Want to build a big sub for HT, what design and driver(s)?

[ßart West-VL.]

Hello all,

As I'm busy designing surround enclosures, I will need a good sub of course.
It has to be good from the first time, no interest in doing something half-good to change it anyway after a year.
So the effects of the HT have to be a bit shocking, quite literally.

Yes I have neighbors too... nearest are at 100 yards.
I have only 2x 200W @ 4Ω at the moment, no intension to move up for now, mainly because it takes a lot of extra power just to get 3dB increase → a bit of efficiency is wanted too.
If really needed, it can be bridges to get 600W.
I'm willing to use multiple drivers, say 4 pieces at 8Ω each (depending on the design of course) this would match the amp quite nicely. Would it be beneficial to put 4 driver in a vertical row to minimize bass maximums and minimums throwout the room? I can't use Geddes method.

Maximum outside dimensions:
height 2m45 / 96"½
width 89cm / 35"
depth 38.5cm / 15"
The depth can be altered if needed or put at an angle, sub is in the corner, ceiling-height.

Drivers I have right here:
One JBL, unknown type, have to measure it, only 10"
Four Radio Shack's type:40-9000 (15")
Two 8" out of Bose boxes.

Thanks for reading.

edit: Oh yes, Carmina burana...those canon shots, that would be nice the experience like it should be...

[CollinA]

There's this:

CSS Tapped Horn at HomeTheaterShack

It's a tapped horn with two CSS SDX10's. Efficient and low, but kinda big.

Here are the drivers:
http://www.creativesound.ca/details.php?model=SDX10

140USD per driver. Shipping to Belgium might be annoying, though.

[tb46]

Hi,

This, or something along these lines, might do:

TRIO 12 Front loaded Horn Subwoofer

Regards,

[ßart West-VL.]

I was always a bit scared of horns for the obvious reasons but after reading post #54 of the trio12 thread, I'm starting to get excited and less scared
Thanks Collin and Oliver, back to the reading...

[digits]

I'd look at the design on ESP, I love the circuit he uses to drives subs way below FS, you need a good plate amp and a strong sub driver and this little circuit... also the actual box is about the size of the driver... good for WAF.

[chris661]

Looking at your available drivers...

Break out the 15"s!!
Make a pair of cabinets (one per amplifier channel), 2x15" per side, sealed, add eq as you see fit. If nothing else, it'll be rather loud.

Chris

[ßart West-VL.]

Yes, that would be project 48.
I read about that too, some time ago and find it interesting but needs a strong woofer and amp, 'power-hungry' comes to mind.
Maybe a combination of some designs might work, but not the horn and project 48 of course.

[ßart West-VL.]

Chris, do you think it has a real chance of fulfilling the target as requested?

[chris661]

Of the drivers you have, 4x15" sealed +eq will get you closest to those canon shots, unless you have the capability to measure the T/S parameters of your drivers?

[digits]

Well he says he used 400W for the prototype, but 200W would have been enough.