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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
auxinput
2,920 posts
 

You could look at the Scanspeak 30W/4558:

https://www.madisoundspeakerstore.com/approx-12-subwoofers/scanspeak-discovery-30w/4558t-12-subwoofer/

It has very good XMAX.  It's an aluminum cone and the moving mass is less (less weight).  It has a lower resonance frequency than the AD12-300 (17hz vs. 24.6hz of the AD12).  It has a higher VAS than the AD12.  It is more expensive, but it's a very nice sub.

Couple other options:

https://www.parts-express.com/peerless-by-tymphany-835017-12-aluminum-cone-xxls-subwoofer--264-1114

https://www.parts-express.com/eminence-lab-12c-high-power-12-subwoofer-speaker-driver-4-ohm--290-668

Neither one has as good of XMAX as Scanspeak, but the Eminence has a higher power rating.  I would not get too attached to a high power rating.  I have some SonicCraft designed 12" woofers that are supposed to be 150 watts RMS, but I have driven them very loud with no problem.  You just don't want constant high power bass.  For home theater, this is just fine as loud bass is infrequent.

stevethe4th OP
37 posts
 
I'll check out all those, heard good things about eminence.

Let you know what I decide when I hear back from all the companies
stevethe4th OP
37 posts
 
How about this one?

https://www.parts-express.com/open-box-faitalpro-12hp1030-12-professional-woofer-8-ohm--294-1255
auxinput
2,920 posts
 

Faital Pro makes some good stuff.  However, this woofer would not be a good choice for your REL box.  For one thing, the resonance frequency is very high at 45hz - making this a general woofer instead of a subwoofer.  Subwoofer drivers typically have a resonance frequency between 17hz and 25hz.  The second thing is the VAS on the Faital is only 1.06 cubic feet.  This woofer would not perform well at all in your 3.5 cubic foot REL B1 box.  I modeled the Faital in BassBox Pro and it really wants a 0.7 cubic foot box for vented, and it still would not give you deep bass like a normal subwoofer.  The Faital stuff is designed to have very high efficiency for pro audio sound - to be very loud for live sound concerts.

Both the Scanspeak and the Peerless would be highly superior choices.  I don't know about the Eminence, but I suspect it would be fine  The eminence is not in the BassBox library and I didn't have time to enter in all the T/S parameters.

auxinput
2,920 posts
 
I just did the model on the Eminence and it would work out just fine in your REL B1 box.  So, ultimately, any choice of the ScanSpeak, Peerless or Eminence subwoofers I suggested would work great in your REL B1 cabinet.
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