Thread: audio 02 grand prix

Originally Posted by eddie97gt

the factory tweeter is a 3/4 inch , i put memphis m class tweets in mine and they fit great , as for letting the pressure on the 6x9 take the rear deck cover off and just take the 4 inch speakers out totally , they dont put out much and it lets the bass wave hit the rear glass and give you about a 3 db gain as opposed to doing nothing and 3 db is a decent amout and it will keep the pressure off the 6x9 .... ill put it this way , works great for my jl 15w3 with a true 1100 watt amp breathe

You're actually creating a bandpass enclosure by doing that and thats not a good thing.

Originally Posted by matt5112

You're actually creating a bandpass enclosure by doing that and thats not a good thing.

What about Infinite Baffles?!

IB Grand Prix Setup - DIY Mobile Audio

Originally Posted by I800C0LLECT

What about Infinite Baffles?!

IB Grand Prix Setup - DIY Mobile Audio

IB's are supposed to be completely sealed and the enclosure for the back-wave is supposed to be rigid enough to not rattle to **** when you actually play some music. Sadly a car's trunk isn't designed to do that so you'd end up with sub par results.

In home audio, its not that big of a deal because you have closer to 10 times Vas instead of car audio where you struggle to achieve 4 times. In the example you showed me, Vas is 281.8 PER woofer... The average trunk is around what, 300-400 litres? That falls a tad short of FOUR times the Vas of 2254.4 litres. 4 times is considered the min, 10 optimal.

Also if you consider a car has a stupid bass enhancing "room gain" curve then a sealed box should be all you really need...