Monoprice 12" 150W Powered Slim Low Profile Subwoofer

Monoprice has Monoprice 12" 150W Powered Slim Low Profile Subwoofer (SSW-12, 35847) on sale for $129.99. Shipping is free.

Thanks to Deal Hunter TattyBear for sharing this deal.

About this product:

Slim 12" 150W powered subwoofer for flexible room placement
Low-profile ported design fits under chairs, sofas, or stands
Engineered enclosure delivers strong bass despite compact size
Includes brackets for optional on-wall mounting
Ideal for rooms needing space-saving subwoofer placement

Specs:

12" Ported Bass-Reflect Driver Enclosure
Amplifier Power 150W w/ <0.5% THD
Line Level RCA/Speaker Level Terminals
20 ~ 150Hz (-10dB) Frequency Response
Volume/Low Pass Filter
29.9"x19.7"x7" (39 lbs)

Editor's Notes

Written by jimmytx | Staff

About this Store:
- Refer to Monoprice's Return Policy here.
Additional Information:
- This offer is slightly more ($6.25) than our front page deal price of $123.74 from August 2023 which earned over 20 thumbs up.
- Rated 4.7 out of 5 stars at Monoprice based on over 15 customer reviews.
- Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by TattyBear | Staff

Monoprice has Monoprice 12" 150W Powered Slim Low Profile Subwoofer (SSW-12, 35847) on sale for $129.99. Shipping is free.

Thanks to Deal Hunter TattyBear for sharing this deal.

About this product:

Slim 12" 150W powered subwoofer for flexible room placement
Low-profile ported design fits under chairs, sofas, or stands
Engineered enclosure delivers strong bass despite compact size
Includes brackets for optional on-wall mounting
Ideal for rooms needing space-saving subwoofer placement

Specs:

12" Ported Bass-Reflect Driver Enclosure
Amplifier Power 150W w/ <0.5% THD
Line Level RCA/Speaker Level Terminals
20 ~ 150Hz (-10dB) Frequency Response
Volume/Low Pass Filter
29.9"x19.7"x7" (39 lbs)

Editor's Notes

Written by jimmytx | Staff

About this Store:
- Refer to Monoprice's Return Policy here.
Additional Information:
- This offer is slightly more ($6.25) than our front page deal price of $123.74 from August 2023 which earned over 20 thumbs up.
- Rated 4.7 out of 5 stars at Monoprice based on over 15 customer reviews.
- Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by TattyBear | Staff

Price Intelligence

Deal History

Sale Price

Slickdeal

$NaN

Today

Post Date	Sold By	Sale Price	Activity
10/31/23	Monoprice	$127	2
08/29/23	Monoprice	$124 Frontpage	44
08/25/23	Monoprice	$140	5
06/06/22	Monoprice	$140 Popular	18

Top Comments

fyreboltx

3.1KComments

283Reputation

That's the nice thing about subwoofers, you can never have "too much" since you can just turn them down.. it's always the case of "not enough".

Go to Comment

swechsler

5.5KComments

1.2KReputation

Also available from Amazon for the same price [amazon.com].

Go to Comment

Community Reviews

This is a slim 12 inch powered subwoofer built for tight spaces, with enough output for modest setups and a little extra thump for bookshelves, soundbars, or a bedroom home theater. The low 7 inch height can fit under some regular LoveSac seats, and the compact profile is the main appeal. It is not a high end sub, and the cabinet, driver, and bass quality are described as basic rather than refined. Fit and placement matter, the cable is not included, and the connection options are limited without a sub output.

people trying to add "a little thump" to a modest bedroom or small home theater setup because it's a low-profile, space-saving 12" that should be enough for pairing with bookshelves or a soundbar.
swechsler FranksAndBeans capricio TodayOnly
buyers who need a powered sub that can fit under a regular couch/seat because measurements suggest it should clear under a non-storage seat (about 10" from cushion bottom to floor) even though it's only 7" high.
swechsler
home theater users with an AVR who want to improve bass response because if your receiver has sub EQ it can help address the tendency of cheaper subs not to play very low or very flat.
FranksAndBeans
stereo/2-channel setups where you can route bass to the sub because a stereo receiver or properly adjusted home theater receiver can set speakers to small and feed only bass to the sub for better headroom and dynamics.
hellonwheelz
people pairing with a budget soundbar for a bedroom HT upgrade because commenters specifically recommend pairing it with a $50 Yamaha soundbar refurb and call it a solid upgrade.
capricio

buyers who want to connect using a dedicated subwoofer output from their receiver because this model doesn't have a sub output and is described as direct digital, limiting connection options.
room209
people planning to place it under a storage seat or in a tightly enclosed spot because it likely won't fit under a storage seat and ventilation could be an issue if you put it inside.
swechsler
neighbors/households expecting it to be loud enough to rattle pictures because it should provide some thump but "won't knock the pictures off the wall" in a neighbor's house.
TodayOnly
buyers who need a weather-resistant or outdoor-ready subwoofer because it isn't weather resistant and the setup requires low-level line inputs.
Baron_O_BeefStick
buyers who are sensitive to "cheap/boomy" sound quality compared with a higher-tier sub because one commenter preferred the Monolith M10 V12 and found this one sounded cheap and boomy for their taste.
Brunoslack

Common Questions (5)

It should add some thump and work for modest setups like bookshelves or a soundbar, but it is not a high-end sub and will not deliver room-shaking output. AVR sub EQ can help it play flatter if your receiver supports it.
swechsler TodayOnly FranksAndBeans Brunoslack
It should fit under a regular LoveSac seat if there is about 10" from the cushion bottom to the floor, since the sub is 7" high. It will not fit under a storage seat, and placing it inside one may create ventilation issues.
swechsler FranksAndBeans
Yes, it includes a stereo RCA cable, roughly 6 feet long. The cable is easy to miss in the box, so check the packaging before buying one separately.
swechsler swechsler
It does not have a sub output itself, so it needs low-level line inputs from the source or receiver. For speakers that only output full-range signal, a low-pass filter may help, but the connection options are limited.
room209 Baron_O_BeefStick
Yes, it can be added to a stereo receiver setup by setting the main speakers to small and sending bass to the sub, which can improve headroom and dynamic range. It is also described as a good modest upgrade for a bedroom soundbar setup.
capricio

AI-generated summary based on comments from the community. Updated 3mo ago

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33 Comments

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Baron_O_BeefStick

Dec 10, 2025 5:30 PM

112 Comments

Joined Nov 2011

Baron_O_BeefStickDec 10, 2025 5:30 PM

112 Comments

I have a pair of SAMSUNG MX-ST50B Sound Tower bluetooth speakers I use outside. I understand this would need to be plugged in and is not weather resistant. I got the Samsung's relatively cheap and love them but bass drops in deathcore songs etcera do not hit the way I wish, even with the sound towers plugged in. I was going to grab a Monoprice Monolith 12 open box but they weigh quite a bit. The rockville powered 18 dj subwoofer was another option but it weighs 80+ lbs. The subwoofer needs low level line inputs. The samsung's aren't really supposed to have a subwoofer connected to them since it would be a full range signal sent to the subwoofer but the low pass filter should handle that. I feel like this may not be enough though. If the monolith 10 was 450$ shipped I would use one of them. Any advice on a subwoofer that would work for this situation. It doesn't need to be weather resistant but it does need to be a good bang for buck. I have dual monolith 10's and one of em already has water damage that does not impact performance. I would just use that one outside and replace it with a crisp monolith 10. I have elemental designs a2-300's in the garage and one of em has that truck bed liner coating but damn they are big lol. I have not seen a good bang for buck weather resistant subwoofer, esp that runs off an internal battery.

Zorba1446

Pro

Dec 13, 2025 3:10 AM

1.6K Comments

Joined Sep 2018

Zorba1446

Pro

Dec 13, 2025 3:10 AM

1.6K Comments

Quote from Baron_O_BeefStick

:

I have a pair of SAMSUNG MX-ST50B Sound Tower bluetooth speakers I use outside. I understand this would need to be plugged in and is not weather resistant. I got the Samsung's relatively cheap and love them but bass drops in deathcore songs etcera do not hit the way I wish, even with the sound towers plugged in. I was going to grab a Monoprice Monolith 12 open box but they weigh quite a bit. The rockville powered 18 dj subwoofer was another option but it weighs 80+ lbs. The subwoofer needs low level line inputs. The samsung's aren't really supposed to have a subwoofer connected to them since it would be a full range signal sent to the subwoofer but the low pass filter should handle that. I feel like this may not be enough though. If the monolith 10 was 450$ shipped I would use one of them. Any advice on a subwoofer that would work for this situation. It doesn't need to be weather resistant but it does need to be a good bang for buck. I have dual monolith 10's and one of em already has water damage that does not impact performance. I would just use that one outside and replace it with a crisp monolith 10. I have elemental designs a2-300's in the garage and one of em has that truck bed liner coating but damn they are big lol. I have not seen a good bang for buck weather resistant subwoofer, esp that runs off an internal battery.

RSL 10s. But not weather proof.

Brunoslack

Dec 17, 2025 5:56 AM

309 Comments

Joined Jul 2013

BrunoslackDec 17, 2025 5:56 AM

309 Comments

Received it today and not really impressed, probably because i had monolith m10 v12, this one fits great in tight space but not what I was hoping for, it sounds cheap and boomy for my taste, wish i ordered them from amazon for free returns

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Monoprice 12" 150W Powered Slim Low Profile Subwoofer

$130

$250

Editor's Notes

Original Post

Editor's Notes

Original Post

Community Voting

Price Intelligence

Deal History

Top Comments

Community Reviews

Best For / Not Worth It If (10)

Pros & Cons (8)

Common Questions (5)

Join The Conversation

33 Comments

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Monoprice 12" 150W Powered Slim Low Profile Subwoofer

$130

$250

Editor's Notes

Original Post

Editor's Notes

Original Post

Price Intelligence

Deal History Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price". Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.

Top Comments

Community Reviews

Best For / Not Worth It If (10)

Pros & Cons (8)

Common Questions (5)

How much bass does the Monoprice 12" slim subwoofer produce?

Will the Monoprice 12" slim subwoofer fit under a LoveSac seat or couch?

Does the Monoprice 12" powered slim subwoofer include a cable?

Does the Monoprice 12" slim subwoofer need a sub output or special connection?

Can this Monoprice subwoofer be used with a stereo receiver or soundbar setup?

Join The Conversation

33 Comments

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