Eclipse SW9122 ported enclosure

[thelbz 0]

I just picked up a NIB sw9122 and all that was in the box was 1 page of the owners manual and the mounting hardware. So I need to know what works good for a ported enclosure? How many cubes, freq., and port area? It will be running off a Audio Art 100hc, so in the neighborhood of 1000W.

I am thinking somewhere 2-2.25^3 ported to 32hz but not sure on port area, seems this sub will move a lot of air.

[S.DeYoung 968]

If its the one I am thinking of I believe it was made by TC Sounds. I have owned one at one time and wasn't to impressed. Eclipse recommended small sealed and small ported with ported being recommended. If I recall correctly they were like this:

0.4 - 0.6 ft^3 sealed

1.0 - 1.25 ft^3 tuned to 32-35hz

[sefugi 166]

If its the one I am thinking of I believe it was made by TC Sounds. I have owned one at one time and wasn't to impressed. Eclipse recommended small sealed and small ported with ported being recommended. If I recall correctly they were like this:

0.4 - 0.6 ft^3 sealed

1.0 - 1.25 ft^3 tuned to 32-35hz

My search found the same.

Woofer displacement - .19 ft^2

[cobra93 47]

I have the 88120 dvc as well as (3) 88120 ti dvc.

I've tried them both ways and they love a ported box, IMO.

I'd go with ~1.75 c.f. net.

Pencil and paper gave me 1.55 c.f. as the optimum volume.

I built the first enclosure to that with a 32 hz. tuning. Absolutely loved it in the back of Fox body hatch.

I had "wind" in my car for the first time. It would blow out my zippo.

I believe the port dimensions were something like 1-1/2" x 12" x 36", not sure I built the box along time ago.

I don't know what the in car response was, but it modeled on BBP6 with only a 3 db rise at tuning.

I powered it with a JL 1000/1, never had any problems.

If you do a search, you should find a thread stating no more than 2-2.5 c.f. net.

Be careful with you're excursion, the polyether foam surround will crack/tear if you wang it too far. I don't believe the former will bottom out on this motor, no ticking noise.

The rubber surround on the 88120 dvc seems to be more forgiving.

The box.

The sub.

Edited May 16, 2011 by cobra93