You are correct in assuming that. Lack of amplifier power causes what you described. Had it done this crackling before the amp/sub setup?
Two ways to go about it; full range amplifier for the doors or an aftermarket radio. If the radio is not heavily integrated into the car's other systems, I would change it out. Otherwise the amp is your easier and more economic option.
The radio that I have in it now is factory so I'm assuming it's pretty integrated. I have an 1500 watt amp to go with the sub if thats what you're talking about when you say "the more economic option". I'll most likely have to get the factory replaced with an aftermarket one. I just need to find one that will look right because all of the ones I've seen so far would totally throw off the dash as far as visually, any suggestions???
What I meant by this is does the radio control any air conditioner options, have steering wheel control, does warnings of open doors. When OEM radios have these options, the integration interfaces are usually expensive.
On this I meant a four channel amplifier instead of a new radio. Since you already have the power wires in place, integrating the four channel would not be as hard. Most technical part would be running the speaker wire to each location.
