How do i hook up a POWERED sub to an old kenwood av reciver 5 channel suround(kr-v8540). It has RCA pre outs. can i get the signal for the powered sub from the pre outs. Or is there another way to hook up the sub.

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Unit apparently has problems. Check/replace batteries in remocom

SOURCE: how do IHook up for Surround Sound on a Kenwood Receiver 6 channel

download the manual from this link. It will show you how

http://www.retrevo.com/support/Kenwood-VR-407-Receivers-manual/id/480ag200/t/2/

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Hook it up just like any basic DVD player. Run the 3-headed RCA connector as follows to your receiver:

Red/White Audio Out to Audio Left and Right of (you choose one unused):
Tape 1 Play
Tape 2 Play
Video 1 Play
Video 2 Play < preferred

Yellow Video Out to: (you choose one unused)
Video 1
Video 2 < preferred
or
Video In on your TV

SOURCE: Kenwood 107VR rec and No vol from Sub Output w/ menu Opt On

In the setup menu are the speakers set to large or small? On some receivers if you have it set to large all the bass is directed to the right-left fronts.
On my pioneer receiver if the speakers are set to large the sub-pre-out only works if the receiver is in a surround mode, if its in stereo mode and the speakers are set to large the sub-pre-out is dead. If the speakers are set to small the sub-pre-out works all the time.
Also, some receivers won't send a signal to the sub-pre-out if there is no LFE discreet signal info from the dolby digital or dts bitstreem.
For example I have several older dvd's that light up the L C R SL SR icons on my receiver, but don't light up the LFE icon. I have other older dvd's that just light up the L and R icons meaning they are only recorded in stereo like a vhs tape recorded in dolby surround.
In my basement I also have a kenwood dolby digital receiver.
I've noticed that when a dvd only lights up the left and right icons the pioneer will automatically switch to dolby pro logic surround. The kenwood will only send the signal to the left and right fronts (stereo). If I manually switch it (kenwood) to dolby pro logic I'll get sound from all the speakers just like the pioneer, but it does'nt do it by itself.
Most receivers that have a tape monitor won't work in surround mode with the tape monitor on. The pioneer will let me use the tape monitor with dolby pro-logic but won't pass through a dolby digital signal with the monitor on.
Hope this helps.

SOURCE: Connect a Sony SA-W3800 powered subwoofer to a kenwood receiver

Yes. It needs to know you have a subwoofer or it won't send low frequencies out to one. Then you have to calibrate its level to match the rest of your speakers. Hit the SETUP section in the manual (available at retrevo.com).

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