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acoustical stuffing / sound dampening subwoofer cabinet REL BRITANNIA B1 subwoofer

Hello,

 

Quick question on acoustical stuffing / sound dampening in a subwoofer cabinet.

I am the 2nd owner of a REL Brittania B1 subwoofer.

Opened it up, and NO stuffing. A bit surprising. My guess is the original who was a dumb &*(&#$   removed it.

I am guessing there should be some stuffing in the cabinet.

 

IF SO, I am looking for recommendations as to how much to put in the cabinet and where.

THANKS for the help!

Please see pictures for view of interior of cabinet. Bottom-Middle- Top pictures

 

FYI--- Interior of cabinet is approximately 13” x 15” x 19”

 

 https://drive.google.com/open?id=0B01U3HhYR3nZZUJ6U0lzZVNMYkE

https://drive.google.com/open?id=0B01U3HhYR3nZbGZNR1ktRHBOMmM

https://drive.google.com/open?id=0B01U3HhYR3nZS3kzSWpOaF9ySmM

REL BRITANNIA B1


stevethe4th

Showing 2 responses by bdp24

bdp24's avatar
bdp24
10,110 posts
 
Yup, Rythmik woofers are very good. The 12" is offered in two versions---with an aluminum cone, or a paper one, your choice. For really high performance, the Rythmik woofers can be used with the company's dedicated servo-feedback circuit plate amp, 370w or 600w. For use in a sealed enclosure, 1.5-2.0 cu.ft. is recommended. A lot of Maggie users are very happy with their Rythmik subs. Jim Salk offers his top model speakers with Rythmik subs built in.
bdp24's avatar
bdp24
10,110 posts
 

As auxinput states, internal bracing is the best and first way to combat enclosure resonance. Braces stiffen the enclosure walls, raising their resonant frequency above the frequencies the sub is asked to produce. Internal stuffing "tricks" the box into thinking it’s internal volume is greater than it actually is (by slowing down the sound), and needs to be matched to the driver’s needs in relation to that volume. Both too much or too little for any given application are possible.

Sonic Barrier is a fair enclosure wall damper, but a superior product to achieve that end is NoRez, sold on the GR Research website.

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