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Kit Scott Posted on Jan 06, 2006
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Connecting subwoofer to receiver.

My receiver has a "Subwoofer pre-out" out. My subwoofer has three possible inputs under "Line Level In." 1. is LFE and the speaker manual says if receiver has LFE or subwoofer out to connect here. 2. and 3. are L and R as in RCA cables. With the cable supplied by the speaker manufacturer, I can't get anything out of the subwoofer using the receiver's Subwoofer pre-out output. If I connect straight from the DVD player to the sub it works fine, but not through the receiver. Why not? Am I doing something wrong? Using a THX optimizer on "The Incredibles" DVD all of my other surround sound speakers work as they should, just not the sub (unless I've hooked it up straight from the DVD player). Thanks for any help

  • bjmcloud Mar 09, 2008

    Exactly the same problem as the previous person. Where would I check to see if the sub option was on?

  • Joe Daniels
    Joe Daniels Oct 26, 2013

    I just bought a kdc 255u and no sub woofer seting on the menu. I guess I'll just take the thing back to the store. Not my first stero. Hear good things about Kenwood, but I'm gooing back to pioneer I guess

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  • Posted on Jan 31, 2006
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Have u checked that the sub option on the reciver is on?

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Related Questions:

1helpful
1answer

Sub-out on Kenwood VR-6060 NOT Working with powered subwoofer

It seems like you've tried various connections and settings to get your JBL135 subwoofer working with your Kenwood receiver, but you're still facing issues. Let's break down the situation and provide some recommendations:
  1. Subwoofer Connection:
    • Using the LFE/Subwoofer Out: This is the preferred method for connecting a subwoofer. Ensure that the cable is firmly connected to both the subwoofer's LFE input and the receiver's Subwoofer Out port. Make sure you have enabled the subwoofer output in the receiver's settings menu.
  2. Subwoofer Settings:
    • Gain: Adjust the gain knob on the subwoofer to achieve the desired bass level. Experiment with different settings to find the right balance.
    • Crossover: Set the crossover frequency on the subwoofer to blend with your tower speakers. Start with a conservative setting, such as 80Hz, and adjust as needed.
  3. Receiver Settings:
    • Speaker Configuration: Set your tower speakers to "Small" in the receiver's settings menu to redirect bass frequencies to the subwoofer. This ensures that the tower speakers are not trying to reproduce deep bass.
    • Bass Management: Enable the appropriate bass management settings in the receiver's menu, which typically includes crossover frequency and speaker size adjustments.
  4. Check Subwoofer Cable and Port:
    • Ensure that the subwoofer cable is in good condition and securely connected to both the subwoofer and receiver.
    • Try using a different cable or testing the subwoofer with another receiver if possible to rule out cable or port issues.
  5. Factory Reset:
    • If you've exhausted all troubleshooting steps, you may consider performing a factory reset on your Kenwood receiver. This will reset all settings to their default values, potentially resolving any configuration issues.
If none of the above suggestions work, it's advisable to consult the user manual for your specific Kenwood receiver model or contact Kenwood customer support for further assistance. They can provide more detailed guidance based on your equipment and setup.
0helpful
1answer

LFE or Subwoofer

Connect the Subwoofer connection on the receiver to the LFE connection on the subwoofer.

The normal connection on the subwoofer is for connecting a full range signal, from which the sub extracts bass via its internal crossover.
0helpful
1answer

How do i make the Sharper Image SA251 Subwoofer Speaker work what do i use as a line level?

I don't suppose they came with a manual.

http://www.spreadmyad.com/san-diego/merchandise/electronics/8242133-sharper-image-subwoofer-san-diego-25

Line level would (usually) be the LFE signal produced by a multichannel receiver. The speaker level inputs would be from the Front L and R speaker outputs.


9helpful
1answer

Conncet a sony sub to a denon reciver

Depending on the model, there are two ways to connect a subwoofer to an amplifier, receiver or processor. The best way is to connect the subwoofer to the SUB OUT or LFE output of a receiver, but some subwoofers can be connected to the speaker level outputs of the receiver or amplifier.


1. How to Connect a Subwoofer to the Subwoofer Output


The preferred method of connecting a subwoofer is through the LFE or Subwoofer output (SUB OUT) of a receiver. Almost all home theater receivers (or processors) and some stereo receivers have a subwoofer output. The LFE (Low Frequency Effects) is a special output for subwoofers and is often labeled 'SUBWOOFER' not LFE. 5.1 channel programs on DVD discs have a dedicated .1 channel output with bass-only content that is best reproduced by a subwoofer. Connect the output of the LFE or Subwoofer jack to the Line In jacks of the subwoofer using a single RCA cable (the two jacks on the left in the photo). A 'Y-Cable' may be necessary to connect the LFE output to both the left and right channels of the subwoofer.

2. How to Connect a Subwoofer to Speaker Level Outputs
Some receivers and amplifiers do not have an LFE or Subwoofer output. In this case you can use the speaker outputs of the receiver to connect the subwoofer. Using speaker wire, connect the left and right channel speaker outputs of the receiver to the left and right channel speaker level inputs on the subwoofer (the speaker inputs on the right side of the photo). Using speaker wire, connect the left and right channel speaker outputs on the back of the subwoofer to the left and right channel front speakers.

Hope it helped..
1helpful
2answers

I have a Boston Acoustics VR-500 Subwoofer with a problem. As soon as anything is plugged into the line level RCA jacks, the subwoofer produces a loud buzz/hum. I have tried connecting it to the subwoofer...

I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.
0helpful
1answer

I have the SB-HW950 subwoofer and teh SC-PT950 speakers and I just purchased a Denon Receiver to replace my DVD/ receiver player. So now I have SC-PT950 speakers playing through the Denon but for some...

Yes, the old Panasonic SC-PT950 did drive the subwoofer by its own amp, such as it was.

http://www.retrevo.com/support/Panasonic-SC-PT950-Home-Theater-Systems-manual/id/2869dj183/t/2/

It's never a good idea to adapt prescribed connectors to bare speaker wire or vice versa.

Speaker Level and Line Level signals are worlds apart and equipment damage may result. Your Denon (model unknown) probably requires a POWERED SUBWOOFER, to which it would provide Line Level LFE from its Pre Out.

Read the manual where it doesn't say to convert a speaker wire to RCA.
1helpful
1answer

I have a velodyne VA 806 subwoofer which I would like to connect to my AV receiver Denon AVR 391. In my receiver, I have a subwoofer out female connector (one) and where do I connect this line to the...

Get an RCA Y-adapter to feed both INputs on the sub. Define the sub in the Denon and set your other speaker settings as required to redirect the bass/LFE if they can't handle it.
0helpful
1answer

No output to the subwoofer using the sub pre out RCA jack.

I'm assuming your subwoofer is self-amplified, otherwise it won't work with a preamp (rca) input.

Under Speaker Setup you have to have Subwoofer set to YES (page 16).

If you have good bass-capable main speakers I would recommend setting the subwoofer playback mode to LFE+Main, otherwise just LFE.

Beyond this we would need to know something more about the subwoofer and its controls.

Connect any other preamp out channel, like CDR/Tape OUT, to the sub and tune an FM station to see if the sub is capable of processing audio. A 'normal' audio signal would sound muffled but it would prove the cabling, amp and speaker at least function and point us back to setup as the culprit.
0helpful
2answers

Which jacks to wire the subwoofer to?

Your receiver should have an RCA connector on the back panel that will be marked "sub woofer" or "LFE out". That connects to your sub woofer with a standard RCA type cable. Also, some powered subs have left and right speaker level inputs and outputs in which you would indeed run the sub woofer through the speaker outputs. The down side of that type of connection is that the line level converter inside the sub woofer will take a slight amount of your receiver's output power, although that is rarely detectable. Also, if you have a Dolby Digital receiver, using this connection method will take away systems ability to accurately control the low frequency effects of a soundtrack.

Good Luck,
BB
0helpful
2answers

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.
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