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SKU: SL800 OSD SL800 Dual Woofer 300W Subwoofer Low Profile On Wall, Sealed

Purchase OSD SL800 Dual Woofer 300W Subwoofer Low Profile On Wall, Sealed
  • SKU: SL800 onwall-slim-subwoofer

    OSD SL800 Dual Woofer 300W Subwoofer Low Profile On Wall, Sealed

  • $99.99

    Compare at: $149.99 You Save $50.00

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Lifetime Tech Support

The SL800 is a sub-woofer that features a revolutionary 4.75" (5" including the feet) deep design. Its super compact profile allows it to fit under sofas, tables, beds, and even between furniture and on-walls. The enclosure is designed to match the parameters of the woofer to maximize performance. This subwoofer features an 8 inch polypropylene woofer and a 10 inch passive radiator to produce the richest low frequency response while reducing distortion and vibration. 

Do I Need a Subwoofer Amplifier?
Yes! The SL800 is a passive subwoofer and needs a subwoofer amplifier to power it. An ideal match is our SMP-300 which is rated at 500W peak power and 250W continuous RMS.

Warning: California's Proposition 65


This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

  • Speaker Type: 8" In/ On-Wall Subwoofer
  • Woofer: Dual 8" Active & 10" Passive
  • Frequency Response: 30-800Hz
  • Power Handling: 300 Watts
  • Impedance: 8 Ohms
  • Inputs: Gold-Plated Spring-Loaded Binding Posts
  • Paintable Grille Included
  • Tuned Sealed Cabinet
  • Sold As: Single
  • Unit Dimensions: (L x H x D) 14.5" x 28" x 4.75"
  • Weight: 26 lbs
  • Warranty: 2 Years

3 Questions asked
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What's on your mind?

darvin • 12/17/2019, 2:17:43 PM can this subwoofer be used outdoors? any pictures with the grill on? thank you.
Customer Service • 12/17/2019, 2:17:43 PM
Hi Darwin: The fifth image on the web page features a shot of the woofer with its black cloth grill. Our graphic artist added a little highlight to it to help show it off. This is not mean for outdoors. WE are developing an in wall version that is similar 8 and 10 inch woofers with sealed enclosure and white metal grill. We hope to have these in the barn before Summer. Stay tuned... TL/4913
steve • 12/17/2019, 2:17:43 PM Is this a passive subwoofer? will it work with a 5.1 home theater receiver that has subwoofer speaker output terminals? the receiver doesn't have subwoofer preamp output, just speaker output terminals. I've an Onkyo home theater 5.1 system, with a passive subwoofer that I'd like to upgrade. thanks steve bufftough@sbcglobal.
Customer Service • 12/17/2019, 2:17:43 PM
Hi Steve: This will work perfectly for your application. It can be connected directly to the subwoofer speaker level output on your ONKYO 5 channel amp. TL/5106
Tom • 12/17/2019, 2:17:43 PM What is the -10 dB low frequency extension?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Tom: I am not sure what you are asking. This speaker has an 8" woofer that is active, connected to power. The 10" woofer is a passive Radiator with no power connected. It operates as a tuned port. TL/5275