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Car amp will not send power to subs?

I have power going into the amp, good ground, good wires, but the amp will still not power up?

Posted by s_a_m_jr on

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  • 6 Answers

1-check polarity 2-on in power you have power? 3check fusibile from inside

Posted on Apr 06, 2010

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1helpful
2answers

XA10002 dual channell amp pushing a single 12 inch JL Audio sub and continues to go into protection mode. All setting are turned to the lowest possible and remote wire, power wire, and ground wire are all...

Make sure you are wiring the sub to the correct ohm's. Some amps have a protective feature that will send them into protect mode if they do not since the right ohm load. If the sub is wired correctly double check your ground wire on the amplifier, and if that if also fine then your amp will need serviced.
0helpful
1answer

My amp keeps cutting out the subwoofer... I checked all the fuses and the wires and everything checks out good do I need a capacitor?

Your problem is probably that your amp is starving for power. I have a few questions. 1.What size wire are you using for power and ground on the amp? 2.Whats the impedance of your Sub-woofer? 3. How long are the power wire and ground wires.
For starters... I'm going to guess that you usually lose the subwoofer at lower frequencies. The lower the frequency the more power it requires to drive the sub. You also might want to check if you are running the amp bridged but mainly if your amp is trying to push a 50hz tone at high volume, If your alternator cannot provide the required Amperage. The amp will cut out. A capacitor can improve this. Run a power wire from the battery to the positive terminal of the capacitor then from that same terminal run a positive wire to the amp. Connect the ground on the capacitor directly to the body of the car...make sure to scrape off any paint to make a good ground connection.
0helpful
2answers

Amp wont turn on and theres power to the amp and the fuses are good

check the ground to the amp. then check the remote wire. make sure u have the sub option on ur stereo turned on. if all is wired up correct an u do not have the subs turned on in ur stereo settings then the stereo will not send power through the remote wire an therfore your amp will not power on.
0helpful
2answers

My amp keeps going into protect

do you have the right size ground wire, relative to your power wire? If your ground is smaller when you turn it up there is alot of power it needs an exit and if the wire is too small it travels elsewhere maybe your rca, causing your amp to protect.
0helpful
1answer

The car is all wired the power is good the ground is good the amp work and i have the sub turned on with the nob but the sub doesn't work it has a 800w rms amp and two 400w rms subs mtx 7500

You could have the subs wired in the wrong ohm. It might be turning off the amp and check to make sure that you rca cables from the head unit to the amp are connected right.
0helpful
1answer

My sony sub isnt working, i checked the wires

do you have a power on signal wire hooked up?
1helpful
1answer

Wiring issues

ok here is how it goes power wire from the battery all the way to amp..then ground wire from amp to a good ground on car then the remote wire which you have to run from the amp to the back of your stereo which in most cases is blue then hook subs from the sub box to the amp
0helpful
2answers

Power good no green light no subs

Make sure you got a good ground. do not ground on painted surfaces! If you got power from battery, check the remote wire running to cd player. Hook up remote blue wire with the one for cd player. If you still have a problem and the fuse is good, then the amp is fried
0helpful
2answers

Car Audio (amp over heating)

The problem would be if you had it switched around. The 1200W subwoofer only means that it can handle 1200w of power the 1000w amp means that it can deliver 1000w of power. What you may have is an impedance mismatch. My question is what is the resistance rating on the sub woofer and what is the minimum resistance rating of the amplifier. These are actully the important issues at hand. the rating of the subwoofer resistance in Ohms should never be lower then the minimum resistance rating on the amplifier. in fact the resistance rating on the amp should match the resistance rating on the subwoofer.
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