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Head-unit RCA out is not working?
Topic Started: Mar 1 2017, 03:46 PM (206 Views)
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2000 Metro
DEH-X4900BT (Head-unit)
P300‑10 (Amplified Subwoofer)
DEH-X4900BT (Head-unit)
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DEH-X4900BT (Head-unit) Configurations
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Played music through sub-woofer through same RCA cables between head-unit and subs using phone & adapters: RCA cables = Good; Sub-woofer = Good
Verified no output on head-unit's RCA outputs [(4) & (5) in HEAD UNIT diagram] in all configurations of SP-P/O MODES: Head-unit = Questionable

Head-unit wiring is in configuration 1 & 3 shown above [rear speaker leads are not connected to sub-woofer] [amplifier is built in, so (5) & (7) front/rear/sub are pre-wired into amp]
Metro has 2 front and 2 rear speakers connected through normal factory wire leads in Metro
Sub-woofer is connected to RCA output (4) in HEAD UNIT diagram, and powered via car battery

What am I doing wrong? Shouldn't the head unit just output audio to the RCA when in the correct SP-P/O MODE regardless of head-unit wiring configuration (provided you are powering the unit)?
I have gone ahead and ordered a new head-unit as they don't make this one anymore and although this is a new head-unit (purchased Jan 7th, 2017), I will not be able to use the manufacturer's warranty as it did not come from an authorized online dealer, and amazon's return policy expires after one month (shouldn't have waited so long to get this done :hmm )
Edited by pwp347, Mar 1 2017, 09:39 PM.
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Pioneer head units are known for this. it happens when your plug or unplug the rcas when the radio is powered. A diode fries ..... anywho you can remedy this with a little southern rigging.

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