...in need of enclosure advice regarding 15-inch woofer

[Tattz]

oh also, what can you guys tell me about dampening material and would this help my project at all? If so, how?

[Tattz]

hey guys, look what i stumbled upon. Opinions/reactions?

http://www.northcreekmusic.com/Thunder/ThunderInfo.htm

[GPM]

Apparently, Ricci has moved on......... You'd have to define 'small' since with Ricci's alignment's ~800 W limit (if kept within Xmax) it would be plenty enough back when I helped folks with their portable sound systems, but on a live audio thread recently I got told in no uncertain terms that if a speaker couldn't do >130 dB/m from 40 Hz-up it wasn't a contender, which this alignment won't do unless you use four with several kW on tap.

Cabs this big require at least one each of all parallel surfaces covered to damp down its eigenmodes (standing waves), so typically one side, top and back of a vented cab gets covered with 1" acoustic fiberglass insulation or similar 'faceless' insulation.

WRT the 'Thunder', being a PR vented sub it's tuned too high IMO. These are best suited for <20 Hz tunings where the vent would be unacceptably long for a low vent mach. Best also to use two drivers/PRs in a bipolar layout to ~cancel out their vibrations as pioneered AFAIK by the Servo-Drive Contrabass special effects sub used in theme park, etc., sound systems.

GM

[Ricci]

It kind of depends like GM said, whether it would be enough for live sound. Used sensibly in smaller places and possibly adding another cab to make it a pair down the road, it could be decent enough. Many of the live sound guys poo-poo anything that won't do 135db peaks easily, but those guys are usually doing very large scale productions with professional rigs. It'd be plenty for live bass guitar and like I said a pair would be ok for bar band/weekend warrior SR work.

[Tattz]

certainly, only this project is for a very small studio, not for live sound. My goal is really to be able to monitor music down to 24hz.