Hey mate,
Your amp does 900rms x 1 at 1 ohm load. Your subwoofer is dual 2 ohm so wired to 1 ohm, I presume. So with 900watts RMS. sure, any amp will go warm with any given power over time as that is what amps do when driven over a required time. :fro:
I had a look at your amps specs as it does not indicate a thermal shut down, but with a reputable amp like Audison, I have no doubt if it does get too hot, it may go into protection until it temperature drops to normal operating levels. There are many medium to high end amps out there that have this feature. You should not be worried about the amp getting hot unless;
- you have poor grounding terminal either from the amp to chassis or just stock ground that has 8 gauge wire;
- you are running thinner power / ground wiring that is causing the amp to warm up as it requires more current draw; (Dangerous!!! check your amp manual if you are)
- check your 12v resistance with a multimeter to see you are getting a clean reading of the battery voltage from the amp to chassis;
- Upgrade to the big 3, to improve current efficiency;
- The subwoofer box you are using is a large port design that makes your subwoofer more efficient so it does not need that much power to operate at ear bleeding level;
- Or, your subwoofer box is too small so you are over-driving the subwoofer to get the required bass level;
I would also suggest you take the subwoofer out and run it in a 4 ohm load to see if the problem persists, this will make the amplifier work less stressfully as its not always good to run an amplifier to its minimal load, sure you can do it but you are shortening the life of the amplifier by doing so. :uhoh:
Another way of attaining the required boom is to add another subwoofer that will see the amp with 2 ohm load, that way you get 3db more and your amp runs cooler and you have just extended the life of your subwoofer amp. :nerd:
At normal operating level, any amp will get warm but not hot enough for you to fry an egg on top of it!!! If your current amp and subwoofer setup does not satisfy your bass needs to it may be time to upgrade to a larger amp and dual subwoofer setup as more cone area will provide more bass. Don't forget to upgrade your power wires if you do take this approach.
You should not be concerned if you have the recommended power, ground wires and it does not get that hot that you only have a few seconds to put your hand on it before it gets burnt. :graduate: