Free Air Sub in 2008 G35X

[morris2]

I have replaced my OEM Speakers with component speakers and am now looking for a sub. Does anyone have any suggestions on using a free air sub in the rear deck cut out for the bose system? (I don't have the bose system but the cut out is there.) Looks like the cut out is about 9 1/2 inches, not a lot to work with but I will only have 150w to drive it. I'm just looking to add some more bass not blow anyone away. I know free air is not the best route but it is all I can go with at this point.

Thanks

[joe603]

Look at the reviews for the subs...not sure what's good. Crutchfield is a good resource

http://www.crutchfield.com

[morris2]

Thanks, I will look around.

Is there any one out there that can help me with removing the cover on the rear deck to access the speaker opening?

[suby01]

my suggestion you wont get much if anything from that free sub. what i recommend or im planning is getting a infinity basslink. its a small 10" self powered sub all you do is run a power wire and tap into the speakers and its set. hope that helps. its about 200 bucks.

[C-Kwik]

Free air really sucks if you don't do a decent job of isolating the trunk from the passenger compartment. Or more importantly, separating the soundwaves from the front and rear of the sub. With the length of low frequency waves being rather large, you have to make sure they do not meet again before it reaches your ears. As the waves produced by the front and back are exact opposties of each other, they will cancel each other out. Consider how easily bass is heard even with a sealed enclosure inside your trunk.

While the trunk does provide some level of isolation, there are a lot of holes in the read deck and even through the back seat that can allow the soundwaves to from behind the sub to get through. The more that gets through, the more your bass output will be reduced. It can be a lot of work to try and plug up as much of the sound leak as possible. Even if you can get an air-tight seal between the trunk and passenger compartment, the lower frequencies can have long enough waves that it can make its back way into the car from outside the car.

My thought would be to find a sub that can work in low volume boxes and perhaps build the box to hang under the deck in the open spot. You might have to choose a smaller sup, or perhaps one of the shallower subs, but it would likely yield a more predictable sound output and reqire less power for a given level of sound.

my suggestion you wont get much if anything from that free sub. what i recommend or im planning is getting a infinity basslink. its a small 10" self powered sub all you do is run a power wire and tap into the speakers and its set. hope that helps. its about 200 bucks.

Powered subs are convenient and perhaps decent, but if you consider the cost of a good comparable sized sub and amp you have to question the quality of components that go into it. The target audience is of course the more budget minded, but depending on one's level of audiophilia, it may be a huge compromise. Its probably still an improvement over having no sub, so it may be worth a look, but if highest quality sound for the money was important (not necessarily volume or SPL), then I'd look to a component set-up.