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Single sub preout but two needed - Car Audio & Video

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Buy a set of special rca connectors.... 1 "female to 2 male". Buy two...hook up your rcas coming from the radio to the female sides...POOF!!!! Your line levels (rca), 2 channels become 4. Bestbuy or walmart sell them....Even some auto parts stores.

Posted on Oct 06, 2010

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Where should I plug in my sub woffer


There should be two jacks on the back that say SUBWOOFER in the "preout" section of the back panel that is directly above the speaker jacks. Either of these jacks should work for your sub hook-up. Also make sure that you set your front speakers to small in the speaker setup menu, otherwise there will be output to the subwoofer jacks.

Dec 27, 2012 | Pioneer Elite VSX-52

1 Answer

I have a Kenwood kdc-mp342u car cd player installed in my truck. I have subs hooked up to it and everything was working fine until i had to reset my radio and when i reset it the "sub Level...


Subwoofer output: Hold the (AM-) button down for at least two seconds. You can do this function when "SWPRE" in is set to . The SWPRE (Switching Preout) Switches the preout between rear output ("R") and subwoofer output ("SW").

Nov 10, 2010 | Kenwood KDC-MP342U Car CD Player

1 Answer

I just installed a kenwood dnx7140. Everything is


Have you checked to see if the sub amp is turning on. Check to make sure you have at least 12 volts on your power as well as your remote turn on (Blue/White on radio harness).
If everything is hooked up correctly, it is possible that the preout is turned off. Some headunits have selectable preouts. If so you should be able to turn the sub on and off in the menu.
Hope this helps
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Mar 08, 2010 | Kenwood DNX7140 Car GPS Receiver

1 Answer

Rca preout not putting out anything after amp/subs are hooked up and ready to pound


On most Pioneer's, there is an option in the main menu that allows you to turn the sub-out on or off. This must be on to let a signal pass from the head unit to the amp. Check this, and if it is on, try replacing the RCA cables. Let me know if this helps :)

May 25, 2009 | Pioneer VSX-D557

1 Answer

Cant get bass, fuse is fine


You don't say if you've configured the Receiver to know you have a subwoofer (under Multicontrol - SUBW YES). Unless it knows about the Sub it won't send anything out that single "preout". You can get an RCA splitter to run that single output to both inputs in the Sub.

Just as an experiment, temporarily run one a pair of cables from the REC OUT to the Sub's inputs and tune an FM station to prove the Sub amplifier is alive. If it's still silent, it's dead. If there is sound (muffled) you need to go back to the Receiver to figure out why the Sub Preout is signal-starved.

May 16, 2009 | Kenwood Audio Players & Recorders

1 Answer

Pioneer DEH-P3000IB... Hook up RCA cables to 2, 2 channel amps for front and rear control. Supposed to be able to set rear to either rear full or sub... can't find how and all I'm getting is sub response.


Here are the directions according to the manual:

1 Use MULTI-CONTROL to select
SW CONTROL.
2 Press MULTI-CONTROL to display the
setting mode.
# Press BACK to return to the previous display.
3 Press MULTI-CONTROL to select the segment
you wish to set.
Press MULTI-CONTROL repeatedly to switch
the segment in the following order:
REAR SP (rear speaker setting)—PREOUT
(RCA output setting)
4 Use MULTI-CONTROL to select the desired
setting.
Turn to change the setting.
When REAR SP (rear speaker setting) is selected.
REAR SP:SUB W(subwoofer)—REAR SP:FULL
(full-range speaker)
When PREOUT (RCA output setting) is selected.
PREOUT:SUB W (subwoofer)—PREOUT:REAR
(full-range speaker)
# When no subwoofer is connected to the rear
output, select REAR SP:FULL.

Hope this helps.

Oct 13, 2008 | Pioneer Audio Players & Recorders

2 Answers

Very low ouput from subwoofer preout


The problem was that some subwoofers (inluding my velodyne model) cannot process the LFE signals through the line level inputs on its amps, so the other way to run your subwoofer is to run the front left and right speaker outputs from your receiver to the speaker-level inputs on your sub, and then plug your front and left speakers into the soeaker level outputs on the sub. you have to set the onkyo receiver to "Subwoofer: No". that way the LFE signals are sent through the front speaker channels and you will get the same BASS output as if using the line-level input. O So yes it does require a bit more speaker cable, but it works fine now.

Mar 18, 2008 | Onkyo TX-SR304 Receiver

2 Answers

The subwoofer preout is not working


does sub woffer have speaker wire in and outs run the fronst throw ther back up to front speakers pass throw it that would work

Jan 06, 2008 | Yamaha RX-V2700 Receiver

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