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I have a dva 5210 alpine head unit,

theres nothing in the instruction manual.

I cant get anything outta the subs, the light is on the amp wondering if anyone can help. and does anyone know how to change the clock in these things the manual gives you nothing.

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https://www.sau.com.au/forums/topic/156741-alpine-problem/
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i dont know if this helps but when i wired my alpine amp up to my clarion head unit i had no volume control turns out it was cos i put the sub pre out to the wrong one ,there was one assigned to the subwoofer and i put it into a normal speaker one. silly me :happy:

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https://www.sau.com.au/forums/topic/156741-alpine-problem/#findComment-2913191
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Have you recently installed this unit and can't get it to work, or did it just stop working one day?

I have a problem with my Alpine (due to the original owner using the normal RCA's instead of the specific subwoofer RCA's). When I reset my Alpine head unit, it automatically turns the 'Sub' light on the head unit, which cancels sub frequencies to the subwoofer.

It's probably not ur problem, but a possibility.

Fixxxer

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https://www.sau.com.au/forums/topic/156741-alpine-problem/#findComment-2914453
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Just whenever I disconnect my car battery (and lose all settings on the headunit) it always comes back with the 'Sub' light showing on the headunit. I just go into the function/setup of the headunit, and turn the 'Sub' from 'ON' to 'OFF'. By turning it to 'OFF' the sub frequencies are not cancelled out.

Fixxxer

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https://www.sau.com.au/forums/topic/156741-alpine-problem/#findComment-2915400
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