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    SKU: OSD-IWS-88

    OSD IWS88Dual 8" In Wall Subwoofer 350W, Injected Woofers Back Bridge Plate

    Purchase In Wall Subwoofer OSD IWS88 Dual 8" Injected Woofers Back Bridge Plate
    • Outdoor Speaker Depot SKU: OSD-IWS-88 dual-in-wall-passive-subwoofer-8-inch
    • In Stock


      Compare at: $161.99
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    We improved the lower end of our popular dual in-wall subwoofer. By adding a strong reinforced back plate to stiff the structure of the subwoofer, we make it to sound deeper and clean. A subwoofer is designed to reproduce the lowest of audible frequencies and will give you that spine-tingling rumble effect that takes you out of reality and into the plot. With dual 8" Injected polypropylene woofers, bigger magnets and 350 Watts of power handling, the IWS-88 in-wall subwoofer performs excellently for home theater surround sound applications as well as for listening to music. Like all OSD Audio speakers, the IWS-88 includes a dog-ear bracket system that mounts securely to the sheet-rock after the cut-out hole has been made and the speaker has been dropped into the hole. The grille is paintable to match your room decor and we even include a cutout template that doubles as a paint shield. You'll experience thunderous, room-filling bass without filling up floor space.

    Amplifier Suggestions
    Because this is a passive speaker, it will require a subwoofer amplifier to power it. An ideal match to this subwoofer is our OSD SMP500 dedicated subwoofer amplifier that features 400W RMS @ 4 ohms, Variable High Cut Filter 30Hz-150Hz; front panel Knob, and Choice of Signal Level Input or LFE (Low-Frequency Effects).

    Warning: California's Proposition 65


    This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to

    • Speaker Type: Dual 8" In-Wall Subwoofer
    • Woofer: Dual 8" Injected Polypropylene w/ Reinforced Back Plate
    • Frequency Response: 38Hz-500Hz
    • Power Handling: 350 Watts
    • Sensitivity: 90 dB @ 1W/1M
    • Impedance: 4 Ohms
    • Inputs: Spring Binding Posts
    • Install-friendly Dog Ear Installation Brackets
    • Cut-Out Template for Easy Installation
    • Paintable Grille Included
    • Sold As: Single
    • Mounting Depth (Assuming .5" Drywall): 3.56"
    • Unit Dimensions: (L x H x D) 11.43" x 18.43" x 4"
    • Cutout Dimensions: (L x H) 10.25" x 17.75"
    • Weight: 11 lbs
    • *Note: Requires Additional Subwoofer Amplifier
    • Warranty: 10 Years
    31 Questions asked
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    What's on your mind?

    Joe • 12/17/2019, 2:17:43 PM What type of amp is recommended for this subwoofer???
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Joe: The best Amp for the job is our OSD SMP250 (MI-3) dedicated Subwoofer Amplifier. It features 150 watts (Mono). It also features front panel controls, Phase switch, Frequency Control Knob (35 Hz to 180 Hz) and Volume control. Plus Three turn-on options; Music sensing, Manually switched or 12 volt trigger TL
    nim • 12/17/2019, 2:17:43 PM does this include a paintable grill cover?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Mim: Yes all of our speakers have paint able Grills and Frames. And the paint shield is included with this speaker as well. TL
    nim • 12/17/2019, 2:17:43 PM i am building a home and looking for a pre-construction bracket for this item. I don't see one so how is is mounted?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Nim: As you can see from the images on the product page the IWS-88 features an eight leg Dog Ear mounting system. It mounts securely to the sheet-rock after the cut-out hole has been made and the speaker has been dropped into the hole. We do recommend you create an enclosure behind the speaker in the stud bay. I am assuming since you are inquiring about a new construction bracket you will have access to the wall before the sheet-rock has gone up. We recommend adding a (2) 2x4 piece of stud material roughly 24 inches apart one above and one below where the speaker will be centered. Then you would add a 1/4 board to run between the two studs running vertically and the two pieces you have added above and below. So 24 " tall and 14 to 15 inches based upon the actual measurement between the two vertical studs. Then add a little silicon applied along the seams of the 1/4" backboard and the studs before you install the Sheet-rock and cutout your hole. There is a cutout template that doubles as a paint shield that you use to mark your hole. Lastly you will want to stuff the cavity with some fiber fill like you find at a bedding or hardware store. TL
    Nimish • 12/17/2019, 2:17:43 PM Do you have a spec sheet on this speaker?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Nim: We will need to create a spec sheet for this speaker which will post on the product page. Please stand by... TL
    Daniel • 12/17/2019, 2:17:43 PM Which one would be more ideal in a HT setup .... IWS-88 or IWS-10?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Daniel, The IWS-8 in-wall subwoofer has more cone space than the IWS10; however, the IWS10 has a lower frequency response than IWS-8. As you can see, there are unique pros to each subwoofer. CL/MA 1620