Question about JVC TH-M55 System

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The subwoofer lites but no sound

On a sp-pwm65 system, the speakers thru the subwoofer work and the lite on subwoofer work but no sound thru subwoofer.

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Have you gone into the menu settings and adjusted the sub woofer volume, some factory settings are set @ zero.

Posted on Jul 25, 2009

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1 Answer

Can i hook up two 3 ohm subwoofers to the rt2500


Using 2 3ohm speakers in parallel is not advisable on this amp. 1.5ohms is too much of a load on the final. Use the speakers in series if your going to. (+) sp (-)(+) sp (-)

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Rtd315w wont do any thing,i plug it in and the blue lite comes on push power or open lite goes off and nothing works no display and sometimes a taping sound from speaker/fuse seems ok


If its under the 1 year warranty call 1800 252 6123 and they will do it no charge with any type proof of purchase, if over the 1 year they charge 45.00 maximum! and will repair it or replace it if it cant be fixed, then ship it back with a 1 year warranty, takes 4 weeks aproximately

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I have the sub woofer and two sp-thc5f front speakers. Can I hook this subwoofer directly to my JVC 56 high def big screen or do I need a dedicated amplifier that works this sub wooofer?


No, the powered subwoofer gets its signal AND power through the DIN connector so you'd have to second guess JVC engineers on which pins are power or signal; and what voltage level it supplies and then you'd have to come up with a source for the power. Managing the volume and relative levels would be a trick, too. Devastation lies down that path.

Get the prescribed JVC electronics or go with a whole new sound solution.

Jan 16, 2011 | JVC THC5 Home Theater System with 5-Disc...

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Hey, on my LG Blu-ray I have with surround sound, it plays thru all 5 speakers and the woofer perfectly when watching a blue ray disk, however when I watch anything on satellite, regardless if it's a...


You already said the Blu-Ray is working, so let's assume it's ok. Other source(s) don't produce surround so that leaves it (them) orthe one place they all come together - your receiver / theater system. Multichannel sound will only come from properly connected digital sources. Is that the case?

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JVC Home Theater System M505 The subwoofer will not come on and it appears that the system (speakers) will not work at all until it runs thru the subwoofer system.


Wiggle on the long round cable connected to the Sub woofer. If the SW turns on, open it and solder the connector or change the connector

Jan 18, 2010 | JVC TH-M505 System

1 Answer

JVC sp-pwm606


Hello, it,s very possible that it,s circuit protector built in to the sub (if it,s a self powered sub) gets to the point of overload and shuts off as a protection so that the speaker won,t get damaged and also so the internal amp tha,t pushing the speaker sound is also protected since theese amps all have heat buildup, their are two types of subwoofers ,They are the powered ones and the ones that are powered bt the surround amp ,The ones powered by the stereo surround amp/tuner tend to throw out less power to the sub and the ones that have internal power are mostly higher powered , Another thing you might want to check is your polarity to the speakers and also the omage , Most home theater system speakers are 8 ohm,s but their are speakers and amps that can be changed to 6 ohm,s ..so you might want to check the speaker rating also . Well hopefully you can use theese different methods to at least troubleshoot and discount the thing,s that are not the issues , Good luck and hope theese sugestions might help you , Sincerely Glenn

Mar 01, 2009 | JVC TH-M505 System

5 Answers

SP-PWM505 subwoofer does not stay on


Well i had exactly the same problem, my sub turned off right away when i turned the whole thing on. Well i opened the subwoofer and was trying to find out something unusual, i took out, i believe, internal amp, well, whatever that thing is, under the lid. Which one is screwed with 6 copper screws, so you unscrew those screws, lift that lid and that whole board comes out. On that board i find something like burn around one of the parts.

http://www.flickr.com/photos/28004328@N04/3333561417/in/photostream/

you can see it in the pick, the part q2902, then i contacted JVC. At the beginning they said i need to take the whole thing to service center and so on. But later i made them to tell me what kind of part that is, so here :http://www.jvcservice.com/store/ProductDetail.asp?Part=KTC3199/GL/-T
bought soldering gun in home depot for $15, returned after i was done. And that is it, just have to replace it, but total cost only $12 ($5 part +$7 shipping)

May 15, 2008 | JVC TH-M505 System

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JVC TH-L1 problems....no sound


Almost the same problem. HDMI connections good, sound and video through monitor (LCD TV) , but no sound from the JVC unit speakers.

Dec 29, 2007 | Home Theater Systems

2 Answers

No sound, subwoofer or speakers


Er so you plug the speakers into anther system and they work? Blindingly obvious but there is no fault with the speakers.

Oct 06, 2007 | Panasonic SC-HT730 System

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