Protection light won't stop blinking/ Subs don't work
Just installed this amp into my car. I know that nothing's blown because it has worked for a few minutes. But now everytime I turn my car on the protection light justs blinks and I get nothing out of my subs. Wiring is all good, everything is brand new. Any ideas would be helpful.
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The amp is going into protection mode because one or more of the output transistors is fried inside. You want to check for resistance on all the outputs. I repair these everday. Either have it repaired or do it yourself. I buy broken amps and I also repair them. Let me know if you want to sell or repair or want instructions on how to repair it.
Sounds like you have an issue with the amp, the install, or possible blown subs.. check, test and if all else fails get the amp serviced or get a new amp.
A good car audio shop can also help you check it over.
might have roasted your speakers voice coils a little which may be sending the amp into protect mode throw a speaker on it that you know works and if it doesnt trigger the protect circuit then you probably have a blown or almost sub.
I've got a pair of these MTX's subs powered from a Fusion 450 watt 2-channel amp. For the price, they are great. By the way, they are 4-ohm.
My first suspicion would be that something in the first incorrect wiring damaged either the amp or the subs. Can you explain specifically what the "installing the subs incorrectly" means? Was the amp output shorted out at any time or was it operated without a load? Either of these conditions will fry an amp and sometimes, the protection circuitry doesn't work either.
First make sure that your amp is still working. Check both the primary power fuse, usually located near the vehicle battery, and the fuses on both sides of the amp. Make sure that when you turn the system on, the power light comes on steady (blinking is protection mode). Test your subs one at a time on a speaker output.
the output is blown. It is in need of service.
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause.
The red light means the amp is in protection mode. A few things can cause protection mode.....
First disconnect the subs completely from the amp, and turn it on, if it powers up you have blown subs.
Also try checking the main power wire at the battery...sometimes the current your meter is seeing is backfeeding from the remote wire, so your main power line could be blown at the fuse under the hood.
hope this helps