Proficient Medium-Density Fiberboard Back Box BB-IWS10 for IWS105 Subwoofer
Bass in the room, not the next one.
A Medium Density Fiberboard back box for the IWS10 in-wall subwoofer, built to fit any standard 16" stud bay and keep low bass from bleeding into adjoining rooms.

In-wall bass can rattle the rooms next to it.
Without an enclosure, a sub in a stud bay can pass vibration along to adjacent walls. A purpose-built back box keeps the sound pointed where you want it.
Built around the IWS10 sub
A wood-composite enclosure that gives your in-wall subwoofer a proper home inside the wall.
MDF back box
Medium Density Fiberboard construction designed for the IWS10 in-wall subwoofer.

Standard stud bay fit
Designed to fit any standard 16" stud bay.
Fits 16" stud bays
Designed to fit any standard 16" stud bay, so it suits typical wall framing.
Less wall vibration
Cuts down on translational energy vibration between adjacent walls.
Tuned to the sub
The IWS105 sub is tuned to the BB-IWS10 back box.
Everything you need to know.
| Brand | Proficient |
| Model | Medium-Density |
| Product Type | Speaker Enclosure |
| Material | Medium Density Fiberboard (MDF) |
| Compatibility | IWS10 Speaker |
| Stud Bay Fit | Standard 16" |
| Shipping Weight | 27.5 lb |
| Country of Origin | CN |
| Typical Uses | New-construction and retrofit speaker installs |
Proficient Medium-Density Fiberboard Back Box BB-IWS10 for IWS105 Subwoofer
The Proficient Medium-Density Fiberboard Back Box BB-IWS10 for IWS105 Subwoofer is from Proficient Audio, a line of speakers and audio accessories for custom installers and homeowners building whole-home, outdoor and home theater audio.
Mounting hardware holds speakers securely in place and simplifies installation, whether in new construction or outdoors.
Key Features
- Medium Density Fiberboard (MDF) back box for the IWS10 sub, designed to fit any standard 16" stud bay.
- Cuts down on translational energy vibration between adjacent walls.
- The IWS105 sub is tuned to the BB-IWS10 back box.
Specifications
- Brand: Proficient
- Model: BB-IWS10
- Product Type: Speaker Enclosure
- Compatibility: IWS10 Speaker
- Shipping weight: 27.5 lb
Typical Uses
- New-construction and retrofit speaker installs
- Mounting outdoor or landscape speakers
Please confirm cut-out size, mounting and compatibility with your existing speakers or amplifier before ordering.
Need help with compatibility?
Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.

Proficient Medium-Density, ready to order.
- Product Type: Speaker Enclosure
- Material: Medium Density Fiberboard (MDF)
- Compatibility: IWS10 Speaker
- Stud Bay Fit: Standard 16"
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