Box Assembly Detail
1” screws provided to secure back to sides.
1-1/4” screws provided to secure sides to ends.
Speaker Attachment Detail
1-1/4” screws provided to secure backbox to the sides of the speaker’s raised baffle box prior to installation.
BX MDF Back Box
We recommend using this backbox on installations where the space behind the drywall is open, requiring a deep enclosure. This typically occurs in ceiling installations in which there is an air gap or large, unenclosed area behind the speaker. This product is also useful on installations where sound transfer from one floor to the next is of concern.
This backbox is constructed of MDF and shipped disassembled. Assembly is simple and should take only 5 to 10 minutes with the aid of a power screwdriver. The parts are predrilled and the screws are included. A terminal cup with speaker wire pigtails allow the backbox to be completely assembled and attached to the speaker before the speaker is installed. Fiberglass insulation for the interior of the box is included.
Pre-Installation Note:
Use the appropriate Stealth Acoustic PlaceSavers® to reserve the location of the speakers at the rough-in stage of installation. The back boxes install with the speakers after the drywall has been hung, but before taping begins.
Specification Sheet: Download PDF
| Model | For Speakers | Width | Height | Depth | Ship Weight |
| BX-30 | LR3, B30 | 10-15/16” (278 mm) |
29-7/8” (759 mm) |
8-3/8” (213 mm) |
40 lbs. (18.1 kg) |
| BX-8 | LR8, B22, SLR8* | 10-15/16” (278 mm) |
21-7/8” (556 mm) |
8-3/8” (213 mm) |
34 lbs. (15.4 kg) |
| BX-6 | LR6 | 9-3/4” (248 mm) |
14” (356 mm) |
8-3/8” (213 mm) |
21 lbs. (9.5 kg) |
*SLR8 requires SLR8-MK Modification Kit