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Even though you you have already bought one, so it doesn't matter anymore, all of those subs you mention are excellent. Both the RE XXX and the Adire Brahma are very similar subs, they are almost identical. They are both made by Destijl Engineering (the parent company of RE) using...

A sound damping material is not made to get rid of rattles or squeaks. It is made to absorb the vibrations of a panel, to help reduce the noise that is transmitted through it. First you have to find the pieces that are making the noise and then work from there. A rattle is caused when two...

Coaxials can actually have better imaging than components because they act better as a point source of sound. But in a car they can be hard to set up correctly, and with components you can compromise more easily to get good imaging. To add to your list; Image Dynamics makes some excellent...

The resistance of the bolt doesn't matter because like I said before, the screw shouldn't carry any current. The screw or bolt is only to hold the terminal against the cleaned metal surface of the chassis. All the current should flow between the terminal and the chassis and the bolt shouldn't...

There is no reason to use silver or gold plated screws. You should preferably use a bolt or screw with a nut on the other side of the chassis panel to get a good connection. The reason for the bolt is to keep the wire terminal tightly against the chassis; the bolt should not have to carry any...

This is a common myth but is wrong. Smaller boxes will increase the response in the upper bass frequencies and start to become peaky or boomy. As a sealed box gets smaller the Qtc value rises, which hurts its low frequency response and also increases the transient response of the speaker. With a...

For this sub a ported box of 1.25 cubic feet is pretty small, and you should not go under this. Going bigger would be even better, something like 1.5-1.8 cuft. The box has to have an even bigger internal volume than this to make up for the displacement of the sub and the port(s). The space that...

It will not mess anything up. The only difference is that it has a higher current output, the voltage is still the same. However you may have to upgrade the power wire between the alternator and battery. The stock wire may not be big enough to handle 160 amps and there may also be a fusible link...

Since the input power is 12 volts DC, that means that the top of the AC waveform made by the internal amplifier can be 12 volts. The transistors of the amp can only lower voltage, not raise it. Since most headunits don't have a power supply to raise the voltage, that means that the top of the...

The real power output is even less than this. The theoretical max power output at 12 volts with a 4 ohm speaker is 18 watts RMS. This would be with a 100% efficient amplifier which of course is not possible. The max output of most headunits is only about 10-13 watts RMS, even though many say...