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Anonymous Posted on Sep 02, 2014

Home subwoofer no sound

Micro90 PV has no sound no matter how I hook up the wires. The speaker cone is good, it passes the 9v battery test, cone move in and out. I think something on the amplifier side is the problem. How do I go about test the amp side of the subwoofer? What tools should I use? What basic test should I perform?

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master zee

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  • Contributor 57 Answers
  • Posted on Sep 07, 2014
master zee
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Joined: Oct 03, 2011
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Always 1 speaker per amp output!!! and between red and black only. You can send any signal into a subwoofer. Hi frequencies will be quiet but it's safe. switch a normal speaker for the sub and listen, you should hear a muffled sound. Look for the sub output on the amp... do you need to switch on the sub manually somewhere?

5 Related Answers

Anonymous

  • 440 Answers
  • Posted on Feb 11, 2008

SOURCE: Subwoofer will not work when connected

cheak setting in sterio out put for sub on ect does woofer have sperk wire going in and out use them then ok

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Anonymous

  • 7 Answers
  • Posted on Jul 13, 2008

SOURCE: Subwoofer Line In/Out Mix-up

I had a problem with no audio and I recently found the fix. When the sub still worked and you turn it on you hear one relay click and then about 5 seconds later a second relay clicks and the audio comes on. The problem I had lies with that second relay. When you take the case apart there are 4 circuit boards. The big board with the two big blue capacitors is the main board. Well next to the two blue capacitors is a blue relay. That relay had a pin that came un-soldered from the circuit board. I re-soldered that pin and the sub works just like new. If you go here http://www.eserviceinfo.com/downloadsm/20627/sony_sawm500.html you can find a free service manual that has the wiring schematics for the amp. Hope this helps!

Anonymous

  • 5 Answers
  • Posted on Dec 16, 2008

SOURCE: loud humming buzzing sound coming from subwoofer

make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

Anonymous

  • 51 Answers
  • Posted on Dec 27, 2008

SOURCE: Brookstone Wireless Outdoor Speaker with Bose 123 System Problem

AUX usually refers to an INPUT, such as a CD player, etc. No signal comes out of a standard AUX jack, unless it specifically says "Aux speaker output". Instead, look for another speaker output jack, such as remote speaker, B speakers, etc. You may only have one set of speaker output jacks, in which case you would need to connect your wireless speaker to the speaker output jacks along with your main speakers, or buy a little speaker selector switch box to switch between main and wireless speakers. There's usually no harm in connecting more than one speaker set to the same outputs, though it is technically not recommended. In the real world, just don't crank it too loud and you'll be fine. The wireless speaker MIGHT run off of a standard line output also, if the wireless speaker has its own power amplifier.

Anonymous

  • 1199 Answers
  • Posted on Dec 28, 2008

SOURCE: speaker wire to coaxial cable

Yes ! all you have to do is go to radio shack and tell them you want a coaxil to RCA adapter (screw coaxial into wallplate and plug RCA end into sub and your all set!)
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1answer

Audio problems. The rear speakers sometimes work, sometimes don't and the driver side door never works. I don't know if it is the wiring or speakers.

A good way to test speakers / wiring is to use a 9v battery. Unplug leads from the deck and jumper the 9v + and - to the speaker wires and see/ listen for the speaker cone to move. With this simple trick you can trace problems pretty quickly
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Testing speaker

You might try taking a C or D sized battery and two short pieces of wire. Hook each wire to the speaker. Then touch one to the top of the battery and the other to the bottom and see if you get the same response. This test works good if you have a speaker that isn't really marked pos and neg to find out which is which. If the speaker cone moves outward, it's in correct phase. If it moves backward, it's connected out of phase. I've never tried a 10 inch speaker with this trick so, if nothing is happening, you might try a 9 volt. It might take more juice to move that larger driver.
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My speaker stop workin and the amp is fine and everything is hooked up right

Looks like the speaker is blown , or the wiring inside the speaker is broken. To test if the speaker is working, simply hook up the terminals to the ends of a AA, AAA or C battery. Speaker should make a noise, and the cone should push outwards ( or pull inwards, if the polarity of the battery is reversed). Also test the wires that are hooked to the amplifier with a speaker that you know is good working order, just to make sure that there is nothing wrong on the wiring, on that particular channel in the amp.
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I just bot Pioneer speaker CH26861...4 wires to 2 leads...

I would tie both + from the speakers to the radio, and both - as well. This will give an equal amount of power to both speakers and reduce the chance of blowing a speaker. As for +&- on the speakers, It is usually marked on the black piece right by the terminals. As little power as you are putting to the speakers, it doesn't really matter which way you hook them up, as long as they are both hooked up the same.
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I need radio color codes for a 2001 fordranger

The simplest way to figure out wire colors on the ford is to purchase the radio wiring harness from a stereo shop like a Metra or Scosche harness and match the aftermarket wiring color code to the opposite side (vehicle side) of the radio plug. If you are just replacing speakers, then removing the speaker from the car with the plug attached, you can easily figure out polarity. Just connect a 9v battery to the speaker leads on the speaker (NOT THE CAR) for a second will make the cone either pop out or **** in. When the cone pops out, note the polarity of the + on the 9v battery. This is the positive for the speakers. Hope this helped.
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Wiring

1st make sure your amp is coming on. Use another speaker that you have heard play to test it.
Next test the woofer with a 9 to 15 volt battery. Touch the battery leads quickly across the + and - on one side at a time. The speaker should move and make a pop on both voice coils.
If the amp plays and speakers play, then you need to know the power rating and impedence stability of both amp and speakers. That will determine how they are wired up.
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Rattle Problem w/ subwoofer

See the rear cone, spider and voice coil junction at rest and when cone is manually lifted outward/forward.Then you can easily tell if the spider has separated, as there is little pressure needed to move the cone manually, in and out of the gap. Compare that pressure to your good sub. If there is a notable difference in physical pressure to move either cone, you can rest assured that the spider is not moving or providing resistance to cone manipulation. This is a sure sign of spider/coil joint failure and can easily be sees as you conduct these tests. If that is what you see then repair it or change with new one
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Jl subs not powering

Connect each speaker coil one at a time to a square 9 volt battery and watch for the cone to move.

Also try hooking another speaker to your amp just to make sure it isn't in the amp.

You can use a 9 volt battery to test wire polarity also. Hook up the + wire of the speaker to the + terminal of the battery and the - speaker to the - battery terminal. If the speaker moved UP or OUT then the wiring is correct. If it moved IN or DOWN then the + and - wires are backwards on the speaker.

Also if you have two or more speakers hooked together test all the same way while they are hooked to each other. ALL of the speakers need to move in the same direction at the same time.

Clipping causes more speaker damage than anything. "Dirty Power" can happen in good quality amps too. The gain control is to match the voltage between the headunit and the amp. It is NOT a volume or boost knob. If you overdrive the first stage of the amp and then clip it damage will occur to the amp and speakers at some point.

Hope this helps.
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