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Sundown Audio

what went wrong?


rfbasshead

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so on Wednesday i was listing to talk radio and i heard a sizzle and then boom, up in smoke this went. im in the process of either repairing or replaceing and before i throw something else in there i want to fix what ever broke this. im running 6 10 in p3 in a 4th off this t2500 a t400.4 t1 comps in the front t1 6x9 in the back, a singer 370 a duralast agm up front a xp3000 an a d2700 in the back. 2 runs from the front to the back and 2 dedicated grounds to the frame up front and in the back as well using all shca ofc 0awg

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gain at like 6-7 out of 11

A lot of amplifier's i've set with the DD-1 and seen set with the DD-1 start clipping after about 30-40% gain... it's likely you were clipping bad and finally it gave out.

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Talk radio. Not the first time I have heard of this. I don't know why exactly. I forget the exact term but it is like old recordings that have little to no bass.

91 C350 Centurion conversion ( Four Door One Ton Bronco)

250A Alternator (Second Alternator Coming Soon)

G65 AGM Up Front  / Two G31 AGM in Back

Pioneer 80PRS

CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage

CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill

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Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon)

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Talk radio. Not the first time I have heard of this. I don't know why exactly. I forget the exact term but it is like old recordings that have little to no bass.

This.

I know what your talking about but I do not recall it 100%

It has to do with how Class D amps work with the output being a high frequency square wave output that is pwm controlled by the input signal of somewhere around 500Khz or higher.

When the input is seeing no signal the amp is going nuts trying to sample the signal that is not there so its trying to compensate for that signal and boost it higher and overworks itself until the amp either blows or your fuse blows from to much current draw (whichever comes first). Due to the crossover limits on the amp you never hear these high pitched frequencies being played either.

It kind of goes back to what Nick at Fi (ndmstang) always said about amps literally microwaving tinsel leads and catching fire..

I had this problem over and over with my pair of American Bass 150.1 amps.

Just turning the volume down to 0 in the drive through while I ordered and got my food caused the amps to blow up.

Was not bumping hard prior to turning it down just a moderate level, voltage was all good, as well as everything else.

Leave the drive thru and turn it up a little and there is no bass, go to the trunk and nothing but smoke.

Now I put my monoblocks on a switch to turn them off when I dont need them being played.

 

 

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