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Schematics The amp fpr the sub-woofer has gone bad and I need a schematics to repair it. Can anyone point me in the right direction?

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Sub woofer not turning on

Is it receiving power? If not that is your answer - could be a blown fuse, bad wire, bad connection, etc.

If power is there and it still does not work then the problem coud be with a bad sub woofer on/off switch, internal fuse, or worse, blown amp from over driving.

Feb 25, 2016 | Boston Acoustics MCS 90 Horizon Series...

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When system is turned on, the subwoofer light comes on and then goes out.


Just check out the cables connected to the woofer first... Guess its an electronic issue ..

Jan 08, 2008 | JVC TH-C60 System

1 Answer

Sub woofer and rear speakers cut out

Check the speakers with an OHM meter to be sure that they are not bad. Switch the speakers so that the front is the back and see if the issue goes away. If it does not then it is the amp. It could be the temp sensor or overload sensor

Jul 29, 2013 | Panasonic SC-HT920 System

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How to install MT-7 mclaren surround sound speakers

dose the sub woofer hooked up to the t.v.

Jan 27, 2012 | Home Theater Systems

1 Answer

I have a sony HTDDW7600, i cannot get the dedicated subwoofer amp to work. The fan is running on it, but for some reason the only way i can get it to do anything is to unplug the cable that goes from the...

You have a very good 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) 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..

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
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
• 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.

Jun 23, 2011 | Sony MUTEKI HTDDW1600 Theater System

1 Answer

JVC TH-C5 Solder 8 pin to sub circuit board

The best solution I could give would be to go on E-Bay and type "8 pin DIN" into the search, and just buy one. I just did. The price is higher with longer lengths, but it's worth NOT messing up the subs built-in amp by getting the pins wrong.

Sep 01, 2009 | JVC TH-C5 System

3 Answers

I was given a Sharp HT-DP3000 reciever and all the speakers that go with it.. but I don't know how plug in the speakers into the wire there is a box for the two surround and a separate box for the right...

Do you have speaker wire if not you will need some, the wire is cheap about $5 bucks a roll your local department store will have it. You see a red and black tabs on the back of the unit and on the back of each speakers you push down and stick one wire in the hole. red will be your + and black will be - The two surround go on the back wall behind your seat.The center will sit on top of TV and the sattalite speakes go beside the left and right side of TV. and the sub sits on the floor in hidding behind something or under a table. (P.S, Make sure the wire is shaved about 1/4 of inch before you stick in the wire DO NOT plug the power cord in, intill you hook up all the speakers this could damage the unit. You do not need a sub woofer, if you have one great If not don't worry that will not damage the unit it has a internal switch to turn on/off the sub woofer The sub woofer offers extra deep bass that you can't get from the sattalite speakers.)

Aug 31, 2009 | Sharp HT-DP3000 System

1 Answer


Either the amp for the sub is bad, or the sub woofer speaker is bad. If you checked the fuses, you must know how to get the amp out of the sub woofer box (screws in the bottom of box and around the metal plate of the box). Take it out again and check the wires that go to the sub woofer. It is the red and white wires if I remember correctly. They come from the box and plug into the amp board with a white plastic connector. Or you can check the wires right at the speaker. The cover for the speaker comes off with about 4 phillips screws and then take the speaker out with the screw driver as well.Use an ohm meter and check the ohms on the speaker at those wires after you dis-connect them from the board. That woofer should measure between 3 and 6 ohms to still be good. If it measures less than 3 ohms or more than 6 ohms, it is probably bad and will need to be replaced.

Here is the JVC part number for that woofer.


Be prepared, the cost is ridiculous. $110.16 at JVC's service site.

Or you could just find one that fits properly and use it instead. They are not the best woofer around and are very over-priced.

I hope this helps, if so a FixYa! rating would be very much appreciated. After all, it is the only reward we get for offering free help to people like yourself.


Aug 12, 2008 | JVC TH-M606 System

1 Answer

HTS 6500/37 sub woofer

the reciever should have a "subwoofer level" setting, or a "bass level control" If you cannot find this then try to place the "sub-woofer" away from walls and elevate it from the floor. This will reduce it's loudness/ intensity at annoying frequencies...

Good Luck

Jul 25, 2008 | Philips HTS-6500/37 System

1 Answer

JVC THR1 DVD Digital home cinema system.

There is other Cinema Surround systems that use the same 8 Pin setup Aldis had one retailing at £49.99 and there are plenty on E-Bay will provide schematics for these systems so you can select the right one.

Jul 17, 2008 | Home Theater Systems

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