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My speaker wire and - wires made contact and now my car amp wont play my subs, it is a 4 channel amp and after trying the other and - channel i get sparks. The amp is a rockford fosgate p1002 and it is out of warranty. The 4 fuses are not blown. What could be wrong and how expensive would it be to repair. PS. The amp shows power just no output to subs, Thanks

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You have fried the mosfets.
A thumbs up would be greatly appreciated if this answer is helpful to you. my speaker wire   - speaker-wire-zb4bomd1rt4qms0dqd12kkt2-3-0.png

Posted on Dec 20, 2014

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Open the case and see if anything looks blackened or burnt. May have blown a transformer or something. Had an amp the other day that melted the circuit board. I don't know for sure without looking at it but probably cheaper to buy new amp. You could have someone look at it

Posted on Nov 15, 2008

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I got Sony Xplod XM-ZR704 700W 4/3/2-Channel Car Stereo Amplifier and 12" sub. it play good for continuous 2 hours but after that starts tripping and goes on off. i checked all wires and connections.


Amp is probably over heating. Make sure the ohm load of speaker is good for that amp. This amp is not really built to handle a bridged 2 ohm load. Make sure ground wire is clean and tight to the body chassis.

May 18, 2012 | Sony Xplod XM-ZR704 700W 4/3/2-Channel Car...

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PIONEER 300 WATT CAR STEREO AMP WIREING HOW TOO


depending on how many channels the amp is, you may not be able to hook everything up to it.

usually you have a separate amp for subs. 4 channel amp for the speakers in the car, and a mono amp for the subs.

To hook them all up to the same amp you would need an amp with 5 channels. It wouldn't work out right.

If you have a mono amp its only for subs.

If you have a 2 channel you can either hook it up to the rear speakers or bridge them to mono to run the subs.


you need a channel per speaker basically.

Dec 15, 2009 | Pioneer DEH-P2000 CD Player

1 Answer

Is there a wiring diagram for the nikkai EAPA450 Amp


Hi, if you still need a photocopy of instructions email me mail@srands.co.uk

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me mail@srands.co.uk

Dec 01, 2009 | Car Audio & Video

1 Answer

Wiring Speaker to amp


remove all speaker connections to your amp. MAke sure the inputs are driving all 4 channels, and that the built in crossovers on the amp are all set to full range. Conect your full range speaker to each output channel one at a time and verify there is oputput on all 4 channels. If all is ok, then connect your rear speakers to the front(a) outputs of your 4 channel amp, and then use the second 2 channels (rear or B) bridged to drive the sub. Re-configure the crossovers for highpass for front (to drive your rear speakers) and lowpass for sub. This is the proper way to connect a 4 channel amp with a sup whle driving 2 full range speakers.

Jun 10, 2009 | Car Audio & Video

1 Answer

2 car subwoofers, one doesnt play


Short in amp ? try swiching wire's to speaker's around . if other speaker then work's , speaker's are both fine . if not , then short in amp , or blown channel in amp . get new one or find someone who know's more than i do about amp's

May 24, 2009 | Kicker CVR12 Car Subwoofer

1 Answer

2 10 kickers not playing. . .


Hello zqueliz,

It's possible that the sub is blown, but it may be something else. You did not specify how the subs are wired to the amp, how many channels on the amp, or whether or not the CVR's are in separate enclosures. These specifics will affect how you isolate the problem.

1) Check all of the wiring: RCA's from head unit to amp, speaker wiring from amp to sub. Make sure there are no breaks in the insulation and that the wire does not come in contact with another wire or metal parts on the vehicle.
2) Remove the nonworking sub from the enclosure and check the wiring from sub to terminal inside. While you have the sub out, check the "braided" wires going from the sub terminals to the cone.
3) Reverse the wiring from the amp to the subs to see if the problem moves to the right sub. That will tell you the problem is not in the sub.
4) If the left sub still fails with the amp channels flipped, you find no wiring defects, and you can't see any physical damage, test the sub voice coil with a multimeter. Set the meter to read "ohms" on the lowest scale. The actual reading should be a little less than the rated impedance. If the subs are 4 ohm, the meter should read about 2-3 ohms. If the meter reads "0" (pegs) or if it reads "infinity" (no reading at all), the sub voice coil is bad.

Hope this helps.

Apr 29, 2009 | Kicker CVR12 Car Subwoofer

1 Answer

Amplifier loads


Hello ronnieyannon,
A single 4 ohm speaker wired to each channel, like you have them wired, presents a 4 ohm load. And it appears that you have them connected properly. The 401s is only stable to 4 ohms when bridged, so if you were to parallel the 2 4 ohm subs in bridged mode, the load would be 2 ohms and the amp would most likely overheat and go into protection.

I'd wire them the way you have them wired.

Each channel of the amp outputs only 100 watts into 4 ohms. That is adequate for regular full-range speakers, component speakers, mid-range drivers, and even some small subs. But it is a little low on power for most subwoofer applications.

Hope this helps.

Apr 22, 2009 | Rockford Fosgate Punch 401S Car Audio...

1 Answer

How do i bridge 3 subs to a 4 channel amp


My information shows the XM-1652Z as being a 2-channel amp. It will not be stable below 4-ohms in bridged mode. For best power, your subs will need to be 2-ohms with all 3 wired in series. This will present a 6-ohm load to the amp. After wiring the subs in series, connect the positive speaker wire to one channel (+) and the negative speaker wire to the other channel (-). For the 1652Z no other wiring is necessary. For subs you will also want to set the LPF (80Hz) switch to the "ON" position (to the right).

Keep in mind that the rated output is only 400 watts RMS at 4-ohms in bridged mode. That's kinda wimpy for 3 subs. You would probably obtain better results from two 2-ohm subs, each connected to a separate channel. That way each sub would be getting 200 watts RMS, still low but there's lots of good subs that will sound pretty loud with 150-200 watts

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1 Answer

How can i get a 2ohm load outta 2 4ohm dvc subs can you show me how to wire the amp as well it says on the amp its 2ohm stable


A normal wiring setup to produce a 4-ohm load is what you usually see - each speaker is wired to one channel of the amp. This is series wiring. To get a 2-ohm load, you need to wire in parallel. Here's how:

Take sub A and wire the positive terminal to the positive terminal of channel 1 on the amp. Wire the negative terminal of sub A to the negative terminal of channel 2 on the amp. For sub B, it's the opposite - positive terminal of sub B to the positive terminal of channel 2, and the negative to the negative terminal of channel 1. That's parallel wiring, and will produce the 2-ohm loading (and subsequent increase in output) that you're seeking.

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600 watt 4 channel bridgeable mosfet power supply jensen amp


Swap the wires from one speaker to the other to see if it is the speaker or the Amp/wires. 

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