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SKU: KIT-SMP500-IWS88 Dual 8" In-Wall Subwoofer w/ Reinforced Back Bridge + 400W RMS Class D DSP Subwoofer Amplifier

Purchase Dual 8" In-Wall Subwoofer w/ Reinforced Back Bridge + 400W RMS Class D DSP Subwoofer Amplifier
  • SKU: KIT-SMP500-IWS88

    Dual 8" In-Wall Subwoofer w/ Reinforced Back Bridge + 400W RMS Class D DSP Subwoofer Amplifier

  • $574.99

    Compare at: $861.99 You Save $287.00

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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.

Because this is a passive speaker, it will require a subwoofer amplifier to power it, so we have paired it up with our SMP500, which 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).

You'll experience deep, rich and crisp bass while watching your favorite movies, especially action and adventure flicks. A big bang for the buck, features include a front-mounted power meter, back panel adjustable gain and volume control limiter to protect the woofers as well as low-level and high-level pass-through input/outputs to cover newer and old school sound systems. Combining the best qualities of both class A and B amp technologies, distortion is low while efficiency is high, and the SMP500DSP Mono Amp also includes a variable high cut filter that routes higher frequencies to main speakers. This allows subs to concentrate on the low-frequency sound effects for which they are designed and keeps low bass away from your surround speakers for much cleaner highs and midrange.

  • Mono Class D Dedicated Subwoofer Amp
  • 1000W Peak /400W RMS @ 4 ohm
  • Variable High Cut Filter 30Hz-150Hz, front panel knob . Additional Front Panel Control: Phase Switch and Volume Control
  • Choice of Signal Level Input or LEF (Low-Frequency Effects)
  • Turn On Choice: Music Sensing, Manual On or 12V Trigger
  • Adjustable Gain/Volume Control Limiter
  • Signal (low level) and Speaker Level (high level) inputs
  • 110/220V switchable ETL, CE
Warning: California's Proposition 65


WARNING: 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
  • Warranty: 10 Years
  • *Note: Requires Additional Subwoofer Amplifier
Subwoofer Amplifier
  • Design Type: Mono Class D
  • Peak Power Output: 1000W @ 4 ohm
  • Power Output: 400W RMS @ 4 ohm
  • Frequency Response: 30Hz ~ 150Hz, +/-1dB
  • Impedance: 8 ohm to 4 ohm stable
  • Input Sensitivity: 190mV
  • Crossover: 40-160Hz
  • Phase: 0-315°
  • Signal to Noise Ratio: 95dB
  • Turn on options: Music Sensing, Manual On or 12V Trigger
  • 110/220V switchable
  • DSP (Digital Signal Processing): Yes
  • Automatic source switching
  • Input and Output Terminals: Line input, stereo/LFE input, 12V trigger inputRCA input, speaker level in/out, trigger, sub out
  • Rack Mountable: Yes
  • Remote Control: Yes
  • Dimensions (W x H x D): 17.13" x 1.75" x 9.45"
  • Weight: 7.6 lbs
  • Warranty: 2 years

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