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vid1900 16.5K Views
Jul 3, 2026 2:03 AM

15" Monoprice SW-15 600W RMS (800W Peak) Powered Subwoofer

$250

$500

50% off
+ Free S&Hat Monoprice
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Monoprice has 15" Monoprice SW-15 600W RMS (800W Peak) Powered Subwoofer (41499) on sale for $499.99 - 50% with promo code SHOP50 in cart = $249.99. Shipping is free.

Thanks to Community Member vid1900 for sharing this deal.

Details:
  • 15" front-firing powered subwoofer
  • 600W RMS (800W peak) amplifier
  • Ported design with down-firing port
  • 30-150 Hz frequency response
  • Variable phase control
  • Variable low pass filter
  • Dimensions: 18.1" x 21.0" x 22.7" (460 x 533 x 577 mm)
  • Weight: 66.1 lbs. (30.0 kg)

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.6 out of 5 stars from customer reviews.
  • At the time of this posting, our research indicates that this is $150 lower than the next best comparable online prices starting from $399.99.

Original Post

Written by vid1900
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Monoprice has 15" Monoprice SW-15 600W RMS (800W Peak) Powered Subwoofer (41499) on sale for $499.99 - 50% with promo code SHOP50 in cart = $249.99. Shipping is free.

Thanks to Community Member vid1900 for sharing this deal.

Details:
  • 15" front-firing powered subwoofer
  • 600W RMS (800W peak) amplifier
  • Ported design with down-firing port
  • 30-150 Hz frequency response
  • Variable phase control
  • Variable low pass filter
  • Dimensions: 18.1" x 21.0" x 22.7" (460 x 533 x 577 mm)
  • Weight: 66.1 lbs. (30.0 kg)

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.6 out of 5 stars from customer reviews.
  • At the time of this posting, our research indicates that this is $150 lower than the next best comparable online prices starting from $399.99.

Original Post

Written by vid1900

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Community Reviews

The SW-15 is a big, budget home theater sub that is praised for strong output and surprisingly deep bass for the money. Audioholics measurements are cited as showing about 117.5 dB at 63 Hz, around 107 dB at 30 Hz, and roughly 98 dB at 20 Hz, with reports that it can pressurize a medium living room and work well for music and movies. The main cautions are reliability and support, with amp failures and dead units reported around the one to two year mark, and some pointing to better warranty or service from RSL and Dayton alternatives.

  • The subwoofer can reach very high output at 30 Hz and 20 Hz according to Audioholics CEA-2010 based calculations.

  • The deal can be cheaper with the SHOP50 coupon that applies to the 12-inch variant and many other Monoprice items.

  • The SW-15 can provide audible low-frequency information down to around 20 Hz across multiple music genres.

  • The SW-15 can work as a soundbar sub mod because it includes high-level inputs.

  • The plate amp can fail after about one year, and replacement may cost more than buying a new sub.

  • The listing specs may omit voice coil size and resonant frequency information, which makes system details harder to verify.

  • Amazon reviews are not encouraging for this product.

  • Monoprice after-sales support may require shipping back the entire Monolith sub for amp issues instead of sending a replacement amplifier.

Common Questions (5)

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72 Comments

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Jul 4, 2026 5:13 AM
9.1K Comments
Joined Nov 2008
hungrytigerJul 4, 2026 5:13 AM
9.1K Comments
Quote from fintlewoodlewix View quoted comment :
Take your sub. Listen to a song. Turn on high pass at 30 hz. Listen. Turn off high pass. Listen. Go back and forth a few times. A LOT of music shows a difference for A LOT of genres.
Yep! Clean and deep is the word.

Only for you young folks!laugh out loud
Jul 4, 2026 5:30 AM
3.5K Comments
Joined Jul 2017
fintlewoodlewixJul 4, 2026 5:30 AM
3.5K Comments
Quote from hungrytiger View quoted comment :

Yep! Clean and deep is the word.

Only for you young folks!laugh out loud
I heard this on classical (non organ), hip hop, electronica, and rock. I didn't try our jazz or country, but I bet most songs have significant info down to 20 hz, and the thing about those low hz is that when you're old, you can still hear them, unlike the high frequencies. A low pass filter on 15k? I can turn it on and off all day and won't notice a difference.
Jul 4, 2026 5:34 AM
9.1K Comments
Joined Nov 2008
hungrytigerJul 4, 2026 5:34 AM
9.1K Comments
Quote from fintlewoodlewix View quoted comment :
I heard this on classical (non organ), hip hop, electronica, and rock. I didn't try our jazz or country, but I bet most songs have significant info down to 20 hz, and the thing about those low hz is that when you're old, you can still hear them, unlike the high frequencies. A low pass filter on 15k? I can turn it on and off all day and won't notice a difference.
Same on a bass for a jazz song.
Jul 4, 2026 6:40 AM
3.5K Comments
Joined Jul 2017
fintlewoodlewixJul 4, 2026 6:40 AM
3.5K Comments
Quote from hungrytiger View quoted comment :

Same on a bass for a jazz song.
All you young hep cats and your jazzymatazz.
1
Jul 4, 2026 6:41 AM
640 Comments
Joined Aug 2015
bbierJul 4, 2026 6:41 AM
640 Comments
Quote from ROOSKIE View quoted comment :


It does but not that often.
Some large pipe organs, some very large drums, some grand piano's hit around 30hrz
Some electronica, some dub-step, some hip hop/rap
If you need it you need it.
You can not really hear 30hrz at any SPL level though you can feel it. Anything you hear at 30hrz is cabinet vibrations or vibrations in things in the room - or distortions produced in addition to the 30hrz 'note', such as hearing 60hrz as the 2nd order harmonic distortion.

A 4 string bass hits 41hrz

Most typical home sized rooms add about 10db/per octave below 100hrz so a sub that is 10db down at 30hrz is actually not so when in room.
>You can not really hear 30hz at any SPL level though you can feel it. Anything you hear at 30hrz is just distortions and vibrations of things in the room.

That's just not true. I'm in my mid-30's and my $700 Klipsch RP-1400 slams at 20hz. S'not just "cabinet vibrations," that sum bih will pressurize my living room at a subterranean frequency
1
Jul 4, 2026 11:41 AM
9.8K Comments
Joined Aug 2013
xtpJul 4, 2026 11:41 AM
9.8K Comments
Quote from ROOSKIE View quoted comment :
Distortion down low is an issue but yah I get what you are trying to say.
That said high levels of distortion in the bass can sound very muddy or overly warm - or even like crap.

If you have a 30hrz tone playing loudly and harmonic distortion ramps up to -10db (which not uncommon when stuff is abused or not understood well) then you have can have an extra- not in the recording- 60hrz tone (2nd order) and a 90hrz tone (3rd order) play at half the perceived volume of the original tone. That will sound muddy and that is harmonic distortion. Non harmonic distortion such as Doppler(very audible) and intermodular sounds much worse and the whole thing can sound like crap over driven.

So yah buy a clean sub with enough amplifier power to handle the job.

There are so many sources of distortion in an untreated room, it's simply cost prohibitive for people to hunt them all down. Ontop of it being not very noticeable for low frequencies.

The scientific jargon here really only applies to measurements, not perceptual experience.

Your book shelf + that 1 book, just the right size, could have a 20db vibration, you'd never pick it out in real content. Even most people's ceiling insulation makes ruffling noises.
Jul 4, 2026 11:48 AM
9.8K Comments
Joined Aug 2013
xtpJul 4, 2026 11:48 AM
9.8K Comments
Quote from supermanrob View quoted comment :
You can always add a DSP to any box.

Not to mention, in reality everything can't be "smooth" out through eq regardless of horsepower.

I'm curious to know what sub and DSP you're using?
Especially if you think a $1k sub that peaks at "60-100hz" will sound like "trash"!

Take any $1000 sub, look at the promotional material, with its flat to 20hz graph.

Put that sub in your room, measure it, UNRECOGNIZABLE.

Show me 1 sub that measures the same between the advertisement page and Your-Room. yummy
1

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Jul 4, 2026 12:23 PM
17.8K Comments
Joined Nov 2003
deshwasiJul 4, 2026 12:23 PM
17.8K Comments
Between this and rsl10e which one is better for music? Or is there a better one in $300 range?
Jul 4, 2026 3:08 PM
13.4K Comments
Joined Jul 2010
supermanrobJul 4, 2026 3:08 PM
13.4K Comments
Quote from xtp View quoted comment :
Take any $1000 sub, look at the promotional material, with its flat to 20hz graph. Put that sub in your room, measure it, UNRECOGNIZABLE. Show me 1 sub that measures the same between the advertisement page and Your-Room. yummy
lol great example of the fallacy that's been going on for decades.

You tell ROOSKIE "the scientific jargon here really only applies to measurements, not perceptual experience".
To defend the question I asked you, what do you do..... you ask/point to scientific jargon!!!

Science has its place in all this, the fallacy is using it to define "perceptual experience" especially universally!
The irony is science has a big part on why!

When someone can point out all these measurements/distortions by just listening, then it might matter.
Even then it would only matter to that one person in that certain spot......big part because of science!
Ultimately "perceptual experience" has no universal "great" or "trash" definition.

Imo science is the ultimate confirmation bias.
It's only useful purpose in this context is for the people that feel the need to be right with their opinion and use it to conflate the two as proof!
Unfortunately, all we can do is to continue to play the game.
Last edited by supermanrob July 4, 2026 at 08:57 AM.
3
Pro
Jul 4, 2026 3:51 PM
1.6K Comments
Joined Sep 2018
Zorba1446
Pro
Jul 4, 2026 3:51 PM
1.6K Comments
Quote from deshwasi View quoted comment :
Between this and rsl10e which one is better for music? Or is there a better one in $300 range?
I'd take the 10e.
1
Jul 4, 2026 4:12 PM
13.4K Comments
Joined Jul 2010
supermanrobJul 4, 2026 4:12 PM
13.4K Comments
Quote from deshwasi View quoted comment :
Between this and rsl10e which one is better for music? Or is there a better one in $300 range?
Many IFs in that question.
Generally speaking likely the 10e would be the one to gamble on ime.

The irony here is people often insinuate/say "bigger is better"!
This is clearly bigger in almost every way!
3
Jul 4, 2026 4:59 PM
1.8K Comments
Joined Jan 2014
olsonbri1Jul 4, 2026 4:59 PM
1.8K Comments
Quote from rcaguy5 View quoted comment :
I'll begin, 15 inches and only goes down to 30hz?
My first question as well
Original Poster
Pro
Jul 4, 2026 11:35 PM
3.5K Comments
Joined Sep 2016
vid1900
Original Poster
Pro
Jul 4, 2026 11:35 PM
3.5K Comments
Here is test results from Audioholics
Jul 5, 2026 2:37 AM
164 Comments
Joined Jul 2020
BlueMallard431Jul 5, 2026 2:37 AM
164 Comments
Quote from deshwasi View quoted comment :
Between this and rsl10e which one is better for music? Or is there a better one in $300 range?
Hard to say without hearing them. One thing to consider is your mains. I have real nice floorstanders that are flat down to 50 hertz, so that's where I crossover. I would guess that this one, having a bigger driver and amp, would suit me better.
With many stand mount speakers I would crossover at a higher frequency (a 6 1/2 inch speaker will be distorted by bass, which can affect the midrange it is also trying to produce). My guess is that the RSL will sound better from 50-150 hertz, so I would guess it's better for "bookshelfs".
An important consideration would be longevity. The RSL is likely be much more dependable. Also, consider the footprint. If you ever upgrade, you can almost always find a use for a smaller sub (bedroom, etc).
Last edited by BlueMallard431 July 4, 2026 at 11:39 PM.

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Jul 5, 2026 3:34 AM
9.1K Comments
Joined Nov 2008
hungrytigerJul 5, 2026 3:34 AM
9.1K Comments
Quote from fintlewoodlewix View quoted comment :
All you young hep cats and your jazzymatazz.
Sorry OP for the high jack! Never bought a failed product from Monoprice.

I would go large if you can afford it!

My woofer was different as it was a medium throw acoustic suspension larger voice coil voice of theater set up. Can't find it online. My Sansui speakers were a good replacement when I downsized. Size is an issue for folks that are downsizing.

https://vintagetechnologyarchive..../model-15/

Had solid oak plywood built by my brother for the cabinets.

WHAM (only one song) and an unknown jazz group I used for demos.

https://www.youtube.com/watch?v=dZz075kjNzE

https://www.youtube.com/watch?v=C8xt5BGegj8

https://www.youtube.com/watch?v=h...rt_radio=1



https://www.youtube.com/watch?v=j...1&index=21

https://www.youtube.com/watch?v=a...1&index=55

https://www.youtube.com/watch?v=X...h1&index=4
Last edited by hungrytiger July 4, 2026 at 10:39 PM.

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