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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 Audio & Video

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Red and blue light flash on and off


ITS IN PROTECT MODE. EITHER ITS BLOWN OR THE SUB IS TRYING TO PULL TOO MUCH POWER. UNHOOK THE SUB AND SEE WHAT HAPPENS IF THE LIGHTS STILL BLINK THEN AMP IS BLOWN. IF THEY STOP BLINKING AND ONLY ONE STAYS ON THEN LOWER THE SETTINGS ON THE AMP AND TURN THE BASS AND VOLUME DOWN ON THE DECK TO LOWER THE AMOUNT OF POWER BEING PULLED FROM THE AMP.

Aug 18, 2010 | JBL Car Audio & Video

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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.

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Are you sure you don't have any shorted wiring or defective speakers?


Sep 30, 2008 | Jl Audio 300/2 Car Audio Amplifier

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Fusion sub n amp dont work


didi u check ur fuses in the amp..if not there check the fuse under the hood on your power wire.i had the same problem

Jul 27, 2008 | Car Audio & Video

1 Answer

JBL d110 /w no sound output


There is a standby indication that activates after 10-15 minutes without any input signal. I suspect that might be what the red light is telling you - no signal.

Loud hum from a loosened cable is normal as hum usually means there's an ungrounded connection somewhere acting as an antenna and the amp is doing its job to amplify what it thinks is a signal, in this case 60hz stray ac current is being sensed nearby. It's a good sign that you get hum from the sub because that means the amp is alive.

Avoid manipulating cable connections with the Sub or Receiver turned on as you could introduce a static spike that could harm any connected equipment.

Are you certain a bass signal is making it into the sub? The complexities of modern AV receivers vary in how you configure them to direct LFE to a sub. Bone up on that end of the chain.

Or, just hang a CD player on the Inputs of the sub and play something with a reassonable amount of Low Frequencies.

>>>> Be advised that this way of testing has NO VOLUME CONTROL because amps without volume controls always operate at maximum gain, relying on your external controls to attentuate it (hence, the loud hum from a loose cable); so choose a track that eases into the loud parts with some quiet parts up front and BE READY TO PAUSE THE PROGRAM AT ANY SIGNS OF STRESS. <<<<

A living sub will produce only muffled rumble in the absence of other speakers producing the higher frequencies which carry the intelligence of the signal. If that works, back to the receiver for settings. If not... sigh.

-----

For hum problems, even those you cause yourself:

Disconnect all inputs to see if that helps. If it goes away start with the signal cables and add in things until it comes back.

Sometimes the reversing the orientation of the AC plug can help with hum. Or it could be something like a loose or high resistance connection internal to the sub. Good luck.

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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.

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Amp has Red LED light on.


Disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

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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.

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