looking for suitable woofer

[daver]

I'm looking for a woofer that will fit into an enclosure of around 25-50 liters, and still reach down into the 30's (hz) if possible. Could be ported or some kind of transmission line. Any suggestions on 8 or 10 inchers?

This will serve as a bass unit up to about 150 ~ 250 hz.

the cheaper the better.

[MGrant1957]

If you are not going to push it too hard (60 watts+), I have had very good results with the SD215-88 Dual Voice Coil Subs. These work well in a ported enclosure of about 40-60 Litres, and will get down to the mid 20s, f3 of 27Hz in a 66 liter box. They are NLA but, there might be some in the Classifieds for cheap.

[Chris Roemer]

If you are not going to push it too hard (60 watts+), I have had very good results with the SD215-88 Dual Voice Coil Subs. These work well in a ported enclosure of about 40-60 Litres, and will get down to the mid 20s, f3 of 27Hz in a 66 liter box. They are NLA but, there might be some in the Classifieds for cheap.

Now it's the SD215A-88. Basically the same w/OUT the big shielding cup.

[bkeane1259]

Kinda need to know your application. If you're looking for low-level bass, you could get away with THIS in a small ported or PR enclosure. I'd stick with the Dayton SA-25 amp or you will quickly exceed xmax.

I modeled it HERE, but have not had a chance to build anything yet.

Johnny used that buyout sub with THIS PR and got good results.

http://techtalk.parts-express.com/sh...d.php?t=227907

Good luck.

[daver]

I'd forgotten about that one (SD215-88). I built a sub with one in a 30 liter box, and got fb at about 28. I have a great memory -- it's just short.

Any others for consideration out there?

Dave

[MGrant1957]

Now it's the SD215A-88. Basically the same w/OUT the big shielding cup.

The new one does not need as large of a box, but it also has a lower Qts, and rolls off higher, not much difference between a QB3 and SC4 alignments. Better suited to a sealed enclosure.

That 6.5 inch buyout uses an enclosure around 2 ft^3 but it will get quite low. been lookin at that one myself.

[johnnyrichards]

That 6.5 inch buyout uses an enclosure around 2 ft^3 but it will get quite low. been lookin at that one myself.

Nah, it actually performed rather poorly in the bigger cabinets I tried it in. It ended up being much happier in the ~0.6 cubic feet.

[Dirk]

Silver Flute 8"?

Available in both 4 and 8 ohm variants, fairly efficient and can be crossed higher if required. 1khz would be doable if you REALLY had to. It does need a larger cab. I'd recommend 40-45L. I've used them in my TMWW towers, and I have zero reason to add a sub for either SPL or low-end reach.

Also, they're very affordable and are built REALLY well.

[daver]

I'll look into the 8" Silver Flute. I've used the 6.5" and was impressed with the sound. Thanks for that.