12"=113 sq.in. x 2 speakers =226 sq in
10"= 78 sq in x 2 speakers =157 sq in
8" = 50 sq in x 2 speakers = 100 sq in If 4 were added it would still take a lot of volume like 2- 12" speakers.

I fit 2-12" into my '68, I like it!
The front of the box is angled to allow a larger circle. Side view looks like a triangle attached to a square box.
On amps, a cheap route is to buy a good 4-channel. If this isn't sufficient in the future you can re-wire for just 2-channel and add a second amp. This gets you going and also allows you to see how much more power if needed later.

 

Gulp! Maybe their stuff lasts too long :lol:
Might be a good time to get it cheap!

 

They were bought out by DEI? or somegthing. As long as they are left intact, they should still make great stuff. Here's a link with a picture of my sub box thanks to El Diablo. http://forums.corvetteforum.com/zerothread?id=193712
The single 12 is in a sealed box. I am going to redo it in a band pass box with the seperates in the stock locations. I am doing this because I need to make it lower so i can accomidate a glass window top I plan on adding in the spring. I'm going to make two 10" boxes for the Grand Cherokee I just picked up. As you can see though, 2 10s just won't fit in my vette.
92TripleBlack :cheers:

 

Scorp,
Here's a couple of shots of mine...

1 10" (Infinity Perfect 10)
Alpine Amp (5Ch)...drives the doors, 6x9's, and the sub. Head unit drives the dash speakers... (all speakers are Infinity Kappa series except sub)

Everything is removable... with no extra holes drilled anywhere...

 

Scorp....

2 10's in your car will blast a single 12. I had a friend with 1 18" JL W6 and it was oblitterated by 2 12's.....the difference was uncomprehensible.... :eek:
1 12 in the right box MIGHT go lower, not necessarily. Depends on what 10's you have. I have to JL 10W6's I will sell to you pretty cheap.

You mentioned box specs earlier and the W6 10's pretty much fall there.....Sealed box they want right at .65 Cubic feet and a ported they want 1 cubic foot. I love these subs and hate that I have to sell them, but I am really in debt and my vehicle got repoed.... :( :(

Let me know what you think.....my # is 615-890-2437

Damon

 

Say, you want a pair of subwoofers in a carpeted box and an amplifier for free? Heck, I'll even throw in a radio and equalizer.

Damn fool who had the car before me had this system installed - real hack job. U2's 'Mysterious Ways' sounded incredible on it. But I took it all out for my interior restoration. What I discovered was that big wood box with the subwoofers and amplifier, which weighed about 60 pounds, wasn't even bolted in. It just sat in the rear. Stopping quick would have brought that right towards me. Now it's history (except it's still in my basement).

 

i'd say go with what you can fit correctly, two tens will fit but the box space gets rather large. a JL Audio 10w3 needs about 1.5cuft of internal volume in a ported inclosure to really hit low and make some output. i'd really spend some time looking into box design as it will make or break a sub. a single 10" set up in the right box will slaughter two 12's in tiny enclosures. if you've ever had a chance to use boxplot or leap {speaker design programs} when you input the specs of a sub and vary box size all sorts of things happen. if you short change the box don't expect bass below 80hz as the speaker can't resonate to create it. personally i'm using a single 10w3 in my 90 couple on the drivers side in a 1.5cu ft box with a 3" port roughly 10" long. that still gives me room for the NOS bottle on the passenger side. if space is a concern you might even check out the 8W6 they make it's a nice little sub that sounds wonderful in small enclosures like .75cuft. if you don't take my word for this call the techs at JL and speak to them for awhile about what your thinking. i have a feeling they may sounds similar to what i'm typing

 

Can't hurt!! It will at least give me something to start with and look at. :)

 

I voted for two 10s...




[Modified by jay17, 12:34 AM 12/4/2001]

 

I am pretty sure I can fit 2 10's in my Convertible. I am planning to use BA Pro10.5's. I think I can sink them into the rear storage compartments (86-89 speaker compartment) if I do some of the lower parts in fiberglass. If that doesn't work I know that I can fit a sub box 31" x 8" x 11" that will stand on its side, in the fron tof the trunk and point backwards.

 

I'd love to go dual 10's in mine. It's about as big as I'd go these days.

I'm probably going to end up with dual 8 separates and a single 10 in the middle. Gotta cover the midrange too...

 

Scorp: I'll email you jpegs in the next day or two.


[Modified by gh86E, 8:09 AM 12/5/2001]

 

You can do a pair of 10s if you make a similar box to mine and use the stock locations for the seperates instead of the box. That will be the next upgrade. I didn't do this originally as I wanted to not make any permanent mods as I was leasing. Now I own so mod away. A picture is on this link.
92TripleBlack http://forums.corvetteforum.com/zerothread?id=193712 :cheers:

 

Oh man, those are tight quarters! Doesn't it get hot with those amps so
close to you? :eek:

 

Not a problem. Since they are in the air they vent pretty quickly. Summer, tops down or AC's on. Winter, got the heater. When the top goes down, it lowers over the speakers but not the amps. They are visible under the rear deck between the seats.
92TripleBlack :cheers:

 

I have the square solarbarics (dual) and a custom box and they sound great...
almost 700 watts of pure enjoyment.......... :flag

 

If you go with dual 10's you'll need a GOOD size box! Forget trying to install them in the storage compartments and trying to get them to sound good. If you go that route, just get a good 12" with a 1.25" box (sealed) and it will sound alot better than those 2 10's in the storage comparments. If you don't mind having a HUGE box, then go for it. I would recommend a nice set of AudioBahn 10's. Get an MTX amp for them. I would recommend running at least 200watts rms to each speaker. I personally am going to put a 12" in a 1.25" box in my 87...later on down the road though. I had two MTX 8's in my 85, and it got boring always hearing the THUMP THUMP THUMP. :rolleyes:

 

you're not from the ghetto, are ya white boy?

go with dual 10's, and bump that gangsta rap.

booyah!@#$ :D

 

Look how I have my speakers installed. I don't have a competition finish on the panels, but then again, I don't compete. :D

http://forums.corvetteforum.com/zerothread?id=171632

 

Personally, I REALLY like Bill Reid's set up on page 1. I used to- (and still do but not as often)- build speakers as a hobby. Mostly home stuff, but the theories apply to all types of speakers. One thing to note, is that sound production is based on the movement of AIR, in specific volumes. In an auto install- there are problems that you don't have in a home, and that's that the chamber that you place your drivers in their enclosures in is VERY SMALL. So- if you take a couple of 15's and put them in a big box in a very small car- and get "STOOPIT" and wire up about 300 watts to each, pumping a Vas around 10-12 cubic feet of air each- you will get LOTS of air movement, but you won't get music- because the car iteslf TURNS INTO A CHAMBER WITH A RESONANCE FREQUENCY. Think about it. What that means put very simply without all the mumbo-jumbo, is that your huge amount of air movement will not give you a smooth response. You will peak at one freuency, and you won't be able to hear the lower frequencies properly because there is too much air moving. If the windows are rolled up- it raises the resonance frequency, because the air movement is captured within the car. Ever wondered why "ghetto" cars boom at around 60-100 Hz in SPL contests? That's where they resonate, so the spl is higher, lotsa air moving.

In a small space like a vette- if you want a flat response curve, you would choose speakers that don't move as much air, in an efficient enclosure. Nowadays the some manufacturers have learned this market well- and knowing how we think, they now build 12 inch woofers that move less air than some 10 or even 8 inch woofers in some cases. If you look at the Theile Small specs- you can see it. That enables us to put BIG speakers in SMALL boxes- and move just as much air as, well, an 8 inch woofer. They also handle GOBS of power, with huge motor structures and vented poles etc. It doesn't change the science though.

Scorp- if you want a relatively flat curve, look closely at the well designed 8's as a pair, a dvc 10, a bridged mono 4 ohm 10. If the enclosure is designed properly, you'll have all the SPL you could want, the car itself boosts lower frequencies by about 12 Hz ,and you could hear all of the music- like the cannons in the 1812 overture on telarc disc, or a nice deep ball massaging 25 Hz sine wave at 100+ dB. Your choice...