.


My problem is:

I cant have too much time out of my battery (it dies) and my UPS cant recharge it fast enough, so I was thinking of those 30a 12v dc power supplys used for LEDs, but when I hook a 12v power supply to the BOSS amp I get a hiss out of the subwoofer.

Anyone knows a hint on what can I do to remove the hiss? a diode? a proper power supply for the amp?

Thanks!!!
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