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Monolith M-IWSUB82 Dual 8in In-Wall Subwoofer| Passive, Paintable, Easy Install, Adds Powerful Bass to In-Wall or In Ceiling Home Theater System - 2 of 4Monolith M-IWSUB82 Dual 8in In-Wall Subwoofer| Passive, Paintable, Easy Install, Adds Powerful Bass to In-Wall or In Ceiling Home Theater System - 3 of 4Monolith M-IWSUB82 Dual 8in In-Wall Subwoofer| Passive, Paintable, Easy Install, Adds Powerful Bass to In-Wall or In Ceiling Home Theater System - 4 of 4
Monolith M-IWSUB82 Dual 8in In-Wall Subwoofer| Passive, Paintable, Easy Install, Adds Powerful Bass to In-Wall or In Ceiling Home Theater System - 1 of 4

Monolith M-IWSUB82 Dual 8in In-Wall Subwoofer| Passive, Paintable, Easy Install, Adds Powerful Bass to In-Wall or In Ceiling Home Theater System

$439.99

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About this item

Highlights

  • Premium Drivers: High excursion, compact subwoofer. The Monolith M IWSUB82 features two 8" polypropylene cone subwoofers with rubber surrounds to provide ample bass in a home theater, audio, or media installation.
  • Easy Install: The heavy duty mounting tabs make for a fast and problem free installation. The magnetically detachable grille is powder coated in white and can be painted to match any decor.
  • Equipped with two high‑end, compact, 8" polypropylene woofers, heavy duty mounting tabs, and a paintable magnetic grille.
  • Adds powerful bass to your in‑wall or in‑ceiling home theater system.
  • Can be used in both new construction or seamlessly added to existing systems.

Description

The Monolith by Monoprice M IWSUB82 Dual 8" In Wall Subwoofer adds powerful bass to your in wall or in ceiling home theater system. Equipped with two high end, compact, 8" polypropylene woofers, heavy duty mounting tabs, and a paintable magnetic grille, the M IWSUB82 can be used in both new construction or seamlessly added to existing systems. The 91dB sensitivity ensures an easy pairing with just about any amplifier. The Monolith by Monoprice M IWSUB82 Dual 8" In Wall Subwoofer is designed to add thunderous bass, without taking up valuable floor space.
Dimensions (Overall): 9.9 inches (H) x 15.6 inches (W) x 25.2 inches (D)
Weight: 26.18 pounds
Electronics Condition: New
Connection Type: USB-C
Wireless Technology: No Wireless Technology
Model name: 142832
Battery: 0 No Battery Used
Warranty: 5 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 86717037
UPC: 889028170250
Origin: imported
The above item details were provided by the Target Plus™ Partner. Target does not represent or warrant that this information is accurate or complete. On occasion, manufacturers may modify their items and update their labels.
We recommend that you do not rely solely on the information presented. If you have a specific question about this item, you may consult the item's label, contact the manufacturer directly or call Target Guest Services at 1-800-591-3869.
If the item details aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 25.2 inches length x 15.6 inches width x 9.9 inches height
Estimated ship weight: 26.18 pounds
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO, Alaska, Hawaii
item ships from third party seller: Monoprice

Return details

This item can be returned to any Target store or Target.com.
This item must be returned within 30 days of the date it was purchased in store, delivered to the guest, delivered by a Shipt shopper, or picked up by the guest.
See the return policy for complete information.
WARNING:This product can expose you to Phthalates, which is known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warning.ca.gov For more information, go to https://www.p65warnings.ca.gov/

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3.3 out of 5 stars with 4 reviews
5 out of 5 stars
6 May, 2026
originally posted on Monoprice
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Monster Bass!

I was skeptical about the size only being two 8" speakers, but these things pound. I have two of them installed (one on each side of the TV) and will warn you that you better brace your walls. My wife made me get rid of my 30 year old M&K because she didn't want the "coffee table", and I must say this has been such an upgrade! I have them paired with the Monolith 600W amp and overall it is FAR more than I need. Probably not the bass extension of a Velodyne, but enough to rattle the walls in the whole house.
KevinS
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1 out of 5 stars
29 July, 2025
originally posted on Monoprice
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Awful

I bought and installed 3 of these units and they are terrible because they don't have backbox / baffle design. I recommend you stay away from these and get something with a backbox otherwise everything will rattle and you will hear virtually no bass.
PranavP
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2 out of 5 stars
28 February, 2024
originally posted on Monoprice
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Not the best design.

Im sure it would sound great if this was designed in sealed enclosure. In my brand new house with sheetrock screwed and glued to the wall, it caused so much rattle and vibration they had to be removed. This was at nearly any level of sound. Build quality was great, was happy with everything until we realized the amount of pressure it was building in the walls.
CharlesK
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5 out of 5 stars
13 September, 2022
originally posted on Monoprice
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Excellent Sound

Replaced 2-12 inch down firing Klipsch with 1 of these installed in ceiling. No they do not play as deep as both Klipsch but the sound is far improved. I powered them with the swa-400 amp wired at 8ohms it is a fairly good match. They come prewired to 2ohms with jumpers, they are 4ohm SVC 150watt RMS each. Each sub has it's own terminals and jumpers can be removed to wire to 8 ohms if needed. They produce excellent sound and very tight accurate bass. I imaging had I purchased 2 of these they would put the Klipsch to shame. The SPL is very impressive from 8" subs I'm not past the break in period yet so I haven't pushed them just yet, I know from my other one they have amazing ability. I installed the single sub version on my patio and have been so impressed decided to give the dual a run inside. The monolith product line is incredible for the cost, I just ordered the FRC 3 way and the 2 way to replace my current 7.1 in ceiling set up. Wife approved aesthetics
AaronB
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