Question about Car Speakers & Subwoofers

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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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1 Answer

2 ohm amp to 2 10 inch dual coil 4 ohm subs how does it need to be wired


Is the amp a single channel? If so, the only way to connect the subs (without overloading the 2 ohm stable amp) is to wire each sub's voice coils in parallel (2 ohm) and then connecting the subs in series (4 ohms). If the amp is two channel, the subs can have their voice coils connected in parallel (as before) and then each sub connected to its own channel.

Apr 08, 2016 | Dual Car Speakers & Subwoofers

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Do you bridge a 850.4 four channel amp when it is 2 ohm stable and ur subs are wired up as series/ parallel and there 2 ohm dual voice coil speakers


If you wire 2 ohm dvc speaker parallel that would give you a 1 ohm load. If your amp is only 2 ohm stable that would not work. You would have to wire the speaker in series giving you a 4 ohm load. Then you can bridge the 4 channels into 2 with each speaker running at 4 ohms.
If you want to run a 2 ohm load use all 4 channels on amp and speakers. No need to bridge.
For 2 ohm DVC:
Parallel = connect both + and - together. = 1 ohm
Series = connect + from 1 channel to - from the other channel. = 4 ohm.

Jul 06, 2014 | Car Speakers & Subwoofers

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Hi, I want to know what is the best way to wire these subs. (Pair). I have heard of several ways. I have a 4 channel amp the soundstream picasso 4.760. Bridged it produces the most power. I was told...


Hello , I will be glad to help you.As far as your speakers..It depends on what impedance your subs are rated and if your Picasso amp can be bridged at 4ohm or 8ohm. If your subs are 8ohm each you can wire your subs in parallel and wire them to picasso amp in bridged mode. If your subs are 4ohm each.Then wire the subs in series then wire them to amp in bridged mode..caution do not wire subs in parallel if they are 4ohm .This would bring impedance to about 2 ohms and would be harsh for amp to handle...Goodluck

Sep 22, 2011 | Planet Audio BB212D Car Speaker

1 Answer

I have 4 wires what do they do I no to of thim will go to my Kicier ame I Ddont no were the other to go


OK, I am assuming that you have 4 wires coming from the subwoofer itself. Your subwoofer has dual voice coils, this means there are two positives and two negatives. Look closely at the posts on the subwoofer and you can tell. These wires will go to your amp, all four of them. Here's the tricky part. You need to know if your amp is a monoblock (single channel) or two channel amp. Also, what ohms is it stable at (4, 2, or 1). If you have a monoblock stable at one ohm, take both positives from the sub and put to the positive of speaker output on the amp. Then put both negatives from the sub to the negative speaker output of the amp. If your sub is dual 4 ohm voice coils, this will give you a 2 ohm load. If you have a dual 2 ohm voice coil sub, this will give you a 1 ohm load. If you amp is 2 channel, just hook one set of positive and negative to one channel and the other set to the other channel. Hope this helps

Aug 28, 2011 | Kicker Solo-Baric L7 S15L72 Car Subwoofer

1 Answer

I have 2 sony xplod 4ohm subs rated 350w rms and 1200w max, i have them in really shallow boxes because i drive a single cab toyota, i know these subs **** but i do also know that they can hit alot harder...


the premier amp is better since it has a better rms rating (360w total or 160w each sub) than the eclipse (280w if you bridge all 4 channels which isn't possible but 140w for each speaker bridging 2 channels per speaker). Neither are going to push your subs but if you get another amp wiring kit and use one amp per sub they will sound a lot better and you could just hook both power wire and ground wires from the bridged channels to the power and ground terminals for the sub. That would be my suggestion since the subs are rated at 350w and each amp is 280w and 320w which will push but not blow the subs.

Aug 17, 2010 | Sony Car Speakers & Subwoofers

1 Answer

Subwoofer buldging out problem


When speakers are wired in the wrong way the will do the "pushing out" you're describing. Basically the polarities have been reversed and if kept like this over a period of time will blow the speaker. Best thing to do is to disconnect the power by the negative on the amp and take out the fuse from the power supply. Check the wires running from the amp to the subs, negative to negative and positive to positive. I know it sounds basic but many people do mix it up! I would also check to see what channels the subs have been wired into?

Best way is to have one sub from channel 1 and the other sub from channel 2 for example. Or if its a bridged 4 channel amp, have 1 sub running from channel 1&2, and the second sub running from channel 3&4 still making sure of the polarities. Again this all depending what kind of amp and sub you have.

-----------------------------
For example;
A 4 channel (bridged) 1000W amp. 250W max per channel or 500W per 2 channels! So if you have 2 500W subs, by connecting one to a single channel will decrease subs ability due to the lack of power supplied. However by combining 2 channels you optimize the output!
---------------------------

Once you know all your wiring from your amp to subs are ok/good connections/good wires etc you shouldnt have to "wiggle the wires" to get it to work as this is just a bad connection. Also ensure that no 2 wires are touching. Make sure that the master volume on the amp is turned down. You dont need this to be on loud at all, in fact far from it or you'll risk damaging both the amp and subs!

Hope this helps!

May 27, 2009 | Car Speakers & Subwoofers

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

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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1 Answer

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Jul 21, 2008 | Insignia Car Speakers & Subwoofers

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