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I have woofer JAMO SUB 660. It is not responding. After having the electronic card, i see that there is no 15V/-15 on the preamplifier module. Is there any circuit diagram available?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Jamo Cornet 90 IV Speakers - Woofers need replacement

I had the sub woofer problem what i did was i found the fuse in back of the unit i took it out with a srew driver. I looked in the light to see if the tube had a smoke shot in it and it did then i got some aluminum foil just a tiny piece and put it around the tube and low and behold my unit pop back on what a relief. The foil is for testing only you need a fuses to not cause a fire!

Posted by charles on Jan 12, 2009

Posted on Jan 12, 2009

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SOURCE: circuit diagram of 1400 watt woofer amplifier

www.the12volt.com/ subwoofer wiring diagrams and then find out what ohm of sub u have and how many voice coils and what ohm your amp is stable at.

Posted on Jun 14, 2009

herbalgarden
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SOURCE: locked up sub-woofer cone won't move?

In theory your idea would work, however you risk damaging your amp by reversing polarity and the positive and negative wires from your head unit are low voltage so they wont provide enough current in reverse or normal polarity to free the cone of your sub. but here is something that you can try that is similar in concept.

Take a positive lead from your head unit and wire it to the negative of your sub. Now ground the positive terminal of your sub to the vehicles chassy using a wire. This creates a 12v-14v reversed polarity current that should be strong enough to (POP) the cone so to speak. hope this helps

Posted on Sep 27, 2009

Testimonial: "thnxx should work ttyl "

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SOURCE: How do I hook up a non powered sub woofer on my htr-5630?

You will need an amplifier or 2 channel receiver. Hook the sub out rca jack to the rca inputs on this new amp or receiver and hook the speaker terminals on sub to speaker terminals on same amp or receiver. Your Yamaha receiver doesn't have any power for a passive sub.Just pick up any old fairly high powered receiver for fifty dollars and you're good to go.I use old dolby pro logic receivers as they are a dime a dozen today. Good luck.

Posted on Mar 07, 2010

  • 17 Answers

SOURCE: Kef PSW2010 Subwoofer common problem DIY repair

The relay buzzing fault is caused by a faulty electrolytic capacitor.
You need 47uF 100v 105C radial.
C52 on the corner of the board near some power resistors.

Posted on Aug 11, 2010

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