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Reload Thread: New system ,no sub response, please help!

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    New system ,no sub response, please help!

    So have the amp and sub installed and nothings coming out of the sub? I have power to amp,the lights are on, its a mono system, I've double and triple checked the wiring and its correct,have the remote gain lit at the dash,I've tried 2 head units,same,I hooked up another speaker to amp to rule out bad sub,nothing,the HU is set correctly to sub mode, only thing I can think of is no low level outputs from HU or amp isn't putting out,fuses are good all around,everything is new except the Head units,both power the rest of speakers just fine,have my son helping and he's scratching his head to! how can I test the HU sub output? any Ideas? see anything in these pic's?
    Attached Thumbnails Attached Thumbnails New system ,no sub response, please help!-img_1684.jpg   New system ,no sub response, please help!-img_1682.jpg   New system ,no sub response, please help!-img_1685.jpg   New system ,no sub response, please help!-img_1689.jpg   New system ,no sub response, please help!-img_1690.jpg  

    New system ,no sub response, please help!-img_1691.jpg   New system ,no sub response, please help!-img_1695.jpg   New system ,no sub response, please help!-img_1686.jpg  







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    Re: New system ,no sub response, please help!

    Back of HU,every other function works perfect on both Head units.
    Attached Thumbnails Attached Thumbnails New system ,no sub response, please help!-img_1687.jpg  




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    Re: New system ,no sub response, please help!

    just to test with - do you have a mp3 plug cord with rca left and right on the other end ? walmart usualy has them for about $7
    then you can try going directly i pod to rca L and R on the amp to rule out headunit output.
    altho i pod usualy has low signal streingth so you might need at least 3/4 volume setting on i pod to get any good signal streingth to amp.

    its how i test my amps for function on the home work bench.



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    Re: New system ,no sub response, please help!

    Quote Originally Posted by brian84corvette View Post
    its how i test my amps for function on the home work bench.
    I do the same thing, haha




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    Re: New system ,no sub response, please help!

    Great idea,I might have one,or get one at work. weird that both HU could have bad sub outs?




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    Re: New system ,no sub response, please help!

    entirely possible - and also possible you have a bad rca cord ?



    brians ghetto burb of amazing and cheap and loud build log
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    Re: New system ,no sub response, please help!

    Ok,hooked the Ipod directly to amp and I can hear it at the sub so guess I'm not getting sub out at HU,both of them? Hmmm.now what? both say on schematics they have it,both pioneer units from 2009




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    Re: New system ,no sub response, please help!

    Full Featured and High Performance
    The DEH-P5000UB is smartly designed to expand your system, customize your experience, provide superior sound quality and easy operation.

    3 RCA Hi-Volt preouts for adding on external amps and speakers simplify system expansion.
    Two-Way Crossover with separate High and Low Pass settings.
    Built-in MOSFET 50 W x 4 amplifier for excellent sound quality, minimal distortion and efficient power handling.
    Supertuner® IIID advanced analog and digital processing assure superior imaging, less distortion and noise, and stronger, smoother broadcast signal reception.




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    Re: New system ,no sub response, please help!

    I think the sub out is in off mode,will mess with it some more,crazy Pioneer.




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    Re: New system ,no sub response, please help!

    Quote Originally Posted by brian84corvette View Post
    entirely possible - and also possible you have a bad rca cord ?
    I tried another RCA cord,same with it hooked up to deck




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    Re: New system ,no sub response, please help!

    Will inspect the back panel for bad solder at the low level jacks ,hey how about a low line converter if the sub output jacks are bad,just tap into a working speaker,anyone use one of those? here's one

    The RF-HLC4 is a 4-channel high-level to low-level signal converter designed for factory or aftermarket radios that do not have dedicated low-level RCA outputs. The adapter converts high-level signal from the radio's speaker line and transforms it into a safer low-level audio signal. This allows you to add a 4-channel amplifier to your system for higher power output and better sound quality.
    General Features:

    4-Channel High-to-Low Level Converter
    High-to-low signal converter to connect 4-channel amplifiers to radios without RCA output
    Output Voltage: Up to 3V (low-level)
    Mounting: Behind dash
    Signal Output:
    Front Left and Right RCA jacks
    Rear Left and Right RCA jacks
    Signal Input:
    Front Left & Right +/- leads
    Rear Left & Right +/- leads
    Front & Rear ground leads
    Dimensions: 3-1/2"W x 3"D x 1"H
    1-year Sonic Electronix Warranty


    Rockford Fosgate RFHLC4 4-Channel High-to-Low Level Converter
    Attached Thumbnails Attached Thumbnails New system ,no sub response, please help!-rfhlc4.jpg  




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    Re: New system ,no sub response, please help!

    All I need is one channel,this is cheap?
    Scosche LOC80 2-channel line output converter at Crutchfield.com




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    Re: New system ,no sub response, please help!

    My son just read this in the manual,specs,maximum power output of HU,50wx4
    50wx2/4ohm +70wx1/2ohm(for subwoofer)
    what is that?




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    Re: New system ,no sub response, please help!

    Still can't get Sub working, put in a CD same,here's my schematic,only thing I can figure out is both of my HU have bad SW outputs??? strange???




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    Re: New system ,no sub response, please help!

    Have you tried a dmm on the sub outs of the hu's? I believe they are 4v (ac) for that model. You could also run the dmm on the amp output (speaker) to see if you're getting voltage out.



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