Question about Rockford Fosgate FNQ1404 Car Speaker

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Subs need to know how to connect fosgate subs to one another and then the amp

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Re: subs


First of all you need to check if your amp can support this type of speaker setup? If you are simply going to wire 2 subs up to the amp (assuming a 2 channel amp) it's pretty simple. Just connect the + & - cables to one channel of the amp & the other ends of the cable to the sub, making sure that they are the correct polarity on both sides (ie speaker & on the amp).
If on the other hand you want to 'daisy chain' the subs onto one channel of the amp (this effectively drops the load down to half that of the speakers (usually 2 Ohm)), then you do as the name suggests. Simple connect one speaker cable to the amps channel 1 + ve output to subs_1 +ve input. Then from sub_1 -ve connector to subs_2 +ve. This leaves you with only 1 more to connect sub_2 -ve back to amp channel 1 -ve.

NOTE: make sure that your amp can support this first! If it can't then it's will auto switch off in most cases but can also damage the amp if there is no fail safe circuit built in.

Posted on Dec 28, 2007

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Make sure the GAIN on the amp is not all the way up it is not a loud button. your amp should be tuned to your subs with the GAIN or on some LEVEL. if they are not matched you will clip the amp and subs and blow them.Is it in the proper sized box? is the amp able to run the sub at the ohm it needs to be run at and do you have the the ohm load correct on the sub. there is a lot to it. if your not familiar with it go to youtube and watch some videos there is some good vids there and will help you learn to wire a sub correctly i have enclosed a link easy to use.
Rockford Fosgate Woofer WiringWizard

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Hi, Make sure the connection are correct + to+ and - to -.
Also make the same connection to your amp + to + and - to -.
Make sure that your amp can run the subs, wattage and ohms.
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I just needed some help with wiring my p8002 rockford amp to 2 fosgate 10 inch subs i just bought. there 4 ohms a piece and dual voice coil. i dont know much about car stereos but people keep telling me...

Well i tried looking up that amp, but Fosgate sight is down. So assuming that the best power out of your amp is 2ohms off the bridged hookup, and the subs are 4 ohms per coil, the best way is to only use one side of each speaker and hook it straight the the bridge. Only using one hook up wont hurt anything, its just for giving you wiring options. And when adding up ohms of speakers, it goes like this. If you had two 4 ohm subs, that'll give you a 2 ohm load. If you hooked up all your hookups, it would be like having four 4 ohm subs, and would give you a 1 ohm load.


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what kind of amp fosgate was bad for blowing the fuse inside check to make sure all your wires are connected and no breaks

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1 Answer

I need to wire up a rockford fosgate punch hx2 12" subwoofer to a 500 watt single channel amp and i need to know how to wire the dual voice coil properly ??

Wire it in a series. One wire from amp positive to one positive speaker terminal. One wire from amp negative to negative speaker terminal. This should leave one positive and one negative termianl on the sub. Use one additonal wire to connect these two, this wire should not be connected to anything else other than the two remaining terminals. This will allow you to have the music up louder with higher amp settings without having to worry about blowing the speaker as easily.

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1 Answer

Why does my 6x9 amp drop or not let the sound play at all when my subs are on? it just started to happen? they worked together fine before. i turn the subs off and the 6x9 work? but when i turn the subs on...

You probably have too much hooked up for the size of your power supply which is presumably a small car battery. You either need to get:

A) New, better bigger battery.
B) Capacitor in series with battery.
C) Both of the above.

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No sound coming out of the subwoofer not blown either what could it be?

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Subs not working.

blown sub if it sounds liek a cracking, with sub off, gently press the sub in, if you hear noise, its dead

Sep 23, 2009 | Car Speakers & Subwoofers

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