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KillJoyEX 70.7K Views
Mar 17, 2022 8:42 AM

15" Monoprice Monolith M-15 V2 THX 1000 Watt Subwoofer Amplifier

$1,200

$1,500

20% off
& More + SD Cashback + Free S&Hat Monoprice
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Deal Details
Monoprice has select Monoprice Monolith V2 THX Certified Ultra Subwoofers on sale for the prices listed. Shipping is free. To earn Slickdeals Cashback, before purchase, follow the cashback instructions below (PC extension required, before checkout).

Thanks to Community Member KillJoyEx and QA Staff Member mattzane227 for finding this deal.

Available:About this product:
  • The Monolith THX certified subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays down to well under 20Hz, the Monolith subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music. The Monolith subwoofer cabinets have been redesigned for a sleeker look, rounded edges, and an inset subwoofer for a better aesthetic appearance.

Editor's Notes

Written by CChoiVA
  • About this product:
    • Includes a 5-year replacement warranty
    • The 15" Monolith by Monoprice M-15 V2 THX Certified Ultra 1000 Watt Subwoofer Amplifier (42851) features cabinet & internal bracing, single 88.5mm port with inner and outer flares, port is used to ensure high SPL capability at low frequency
  • About this store:
    • Details of Monoprice's return policy here.

Original Post

Written by KillJoyEX
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Monoprice has select Monoprice Monolith V2 THX Certified Ultra Subwoofers on sale for the prices listed. Shipping is free. To earn Slickdeals Cashback, before purchase, follow the cashback instructions below (PC extension required, before checkout).

Thanks to Community Member KillJoyEx and QA Staff Member mattzane227 for finding this deal.

Available:About this product:
  • The Monolith THX certified subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays down to well under 20Hz, the Monolith subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music. The Monolith subwoofer cabinets have been redesigned for a sleeker look, rounded edges, and an inset subwoofer for a better aesthetic appearance.

Editor's Notes

Written by CChoiVA
  • About this product:
    • Includes a 5-year replacement warranty
    • The 15" Monolith by Monoprice M-15 V2 THX Certified Ultra 1000 Watt Subwoofer Amplifier (42851) features cabinet & internal bracing, single 88.5mm port with inner and outer flares, port is used to ensure high SPL capability at low frequency
  • About this store:
    • Details of Monoprice's return policy here.

Original Post

Written by KillJoyEX

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Top Comments

DJConan
622Comments
148Reputation
FedEx Freight called to schedule delivery and told me it was 228 pounds. I will be at the office during delivery, so I told my wife to take it downstairs for me.
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macpro
1.3KComments
161Reputation
It's actually 60 kg.... which is 132 pounds!!

This thing is a monster.

I think that person was fishing for a reaction.
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jumon
120Comments
69Reputation
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
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163 Comments

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Mar 18, 2022 4:29 PM
1.3K Comments
Joined Feb 2010
ROOSKIEMar 18, 2022 4:29 PM
1.3K Comments
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
Are you sure you correctly set the subwoofer up?
What size is your room?
1
Pro
Mar 18, 2022 4:29 PM
9.4K Comments
Joined Jul 2005
fourml8r
Pro
Mar 18, 2022 4:29 PM
9.4K Comments
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
i agree. both are decent products, but if you are looking for the higher quality / better sounding sub, SVS is a better choice, but not everyone has the budget for that.
2
5
Mar 18, 2022 4:44 PM
3K Comments
Joined Nov 2008
automatedMar 18, 2022 4:44 PM
3K Comments
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
Thanks. Not sure why you're getting TD here but this is a helpful comparison.
1
3
Mar 18, 2022 6:16 PM
698 Comments
Joined Jan 2009
Swiss82Mar 18, 2022 6:16 PM
698 Comments
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
Did you do any troubleshooting? I'm guess you have. While searching, did not come across other peoples experiences that were similar not yours? I've not done much research on them, but the little I have done I have not come across much of what you mentioned
1
Mar 18, 2022 6:25 PM
622 Comments
Joined Jul 2007
DJConanMar 18, 2022 6:25 PM
622 Comments

Our community has rated this post as helpful. If you agree, why not thank

FedEx Freight called to schedule delivery and told me it was 228 pounds. I will be at the office during delivery, so I told my wife to take it downstairs for me.
3
9
1
Mar 18, 2022 6:37 PM
7 Comments
Joined Oct 2013
Ntrpy22Mar 18, 2022 6:37 PM
7 Comments
I know this is apples and oranges but I got their Sw15 for $250 and it does a surprisingly decent job. Not going to compare at all to this or an SVS, but it is also ~1/5 the price.
Mar 18, 2022 6:41 PM
13.4K Comments
Joined Jul 2010
supermanrobMar 18, 2022 6:41 PM
13.4K Comments
Quote from Swiss82 View quoted comment :
Seems like the sale price was 999, then 1099, now up to 1199....
I'm not sure if this increasing sale price is due to this being V2, although I don't know the difference between V1 and V2, or maybe inflation, or maybe just not as good as a sale as before.....
Thoughts.....?
Probably both especially with everything that is going on now.

I compared both versions and sound wise, performance is incremental at best.
Unless they have another sale on V1(unlikely) this is the new sale price.

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Mar 18, 2022 7:10 PM
13.4K Comments
Joined Jul 2010
supermanrobMar 18, 2022 7:10 PM
13.4K Comments
Quote from automated View quoted comment :
I have an svs pb12, in a space that's basically 12 x 16 but with an open floorplan. Would this be overkill as an upgrade?
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
I have compared the brands in multiple layouts and I would agree overall Monolith sounds more "muddy" vs SVS.

To be fair you would probably be better off comparing it to the 12/13" Monolith but would still be more muddy IMO.

Both are great brands, it comes down to preference & expectations on which one choose.
1
2
Mar 18, 2022 7:10 PM
1K Comments
Joined Oct 2020
jcnixMar 18, 2022 7:10 PM
1K Comments
Quote from supermanrob View quoted comment :
Probably both especially with everything that is going on now.

I compared both versions and sound wise, performance is incremental at best.
Unless they have another sale on V1(unlikely) this is the new sale price.
So 800 is the new deal price, and no chance on the 12 coming down to 700 anytime soon?
Mar 18, 2022 7:26 PM
13.4K Comments
Joined Jul 2010
supermanrobMar 18, 2022 7:26 PM
13.4K Comments
Quote from jcnix View quoted comment :
So 800 is the new deal price, and no chance on the 12 coming down to 700 anytime soon?
IMO yes V2 was recently released and with everything going on now don't see it dropping down to $700 anytime soon.

Keep in mind they hold these sales regularly so it will likely pop up again in the near future IMO.
Pro
Mar 18, 2022 10:00 PM
3.1K Comments
Joined Aug 2005
leecm
Pro
Mar 18, 2022 10:00 PM
3.1K Comments
I live in a subdivision where the houses are pretty close together. Will this piss by neighbors off?
1
Mar 19, 2022 12:26 AM
369 Comments
Joined Sep 2012
kcortez101Mar 19, 2022 12:26 AM
369 Comments
The only thing you gotta worry about is when the FedEx driver has to figure out how to get it to your door.
1
Mar 19, 2022 12:31 AM
2K Comments
Joined Sep 2012
McWettyMar 19, 2022 12:31 AM
2K Comments
Quote from jcnix View quoted comment :
So 800 is the new deal price, and no chance on the 12 coming down to 700 anytime soon?
Just throw this out thereā€¦ for $700 I bought an SVS 3000 micro and it's amazing. Just good for thought.
2
Mar 19, 2022 12:36 AM
1.4K Comments
Joined Nov 2003
JesusFreakMar 19, 2022 12:36 AM
1.4K Comments
Quote from jumon View quoted comment :
Bought this in the last sale thinking it would be a great upgrade to my PB12-NSD. Despite being much larger and heavier, it is much more "muddy" than the PB12 even after tuning and having to keep all the port plugs (without the plugs, it sounded like a cheap sub that was being over-powered). If I could return it easily, I would but it was an effort of will for us to even get this moved into my theater room and of course, placement is limited due to its size/weight. I know others will disagree, but stick with SVS.
Seems odd that they would be "muddy" and also THX certified. I'm guessing that you either did not EQ them properly for your space, are an SVS shill, or both.
13

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Mar 19, 2022 1:05 AM
50 Comments
Joined Nov 2017
AlwaysCustom4MeMar 19, 2022 1:05 AM
50 Comments
I got the V1 when it dropped to $999. Not sure on the V2s upgradesā€¦ but the thing rocks the house at 1/3 volume and produces some insane lows!

As for the muddy comments, I run mine with the center port plugged. I feel it has good, accurate punch on my system consisting of a Pioneer amp and Klipsch reference premiere supporting speakers.
Last edited by AlwaysCustom4Me March 18, 2022 at 06:10 PM.

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