Please help, my amp went retarted!

[juanmgarza26 10+ year member]

Long story short, my sub amp is haywire, i was bumbin on the way home from school and then i went to the store and when i started my car the bass was super weak, so when i got home i popped the trunk and got my dmm, and i put a 40hz test tone, volume 42/62 on HU and the reading was 7.2-8.0 odd, so i looked at the gain and its where its been set when i set it, so i turned it up and it spiked to 40+++++ theres a "gap" sorta say, my reading is suppose to be 32 flat... has anyone had this problem before??

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[Phoenix Risen 10+ year member]

sounds like the gain pot went bad, what amp?

 

[juanmgarza26 10+ year member]

sounds like the gain pot went bad, what amp?

i'll get a pic up right now, db drive spa 1000.1 its the one with the db logo in the middle of the amp

 

[juanmgarza26 10+ year member]

http://www.mycarforum.com/ppclass/data/6/large/IMG_5539_1.JPG

 

[juanmgarza26 10+ year member]

also, once it goes up on the dmm i hook up a sub to see what is happening sound wise, and when it goes beyond 8v to the 40++ its just sustained... i play music music and it just plays one solid continuous note...

 

[mat3833 10+ year member]

output circuit has a short if im not mistaken. had the same problem with one my my HT plate amps.

Matt

 

[juanmgarza26 10+ year member]

output circuit has a short if im not mistaken. had the same problem with one my my HT plate amps.
Matt

possibility its not the gain knob?

 

[mat3833 10+ year member]

im not sure. the plate amp didnt have a level or gain control. but it sounds almost exactly whats happening to yours.

Matt

 

[juanmgarza26 10+ year member]

im not sure. the plate amp didnt have a level or gain control. but it sounds almost exactly whats happening to yours.
Matt

would a gut pic help?

 

[mat3833 10+ year member]

lol, not really. im not an amp repair guy. if you pull the cover off and look at the board you might find something wrong near the speaker terminals.

Matt

 

[juanmgarza26 10+ year member]

lol, not really. im not an amp repair guy. if you pull the cover off and look at the board you might find something wrong near the speaker terminals.
Matt

worth a shot, hope someone else on here can take a look at my problem, thanks for the input Matt

 

[mat3833 10+ year member]

NP

Matt