When i go to the L/O function and select Subwoofer, my subs do not work, even with the subwoofer level and gain at max. When i set the mode to Rear, the subwoofers work to some degree, but not as it should. Any ideas on how to fix this?

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.

I manage to slove to my DPX-U5120 Subwoofer level adjustment. In STANDBY mode, Press the Main Volume button and turn to Setting, turn until you find the SW Preout, Swith to normal mode, its won't work if u switch to REAR

Go back to CD/USB Mode, Then Press the Main Volume and find Audio Adjustment and now u can find the Subwoofer Level , Sub Phrase and Sub LPF adjustment.. Um Glad i found this and Happy Setting

H?,
You have a very good system...one of the best of SONY..SUB does not get activated automatically especially on STEREO mode.DIRECT STEREO Notes • No sound will be output from the subwoofer.
.your system has Dedicated Power Amplifier for 2 Externally Driven Sub-Woofers (200W RMS x 2)..in order to activate the sub woofer amplifier you need to make a selection on the surround modes while you are switching the modes of the surround you will see the speaker position on the display of receiver as well..if you do not see the sub woofer it wont be activated..Sound Field Program (A.F.D) is a good example to test it..
Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)
Hope this helps!
--------------------
Additionally please follow the instruction on your user manual to activate the SUB ,as is follows..
-----------------
BASS-OUT
Low-frequency (bass) signals can be directed to the
subwoofer and/or the front left and right speakers
according to the characteristics of your system. This
setting also determines the routing of the LFE (low-
frequency effect) signals found in Dolby Digital or DTS
sources.
Choices: SWFR (subwoofer), FRONT, BOTH
• Select SWFR if you connect a subwoofer. LFE and
low-frequency signals from other channels are directed
to the subwoofer according to the speaker settings.
• Select FRONT if you do not use a subwoofer. LFE and
low-frequency signals from other channels are directed
to the front speakers according to the speaker settings
(even if you have previously set the front speakers to
SML).
• Select BOTH if you connect a subwoofer and you want
to output low-frequency signals from front channels to
both the front speakers and subwoofer. LFE and low-
frequency signals from other channels are also directed
to the subwoofer according to the speaker settings. Use
this function to reinforce low-frequency signals using
the subwoofer when playing back sources such as CDs.

H?,
You have a very good system...one of the best of SONY..SUB does not get activated automatically especially on STEREO mode.DIRECT STEREO Notes • No sound will be output from the subwoofer.
.your system has Dedicated Power Amplifier for 2 Externally Driven Sub-Woofers (200W RMS x 2)..in order to activate the sub woofer amplifier you need to make a selection on the surround modes while you are switching the modes of the surround you will see the speaker position on the display of receiver as well..if you do not see the sub woofer it wont be activated..Sound Field Program (A.F.D) is a good example to test it..
Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)
Hope this helps!
--------------------
Additionally please follow the instruction on your user manual to activate the SUB ,as is follows..
-----------------
BASS-OUT
Low-frequency (bass) signals can be directed to the
subwoofer and/or the front left and right speakers
according to the characteristics of your system. This
setting also determines the routing of the LFE (low-
frequency effect) signals found in Dolby Digital or DTS
sources.
Choices: SWFR (subwoofer), FRONT, BOTH
• Select SWFR if you connect a subwoofer. LFE and
low-frequency signals from other channels are directed
to the subwoofer according to the speaker settings.
• Select FRONT if you do not use a subwoofer. LFE and
low-frequency signals from other channels are directed
to the front speakers according to the speaker settings
(even if you have previously set the front speakers to
SML).
• Select BOTH if you connect a subwoofer and you want
to output low-frequency signals from front channels to
both the front speakers and subwoofer. LFE and low-
frequency signals from other channels are also directed
to the subwoofer according to the speaker settings. Use
this function to reinforce low-frequency signals using
the subwoofer when playing back sources such as CDs.

It only drives a self-powerd sub.

The manual...

http://www.retrevo.com/support/JVC-RX-8010VBKC-Receivers-manual/id/315dj079/t/2/

Page 17:

Setting the Subwoofer Information

Register whether you have connected a subwoofer or not.

Before you start, remember....

• There is a time limit in doing the following steps. If the setting is canceled before you finish, start from step 1 again.

On the front panel ONLY:

1. Press SETTING repeatedly until "SUBWOOFER" appears on the display.

The display changes to show the current setting.

2. Press CONTROL UP / DOWN to select "YES" or "NO."

• Each time you press the button, the display alternates between "YES" and "NO."

YES: Select this when a subwoofer is connected.

NO: Select this when no subwoofer is used.

Note:

You cannot use SUBWOOFER OUT ON/OFF on the front panel (see page 14) and adjust the subwoofer output level (see below) when "SUBWOOFER" is set to "NO."


Then continue with setting its relative level and other things.

surround and subwoofer may not work if there is an additional graphic equaliser operating.
1. check in your receiver speaker setting ensure your speaker setup doesn not have subwoofer set to NONE. this will block any signal to your subwoofer socket.
2 when you select your surround sound setting setup, ensure you select the speaker mode you want, if there is a multicontrol knob, cycle through the choices
select subwoofer mode and set it to yes.
if you have set-up small speakers S in your speaker settings then it could be that subwoofer is set to yes automatically if you have large speakers L, subwoofer has to be set additionally in the subwoofer setting.
3 test subwoofer on alternative device to test it is working ok
consult manual on enjoying surround sound and adjusting the speaker settings.

Hi, just turn up the gain, though the max voltage may be higher, it does not mean the audible output is higher, alpine decks subwoofer control is an attenuator, so at max it will be the same level as front n rear, on min it is -15db... you will probably find the kenwood is +/- 7db so it has a gain boost...
just crank up the amp gains, problem sorted...

It will power off if the frequency range of the signal being sent to it is set too low, or the amplitude of the signal is too low as well.

Try increasing the subwoofer crossover frequency and/or increase the gain from the LFE/SUB of the receiver/preamp you have it connected to. Also make sure that in the setup menus of ALL of your components have an LFE channel enabled such as by selecting the output of source material of your DVD player for example, to output 5.1. Otherwise, it will not send a signal for the subwoofer to play, nor will it play the signal if the crossover frequency is set too low.

Example; the setting on your DVD player setup menu is set to two channel: result with only one exception, subwoofer will not play

Example; subwoofer/LFE level on receiver/preamp set to -10dB and/or subwoofer volume too low. Result: subwoofer will not play.

Example; subwoofer crossover point set at 35Hz. Source material playing sound at 30Hz and lower. Result: subwoofer will not play.

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.

According to the KLH manual for the 9906 "6 pack" with the BassBite sub... it says "if your sub is connected via the speaker - level terminals, your reciever must be set for "NO" subwoofer - even though you are using one. VErify proper polarity on your speaker connection wires. (red or gold to +, black or silver to -). Depending on how you have your woofer connected to the reciever, if connected to a reciever without a subwoofer out then set your reciever for LARGE speakers and turn the subwoofer setting "OFF". Failure to do so will result in little to no bass. If you do have a subwoofer out from your reciever adjust your speaker size setting to small or large speakers as appropriate. Set the recievers sub output to ON. Connecting small speakers to a reciever set for LArge speakers can result in damage to small speakers.

Hope this helps.