Hi,

I was thinking of maybe installing a single 10" sub to the passenger rear compartment but then as a alternative I am wondering if 8" subs installed to rear 6x9" compartments would work??? It would make a nice hidden sub installation.

I estimate that the volume of these boxes is about 0.37 cubic feet +-10% (10 litres), what do you think? Is there any 8" sub that would work in such a small sealed enclosure?

I have 2 options for amp to use in this:
1. 4-ch. RMS @4ohm 4x40W, bridged 2x100W
2. 2-ch. RMS @4ohm 2x30W, bridged 1x100W

If I would install the twin 8" subs, which one do you think would suit better for subs and which one for the front separates?

Thanks,

Toni

 

The 8s might work but:
They won't go as deep frequency wise as a 10
There won't be a location for rear speakers
It would cost more as you need more amp and two speakers instead of one

 

> They won't go as deep frequency wise as a 10
Ok, I've never heard what 8" subs sound like. Do they sound like subs or more like mid bass? My present sub is a 10" in a reflex box, do you think I would be disappointed with 2 x sealed box 8"?

> There won't be a location for rear speakers
IMO they are not really needed in a 2 seat car. Rear speakers are mostly for rear seat passengers. Ok, they add a little depth but I believe that with decent front separates and a sub(s) I should be happy.

> It would cost more as you need more amp and two speakers instead of one
So you think neither of my amps is strong enough to feed 2 8" subs? I need to upgrade?

Specs are in my post above. They are both Alpine V12 amps.

I don't want to spend a fortune but I am not on a minimum budget either, I have about $1.8K-2K invested in this present equipt. And I am willing to sell some and buy some new if they suit my Vette better. My main wishes are: good sound quality (i am no pro) and hidden installation, max sound volume is not important.

Thanks,

ToniH

 

I think you would be disappointed with the 8s. They won't go as deep as a 10 or 12. I usually tell people who like to go deep but don't want as much sound to get a single 12 and people who want to thump the neighborhood and don't need to go to deep to get a pair of 10s. 15s are a little to large, take up to much room and loose some sound quality. 8s can't hit the low notes like their bigger brothers. For good sound quality, I'd get the single 10 in the sealed box behind the passenger. Maybe a JL Audio 10W3 would work well for you. You want to be able to run about one channel of 250w @2 ohms to power a decent sub. I don't know if your amps are set up to do this or not. I agree that you don't need the rear speakers. Front seperates and a sub sounds fine. I had this setup before in a mustang I had. But I do like some rears for the fill sound. I keep them low enough they don't hurt my sterio imaging but they do make the sound more for lack of a better word surrounding. Hope this helps.

 

O.K., I have to give my 2 cents on this one. I also have two two 8" subwoofers in the stock locations in the back of my 92. they work great and produce plenty of bass.

How "deep" they play has very little to do with driver size. Yes, I know I am going to start something with that statement, but hear me out. Keep in mind any speaker can play at 20hertz. The cone just has to move at 20 times per second. the key is will it move enough air to hear/feel it. Now, bigger drivers to have a little edge in that they have more surface area to push more air. Although, two 8's have more surface area that one twelve. That is just one factor.

The enclosure has a TREMENDOUS amount of effect on how well the woofer reproduces sound. I really good 8" driver in an optimized enclosure will reproduce bass much better than a low quality 12" in a poorly designed enclosure. If you are going to use them, find two 8" drives that can work efficiently in that small of air space. I used a/d/s/ for my system. You get the wrong drivers, they will sound awful. Talk to the guys at http://www.madisound.com. They really know their stuff. They could help you find the right 8" driver for your application.

One more thing, make sure you have plenty of power for your drivers. using them in a selaed enclosure like the back speaker compartments will take a lot more power than running them in a port enclosure.

I won't bore you with more details, but I just wanted to say if you get the right drivers with enough power, you would be very surprised what type of bass you can reproduce with the two 8" drivers. Granted you won't win any db drags, but if can sound pretty darn good listening to music in the car.


Scott

 

Scott,

Which 8" A/D/S speakers are you using in the rear compartments? Also any pictures or advice for the enclosure there?

 

I'm using the old s8's. Although, I owuld prefer to have the s7's if I could find them. I think they would be a better fit. I did put dampening material in the enclosure to help smooth out the response.

Scott

 

i've got two kicker solobaric round 8s in my daily driver, with a junk lightning audio amp, and they hit low enough for any rap, techno, or other crap that i've tested on it. they sound great with everything and are able to hit low enough for me. if you look, ubid.com recently had solobaric round 8s new, and they were going around $40+$15 shipping each. i picked up another one for my vette, but im not sure where to install it yet.

 

I have been thinking about going with the 2 8's idea myself.

Would the 8's respond better to music where the bass is going really fast?
Would it sound cleaner?

Also, did you guys do anything/put anything to the area behind the speakers back there.

 

Boston Acoustic. They rock. A friend has a pair of their 8's in his Dodge Dakota pickup. and they sound NICE!!!!!

 

I have a pair of 8's in the stock rear location. On a convertible this is on the back wall of the storage compartment. I had to space the stock grills out a little to keep the speaker cones from hitting them.

Without grills:


With grills:

 

I have two 8s in the rear location- Image Dynamics. They are a good speaker, comparable to JL audio but maybe not as well known.

I don't think the lack of low bass with the 8s is a problem- those low frequencies rarely show up in most music.

Don't worry about losing your rear speakers. A lot of high end audio cars don't use rear speakers, or only at very low power. It is harder to match the sound of 4 speakers than two speakers in such a small area such as a cabin. If not installed properly, rear speakers will drop music quality.

The best advantage about the 8's is that you can put them in the stock location. My car was broken into and the amps and receiver stolen, but they didn't know about my subs. Having a 10 inch sub in a box is just begging to get stolen.

Andrew
Austin, TX

 

can any of post pics with 8s in the speaker locations?
especially those of you with late model C4s? Please?