The amplifier light keeps turning off, then on which leaves me with no power for my subwoofer. This usually happens when I turn up the music in my car. The base would go away, then come back constantly until I turn it down. Other times it works fine.

Isolate the problem by testing the subwoofer to make sure it isn't fried. If the problem isn't the subwoofer then your amplifier must be checked at an audio store.

It sounds to me like your amplifier is getting caught in a loop-- the heartbeat is the subwoofer catching a surge of power from the amplifier. Make sure all of your connections are solid. If they are, try using the amplifier in another vehicle that is already set up for an amplifier. If it does not work, you may need to spring for a new amplifier.

Yes, technically you can, however you will be putting both your sub and your amp at risk. One of the worst things you can do to a sub is underpower it. The easiest way to explain it is n ot giving enough power to the sub leaves it starving for power. The motor structure ends up working too hard to try and move the cone properly and what happens is the sub will usually seize up rather than blowing out in the term you usually hear (ie, I had my system cranked up and I blew my subwoofer).

Secondly, in an attempt to get any real sound out of the under powered sub, you'll probably end up cranking the gain and bass boost on the amp which ends up overworking the amplifier quite a bit and can in turn lead to fried out amp chips, burnt up circuit boards etc.

Thirdly, by maxing the gain bass boost you're going to end sending a lot of distortion through your subwoofer in an attempt to get some decent bass. Distortion kills both subwoofers and speakers alike.

So to answer your question, yes you can hook up your subwoofer to that amp and yes, it will probably play for a while but I wouldn't recommend it. Look for a class d or mono block amp to push your sub as these will give you the most power and best heat dissipation. They are designed to push subwoofers specifically and you will get better sound and longer life out of your equipment. A good rule of thumb is look for an amp within 100-150 watts of both your RMS power handling and your Peak power. Remember, when it doubt, always go a little bigger on the amp side of the spectrum. It's easy to "tune down" an amp by having the gain and bass boost at a lower level (50%, 25% etc), than to turn 'em all the way up just to get some bass and end up prematurely blowing out your sub, amp or even worse, both.

What does it mean when the LEDs flash on my amplifier?
With most recently produced Phoenix Gold amplifiers, a flashing/blinking LED is an indication that the unit is in protect mode, usually due to an overcurrent condition caused by an internal short, external short (speakers), or low impedance. Overheating will also cause the amplifier to shut down temporarily.

If amplifier remains in protect mode, power down the amplifier, disconnect the speakers, and power up again. If LEDs continue to flash, there is probably an internal problem with the amplifier that will require service attention to fix.

Most of the time it's 2 things, first thing is a section on the PCB has burned out and this leave you with very little power going to your speaker, This is common by using incorrect wiring or peaking the amp all the time, You can start by pulling the PCB out and looking for any physical damage, If there is some you can solder a connection with copper wire. The second thing is blowing your finals, This happens when one side of the bridge for the PNP NPN transistor section blows out usually on the on position and this can send a dead short to your other final transistor. they will be in pairs of usually starting with A,B,C,D and a number grouping. This is next to impossible to fix.

It means that the subwoofer is blown. The red light is called the Protect light. Disconnect the speaker wire from the amp and then turn the amp on and see if the red light goes away. But if as soon as you hook the speaker wires back to the amp and the red light turns on that DEFINATELY means the sub is blown.

CHECK YOUR SPEAKER SEEM LIKE YOUR SPEAKER IS BAD SO DISCONNECT THE SPEAR AND TURN ON AMP IF THIS DONT HAPPEN CHECK YOUR SPKER

Your amplifier is trying to draw too much current. Your battery doesnt have enough power to run the subwoofers. My solution to the problem would be buying a power cap with equal or more power capasity to your current amplifier. The power cap stores a high amount of current so that when your subwoofers hit those low notes that draw a lot of current, instead of taking it directly from your battery, it will use the stored current from the powercap and wont go into protect mode. Also make sure that your connections on the back of the subwoofer arent touching. If you are hitting hard bass notes and the speaker (+) and (-) wires touch, it will short out and go into protect mode. But I dont think this is what your problem is. I am 99% sure if you go with the powercap, it will solve your problem.

unhook the orange wire and also try the remote wire, rerun that too the amp