Door Speaker in Sedan (and subs)

[Brandon6127]

I dont have the upgraded system so i have 2 questions. 1st - I have 6 speakers and the upgrade has 9. WHere are the other 3 speakers (i know 2 in the rear doors)?2nd - What size are the speakers in the rear doors?

I want a sub in my car but dont want to give up trunk space or have to much bass everything rattles. I am going to try and put in 6.5" subwoofes in the rear doors. Has anyone else done this? I believe it will provide enough bass and sound good too.

[AppleBonker]

I dont have the upgraded system so i have 2 questions. 1st - I have 6 speakers and the upgrade has 9. WHere are the other 3 speakers (i know 2 in the rear doors)?2nd - What size are the speakers in the rear doors?

I want a sub in my car but dont want to give up trunk space or have to much bass everything rattles. I am going to try and put in 6.5" subwoofes in the rear doors. Has anyone else done this? I believe it will provide enough bass and sound good too.

For the sedan, the 9 speaker system has a "midrange/midbass" in all four doors, three "tweeters/midranges" in the dash (one on each side and one in the center of the dash) and two "tweeters/midranges" in the rear deck. The coupe doesn't have rear doors (obviously), so those two speakers are also located in the rear deck.

For the sedan, the the extra Bose speakers in the rear door are the same as the Bose speakers in the front doors (6.5").

With a sedan, your trunk is large enough that you wont have to sacrifice that much space. An extra pair of 6.5" speakers will not give that much more bass. The audible spectrum dips all the way down to about 20 Hz at birth (as you get older the floor rises and the ceiling lowers). The best 6.5" speakers will have a hard time playing anything much below 50 Hz (and even that is pushing it on most). Additionally, you would need to amp those speakers and run the wiring to the doors. Keeping the wiring in the trunk will be a much easier install. I'm not sure what the rear deck looks like in the sedan (I'll check out my coworker's on Monday if he'll let me), but you might be able to get something as large as a pair of 8" woofers in there (which would work much better than in the door).

[Brandon6127]

So then your basically saying that the 6.5 wont do hardly anything. Where are you talking about putting the 8's? I have an amp. I was going to wire up to the 6.5's in the doors. I have heard cars with 8's and they sounded great inside. I just dont want alot of rattles. I have 2 12's and i really wanted a side mount box but that has to be made from fiberglass and i cant find anyone around here to do that at a reasonable price. I had the doors free of speakers so i thought why not fill them with 6.5 subs (since that the size of them) Thought it might help.

[AppleBonker]

So then your basically saying that the 6.5 wont do hardly anything. Where are you talking about putting the 8's? I have an amp. I was going to wire up to the 6.5's in the doors. I have heard cars with 8's and they sounded great inside. I just dont want alot of rattles. I have 2 12's and i really wanted a side mount box but that has to be made from fiberglass and i cant find anyone around here to do that at a reasonable price. I had the doors free of speakers so i thought why not fill them with 6.5 subs (since that the size of them) Thought it might help.

You've already got 6.5s in the front doors. If they're not providing enough bass, another pair probably wont help a whole lot (even my 6.5s - I think now cost over $600/pair - don't have nearly enough low end). Unless you're looking to spend WELL over that amount, it's gonna be tough to get more bass with that small of a driver.

It might take a little work, but you could remove the stock 6x9's and install some 8's in the rear deck (you might even be able to fit 10's in there). All that would be needed is potentially a little bit of cutting to the sheet metal of the deck (a dremmel could probably bore this right out). Obviously, the right choice of woofers would be needed, since this would essentially be an infinite baffle (IB) design.

IB - similar to running a speaker free-air. The size of the enclosure (in this case the trunk) is so large that it doesn't really act like a speaker in an enclosed system. That is the general idea.

[banshee08]

I would recommend the 8" also. I will cutting the sheet metal also in my Altima Hybrid to mount a pair of 8s since I don't have any trunk space at all. . If rattles are the concern then spend sometime to put some sound deaden material on the deck at the very least.

What is a good IB speaker?? I plan to do 8s in my deck but have yet to decide on the woofer. I was thinking about the Dynaudio MV170 but Since doc is going with the kickpanels I am in search for woofer options.

Thanks,

Chan

[AppleBonker]

I would recommend the 8" also. I will cutting the sheet metal also in my Altima Hybrid to mount a pair of 8s since I don't have any trunk space at all. . If rattles are the concern then spend sometime to put some sound deaden material on the deck at the very least.

What is a good IB speaker?? I plan to do 8s in my deck but have yet to decide on the woofer. I was thinking about the Dynaudio MV170 but Since doc is going with the kickpanels I am in search for woofer options.

Thanks,

Chan

What kind of budget are you looking at for your subs? There are a number that would work ranging from under a hundred to about $500 (obviously, the more you spend the better SQ you'll be able to achieve).

[banshee08]

$500 would be the max. I already got the tweeter, Mid, and 7" for the fronts. So now looking for the 8s for the rear deck. IB subs are not very popular..

[AppleBonker]

$500 would be the max. I already got the tweeter, Mid, and 7" for the fronts. So now looking for the 8s for the rear deck. IB subs are not very popular..

Any chance you can fit tens in there? Not sure if the deck is large enough or if you can cut an opening that big. If so, you could get away with just one probably. The Image Dynamics IDMAX is a sub that comes highly recommended for IB mounting. It's pricey, but it's an excellent sub.

[banshee08]

I don't think 10s will fit not enough room to work with since the 244V battery is down below the rear deck and there is not enough cutting room since the trunk springs things are close by. I wish Image Dynamics still made the IDQ8s. I perfer 8s since they are much quicker and I don't really get down to the low low frequencies with the music I listen to. What do you think of the Image Dynamics ID8V.3-D4 or the Dynaudio Esotec MW 172

http://www.woofersetc.com/inde...=2644

http://www.woofersetc.com/inde...=5554

[AppleBonker]

I don't think 10s will fit not enough room to work with since the 244V battery is down below the rear deck and there is not enough cutting room since the trunk springs things are close by. I wish Image Dynamics still made the IDQ8s. I perfer 8s since they are much quicker and I don't really get down to the low low frequencies with the music I listen to. What do you think of the Image Dynamics ID8V.3-D4 or the Dynaudio Esotec MW 172

http://www.woofersetc.com/inde...=2644

http://www.woofersetc.com/inde...=5554

Tough call. I really like both companies (they both make phenomenal products IMO). My comparison of the two would go as follows:

The dynaudio will almost certainly hit cleaner, but I don't believe it'll dip as low in the frequency band. The ID8 should hit a bunch lower than the Dynaudio, but might not be as clean. If it were my car, I'd probably lean towards the ID8. The Dynaudio esotec will work VERY well in a 2/3 speaker front stage setup, but will not function as a "subwoofer" as well. Since you are looking for bass, I'd hit the ID8. In my opinion, I think the Dynaudio driver you referenced works best with a 12" or so sub in the trunk taking care of the really low frequencies. Take that for what it's worth. Just my two cents.

[banshee08]

Funny, I wonder if I should try doing both. One on each side of the rear deck. I am leaning towards the ID8s right now. And I would save a good chunk for the AMPs.

[AppleBonker]

Funny, I wonder if I should try doing both. One on each side of the rear deck. I am leaning towards the ID8s right now. And I would save a good chunk for the AMPs.

I'm not sure if that is joking or serious, so I'll address it. Do NOT run two different types of drivers over the same frequencies. In many things, this might work out by giving you the best of both worlds. On the audio side of things, this will only make both sound worse. It will essentially point out the flaws in both drivers and not give you any benefit.

As I said, I don't want to take anything away from the dynaudio speakers you mentioned as they are great speakers. However, for your particular application, they are not the ideal choice. I think a pair of ID8's would work very well for you and what you are looking to accomplish. What are you thinking about amping them with?

[banshee08]

Yeah good point about using the both of them. I think I will go with the ID8s or may be some IDQ8s if I can find them used. Power wise I already decided on the amps you recommended. I am going with two PDX 4.150. I want the ability to run a active crossover later on. I will just run all the amps in bridge mono for now.

[AppleBonker]

Yeah good point about using the both of them. I think I will go with the ID8s or may be some IDQ8s if I can find them used. Power wise I already decided on the amps you recommended. I am going with two PDX 4.150. I want the ability to run a active crossover later on. I will just run all the amps in bridge mono for now.

IDQ 8's would be nice if you can locate some (that might be hard), otherwise the ID8's will still sound excellent. And sorry about the amp question. Too many people upgrading stereos and I keep forgetting who has taken me up on any of my recommendations.