Question about Car Speakers & Subwoofers

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READING A CAR AMP FOR OUTPUT

Can anyone tell me if a multi mteter can be used to read the speaker output connections to see if they are working or would i have to try a speaker conected to the output to check its opperation.My sons cars base (subs) wont work and we are not sure if its the speakers , amp or ???. all connections and fuses are fine, and the sytem is only weeks old. I have a multi meter but am not up to speed on what i can use it for....or how. THANKS

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  • GRANT Jun 12, 2008

    okay i will if i can work out who to ask. If anyone is watching this can they give me some help. It may just be the external switches and settings on the amp but i dont want to start playing with something I know next to nothing about.

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My father does these kinds of things and has done them for over 30 years. I'd have to give him a call. Can you please ask someone else? Thanks and sorry.

Posted on Jun 11, 2008

  • Ekse Jun 12, 2008

    http://www.fixya.com/users/benimur



    benimur has car audio listed as hes first expertice, check with him.



    I can also talk about your problem with my father later today, but ask benimur, il bet you get a faster answer from there.

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How do i hook up my Aiwa 90 watt self powered subwoofer to this Onkya A-8037 stereo amp there are only two auxiliary ports in the back and both are used by the stereo.


Your powered subwoofer should have two different pairs of inputs - one is a line input that is connected to a subwoofer output on your amp. The other inputs are those that are directly connected to the existing speaker outputs on your amp.

When you have all working make sure that the sub output is in phase with your other speakers lest you have bass cancellation.

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I have a pioneer ts-w304r 12" subwoofer with a Dual Xpr520 400 watt amp, and a kenwood kdc-bt742u head unit. everything is hooked up properly. i know for a fact, and the head unit has all subwoofer options...


bad sub or amp. test your sub with a 9-12 volt battery not a car battery!!! more like a drill battery with low amp rating (don't leave power to it very long or could wreck your sub coil). if that work. then test your amp with a working output if you have a friend with a system hook it up in there car to see if it will work. pawn shops test amps tell them you want to sell it and they will test it and then decline their offer. lol just thought of that on the spot.

Mar 11, 2015 | Pioneer Car Speakers & Subwoofers

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How do i install my component


from the speaker outputs of the head unit / amplifier. Connect from the positive and the negative outputs to the respective positive and negative input of your X-over box. Now connect from the X-over woofer/midbass output to the bass driver. Now do the same for the tweeter from the X-over from the tweeter output to the tweeter. Make sure that all the positives and negatives are correctly connected.
If you are going to use your head unit to power the speakers then you should know that:
White & white with black stripe is the Front Left Speaker output
Grey & Grey with black stripe is the Fron Right Speaker output.
Green is rear left
Purple is rear right.
I think you get that the black stripe speaker cables are the negatives.
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Feb 11, 2011 | MB Quart - 5.25" 2-Way Component Speakers...

1 Answer

Hi, I'm trying to install a sub and amp in my 2006 ram w/OE head unit. What wires do I have to tap into to get speaker output? Thanks, Chris


You'll need power from the battery to your amp (you may be able to find a spare one at the head unit), and, using suitably thick wire, connect those to the 12vDC input of the amp.

If the amplifier accepts speaker level inputs, you can connect the amplifier input to the head unit output (maybe use the rear speaker output). At the other end of the amp, connect your subwoofer. If there's only one, use the amp bridged (more power). If you're using two, and your amp has 2 channels, use one channel per subwoofer. When you power all this up, turn the volume up from 0 slowly - if anything sounds wrong, turn it back down and switch it all off. Check all your wires and start again.

Jan 14, 2010 | Kenwood Car Speakers & Subwoofers

2 Answers

Subs quit working its not the amp they were working fine


How do you know it's not the amp?  Have you tried hooking up good speakers to the same output terminals of the amp?

Speaker failure modes: Usually they fry, the foam surround disintegrates, or there's a bad internal wire connection/solder joint that fails. Subwoofers are designed to handle a lot of power and rarely fail.

There are three possibilities: 
1) The signal isn't getting to the amp from the crossover.
2) The amp is toast.
3) The speakers are bad. 

You don't tell me whether you have a separate amp for the subs with an external crossover, or whether you have one amp with internal crossover and separate internal amps and speakers outputs for subs and standard speakers, so I can't be more specific.

What you can do is:

Check all external connections, including the power connections.

Try substituting replacements for the patch (signal) cables to see if you have a bad cable.

Beyond this, it's pretty much up to a repair technician.

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What size speaker wire do i use with the mofo 15 from the sub to the box then the box to the amp


The size of the wire has more to do with the amp's output than it does with the speakers. The wire should be the same size throughout, from speaker to box, box to amp. A minimum of 16 guage multi-strand wire. Most amps that put out up to 500 watts max or have an RMS rating in the 300 watt range should do fine with this. If you want to be on the safe side, there is no limit to how big your speaker wire can be, only how small or a minimum. If you're using a very high output amp, like over 500 watts RMS, you can use 12 ga. wire. If you want to be on target for your size, I need to know what amp you have and how many speakers you have.

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1 Answer

Hello, I have a Kenwood KDC-MP225 powering a KAC-8101D that was pushing 1 Bazooka EL1200, the last amp blew the other 1... I was driving along 1 day and cranked it up before the cd started playing, I...


First off try a different source that you know works that you can control the volume of. (ipod) This will tell you if the amp works. If it still doesn't work try a different speaker that you know works, any speaker will do, just keep the volume down. Second see if running a new set of RCA's helps maybe something got pinched if it still is not working then your head unit line out is bad, try a different output and see.

Thanks,
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Nov 20, 2008 | Kenwood Car Speakers & Subwoofers

1 Answer

When i turn on the cd player the sound from the components vuts off but the sound coming through the subwoofer stays on??


The Sub gets it's output from the pre-amp circuit, whereas the components get their output from the main amp circuit in the unit.

Sounds like it could be a short in the speaker wiring or a blown speaker. Check all wiring to the speakers.

Check all speaker wires from the unit to the speakers.

First check that each pair of speaker terminals at the speaker end is not touching. Or, a wire fell of 1 terminal to rest on another.

Best way to check if it's a blown speaker or a wiring short, is to disconnect all speaker connections ( at the speaker end ) making sure the disconnected wires don't touch each other or any metal in the car. press the reset on the unit and power up. If the unit powers up ok, then its a blown speaker.

Otherwise it's a short in the wiring.

If it's a blown speaker, you can connect 1 speaker at a time and the blown 1 will send the unit into protect mode again.

If it's the wiring, disconnect the unit from the wiring and use and ohm meter to check each pair of cables. A reading suggests a short.

If you don't have an ohm meter a battery and bulb will do. This method usually works on a short.

If you have no joy with either method, take each speaker wire in turn and check with a source of earth (anything metal connected directly to the body of the car, cigar lighter main body when pulled slightly out is good)


Regards

Philip

Jul 20, 2008 | Car Speakers & Subwoofers

1 Answer

Wiring woofers


Well, you have the 4 ohm dvc kickers, and your amp being stable to 2 ohms doesn't go together very well. If you wire the voice coils in series, and hook the speakers to the amp in parallel, you get 4 ohms, which doesn't use all the power your amp is capable of. If you run the voice coils and the speakers in parallel, you'll drop the resistance to 1 ohm, and probably fry the amp, or at least deal with overheating issues. Better be safe than sorry. You need to run each speaker in series, which means running a positive and negative to each speaker, and a jumper from those terminals to the opposite colored terminals on the second voice coil. Diagram can be seen here: http://www.kicker.com/06/tech-support/manuals/manuals/02SoloBaricL7manual.pdf That puts two 4ohm voice coils in series, and raises the resistance of each speaker to 8 ohms. Then, you have to run both speakers in parallel to the amp. When you run two 8 ohm circuits in parallel, the total resistance of the circuit is 4 ohms. That means seperate positive and negative wires to each speaker. If it is a mono amp, connect both negatives to the negative output, both positives to the positive output. If it is a multi-channel bridgeable amp, You'll probably connect the negatives to one side output (right for example) then connect the positives to the opposite side output (left for example). If you need to bridge your amp, make sure it is bridgeable, and also that you have the speakers bridged to the proper amp outputs. If not sure, reply back here with the amp model number, and maybe I can help you further.Thanks, and I hope this solves your problem.

Nov 29, 2007 | Kicker 02S10L74 Car Subwoofer

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