Question about Car Speakers & Subwoofers

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Fusion amp . the green light is on but when i turn the volume up the red led light is flashing but gleen led is still on and sub goes a quiet bass sound .

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First your need to make sure that the amplifier is grounded properly. And verify that all other connections are as well. Unfortunatelly, i wouldn't be able to help you because i need to be in front of it to troubleshoot. Hope you fix it.

Posted on Nov 13, 2008

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I have a clarion m 309 radio and I'm trying to hook up a fusion FM 402 amp for a sub woofer. I had all speakers playing but, I could not control the volume of the sub with the radio. I need to know...


Amps usually receive their signal through RCA wires. Your radio should have one pair of RCA outputs on the back. (red and white) You will adjust your subwoofer volume by adjusting the gains on the amplifer (little knob next to the RCA inputs of the amp), then you can turn up the bass on your radio.

Sep 06, 2011 | Clarion Car Speakers & Subwoofers

2 Answers

I have got the Fusion FJL-1211 Class D Amplifier.When i turn the music up the amp switches off and back on until i reduce the volume and it plays fine.


your overloading the amp and its going into protect mode. turn the bass down on the deck or adjust the controls on the amp itself. get lower power rated sub(s) or more powerful amp since you won't be able to push the sub(s) you have with that one since the sub(s) is/are pulling too much power from the amp.

Aug 18, 2010 | Fusion Car Speakers & Subwoofers

1 Answer

My sub has all bin wired up proberly the sub works for about 30 secs then the green light goes out and no power to the sub at all


Green light on amp?? Seems like your amp is going into thermal overload. Check your power connections, and make sure there are no shorted wires. Hope this helps.

Apr 21, 2010 | Fusion FEW12PK Car Subwoofer

1 Answer

Subwoofer not getting max bass


try using a ohm meter and if its not making what the factory specs are its most likly it will keep loosing more and more power then stop working which is what ive had happen to me before

Mar 11, 2010 | Fusion RE-PK2120 900W Bass Pack: Amplifier...

1 Answer

No sound from subwoofer Solo Baric L7


check the resistance of the sub with a digital multi meter, make sure you dissconect the sub from everything before you check the resistance, if your sub is supposed to be 4 ohms than it should be between 3-5 ohms, if it is under 1 that the sub is blown, while the sub is dissconected from the amp, turn the system on, does it still go into protection?

Jan 17, 2010 | Kicker Solo-Baric L7 10'' Car Speaker

1 Answer

I have a fusion sub and amp and have no instructions on how to wire this can somone please help ive got green wires red wire and a small thin blue wire


Hello nicole_murra,

The green wires are for signal input to the included amp and should be connected to a pair of RCA preamp outputs on your head unit. The thin blue wire connects from "remote" on the amp to a switched 12V output on the head unit (usually blue or blue/white). The red wire is for power and goes through the fuse to positive battery. You also need to connect the amp terminal marked "ground" to the metallic chassis of your vehicle, within a distance of about 1/2 meter or less. There's usually a short piece of wire with black insulation included in most amp wiring kits. If your Fusion sub did not come with such a wire, you can use any wire that is the same gauge (or bigger) than the red power wire.

Hope this helps.

Sep 08, 2009 | Fusion FEW12PK Car Subwoofer

1 Answer

Bass goes off when i turn up the volume


You need to install a heavier gauge wire to your amp and a capacitor. It works fine at low volumes because there is enough wattage from the battery to power the bass output of the amp but at higher volumes the amp does not have enough power.

Heavier gauge wire supplies more poer, and a capacitor stores a reserve of wattage for the amp to use so that it does not run out while blasting your tunes.

Jun 02, 2009 | Fusion FEW12PK Car Subwoofer

1 Answer

Subwoofer Trouble


Turn the bass gain all the way down., Turn up your your volume on bass test song. Crank up the little box next to the steering wheel wide open . Now go gradually turn up the bass gain on the RF amp until you get distortion. Turn the gain down slightly. Now you can enjoy playing the bass from one end of the little boxes setting to the other without ovrloading your amp and subs. Open a can of whoopass on anyone who tries to crank up on your gain.

Nov 09, 2007 | Car Speakers & Subwoofers

6 Answers

Speakers cut off when bass goes up...


it might be that your wires from your amp to your subs are too thin. since they were relatively new the first three months, they were probably undamaged, but after pushing them too much, they probably have broken wires, and can't get enough power to the subs when turned up, i suggest getting thicker wires before investing in a capacitor, it could save you money.

Mar 21, 2007 | Sony Xplod 1100 Watt Max 10" Subwoofer,...

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