Question about Pioneer Gm-d8400m 1200w Max, Class D Mono Amp Gmd8400m

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Blue power blue is on, what does this mean? no sound to sub, y

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Onkyo skw 591 subwoofer...blue light is on and no sound? any thoughts?


Hello, To test the subwoofer when the blue light is on if you apply your thumb to the end of the subwoofer cable (the end that you would plug into the receiver) there should be feedback from the sub. If there is no feedback then the sub is not working correctly. Thanks, FJD

Apr 27, 2016 | Onkyo Audio Players & Recorders

1 Answer

Cadence 400 watt active sub green light on, no sound from the sub. whats wrong?




proceed according and fix it. However yi\ou must read the diode LED for diagnose. God bless you

Mar 26, 2013 | Exercise & Fitness

1 Answer

How do I hook up a jbl 12 inch subwoffer to a car head unit


The head unit should have a RCA Sub Out. The RCA wire goes to the Sub Amplifier, along with power, ground, and a blue remote wire from the Head Unit. Next, the Sub Amp is wired to the Subwoofer with speaker wire. Without an amplifier your sub won't make any noticeable sound.

Oct 09, 2011 | 1998 Ford Taurus

1 Answer

Power sub woofer is not working on my pioneer vsx-81txv everything is working all the speakers except the power sub connection at the back all i can hear is the hissing sound when i try to connect the sub...


Hissing? How loud? A sub isn't even capable of making high frequency sounds at normal volumes.

The Pioneer manual would tell you how to enable and test the subwoofer output.
Page 17 and the MACCV procedures on Page 33 (auto) or 43 (manual)

Jun 13, 2011 | Pioneer VSX-81TXV Receiver

1 Answer

On my kenwood KAC-8105D mono 1000watt amp, the blue light is out and my subs are not getting any power? What does this mean? what does the blue light mean??


Well normally a light near the controls and or where you put the wires for subs is the continuous power. There is a wire from the back of your stereo that need to be ran to the amp. It tells the amp when to turn on and off so it doesnt drain your battery.

Jun 06, 2011 | Kenwood KAC8105D Car Amp

1 Answer

If my long blue flashes on my amp when my subs hit what does that mean?


It;s not getting enough power. Seriously consider getting at least a 1 farad capacitor. It stores power for when the sub hits and recharges in between. I posted a tip explaining it in layman's terms if you look at my tips for more clarification. Please rate my assistance and leave a testimonial.

Jan 06, 2011 | Kenwood KAC-7204 Car Audio Amplifier

3 Answers

Green light on speakers and sub. No sound - only hissing noise


open volume control & remove check from mute button.

start-program-acessories-entertainment-volume control.

Sep 17, 2009 | Audio Players & Recorders

1 Answer

No sound from my front and back speakers in my van ive got subs


Make sure that when you hooked up your 4 channel amp to the remote turn on lead it is the same as the sub. Only hook amps to the Blue w/ white strip. The solid blue is power antenna lead and will lose power when on CD, ipod etc and only stays powered when the Tuner is on. Hope this fixes your problem.

Jun 03, 2009 | Kenwood KDC-MP428 CD Player

1 Answer

Center speaker and sub stopped working


if the sub was popping that either means the sub is getting to much power and blown that normaly happens when they pop, for the center speaker could check the wires maybe it came undone that could be a possibilty

Nov 16, 2008 | Kenwood VR-606 Receiver

1 Answer

My computer sound system


Most likely the sub has the crossover in it, most likely the 2 input cables from whatever device you want to play through the system will plug into the sub then the 2 speaker cables will come out of the sub and go to the speakers, just be sure to have everything connected into and out of the sub and make sure the power cords for the speakers and sub are plugged in, I am assuming this is a self powered system wich means the amplifiers are built into the speakers and sub.

Aug 07, 2008 | Yamaha 5.1-Ch. Surround Sound Home Theater...

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