Almost all speakers have too much stuffing. More than say a grapefruit size amount strangles the sound and muffles the bass. I know what you're thinking, "but everyone does it."
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
- ...
- 26 posts total
I think that evaluating stuffing without the proper experience with microphone techniques is pretty inefficient. I point you to this thread: http://techtalk.parts-express.com/forum/tech-talk-forum/8948-effect-of-stuffing-on-the-qtc-in-a-woof... |
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. |
Thanks for all the information from everyone! Sorry for my slow response. All great points and I do have another quick question regarding replacement woofers I’d like to ask AUXINPUT—You are correct, I did some more research and contacted other owners, took me a while, but you are right. There was no stuffing from the manufacturer. GREAT INFO on how to modify the cabinet. I appreciate it. ERIKSQUIRES—Excellent point about the heat of the woofers. I have owned all the infinity intermezzo speakers including the 1.2s subs. They almost ALL had problems from heat build up exactly as you describe. KINESIS & GEOFF—I agree with your experience. And you are right it’s the old “everyone is doing it” QUESTION—I need a replacement 12” woofer for this large volume enclosure. I know the T/S parameters of the old driver which is helpful. I have been shopping and see a huge range of prices from $40-$1000. Seems like a suitable replacement is $400+ if I were to go with a home audio driver. What I was wondering is what about CAR stereo woofers? I see a ton of 12” car stereo woofers that are extremely well built (sometimes better than home audio), have good parameters, and are at a lower price. The only downside is that they are DUAL VOICE COILS, DVC. I know a DVC would have to be wired in series thus taking 2 ohm to 4ohm for example. Is there any downside to a car audio woofer? Any downside to merely connecting the 2 voice coils?
Thanks for your thoughts! |
- 26 posts total