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PEX Dayton Audio SUB 1200 12" 120 Watt Powered Subwoofer P5477539PEX-300-629 https://cdnimages.opentip.com/full/PEX/PEX-300-629.jpg Dayton Audio SUB 1200 12" 120 Watt Powered Subwoofer Manufacturer Part Number: SUB-1200The Dayton Audio SUB-1200 12\" powered subwoofer system is capable of delivering realistic, room-shaking home theater bass effects-even in larger rooms.Key Features: Downward-firing flared port design for clean, powerful bass Selectable \"Auto-on\" mode Heavy duty long-throw 12\" woofer Perfect for small home theaters or listening rooms Unobtrusive textured black vinyl finish Dayton Audio SUB-1200 12\" 120 Watt Powered SubwooferAdd thrilling low-frequency effects to your home cinema experience!The Dayton Audio SUB-1200 12\" powered subwoofer system is the perfect addition to any home theater system. This powered sub features a bottom-firing, flared port, bass reflex design for reduced port noise and increased bass response. It also utilizes a long-throw 12\" woofer and up to 120 watts of house-shaking power.Onboard connectivity makes this an easy-to-add and easy-to-adjust solutionThe amplifier features high and low level inputs and high level outputs, a phase switch, independent volume control, an auto on/off switch (activated by an input signal) and a variable 12 dB electronic low pass filter. This compact sub is finished in an unobtrusive black vinyl that will complement any decor.Power and punch to spare, but from a ridiculously compact enclosureSpecifications: Power output: 120 watts RMS Frequency response: 25-140 Hz Box design: Ported Inputs: RCA line level & speaker level Outputs: Speaker level Crossover frequency control: Continuously variable from 40 Hz to 140 Hz @ 12 dB/octave Phase switch Auto on/off Power requirements: 120 VAC, 60 Hz Dimensions (plastic feet included): 16-3/4\" H x 16-3/16\" W x 17-3/4\" D.Features:1. Line Level InputsThe line level inputs are used to connect pre-put or preamplifier outputs directly to the subwoofer amplifier\'s internal crossover. These inputs are summed to mono. This is the preferred way to connect the subwoofer amplifier. If you have a mono line level signal from a \"Pro-Logic\" or \"Dolby Digital\" receiver use the right \"red\" input. Note: If a LFE mono output is connected, set the crossover point to maximum.2. High Level InputsIf preamplifier outputs are not available, use the high-level (speaker) inputs. The speaker level inputs can be connected directly to the amplifier by inserting the speaker wire.3. High Level OutputsThere are also high level outputs which can be used to connect to main speakers or to another powered subwoofer with high level inputs. Note: High level outputs are paralleled to the high level inputs with no high pass filter.4. Crossover Frequency ControlContinuously variable from 40 Hz at 12 dB/octave. Set the frequency control to where the audio does not sound \"muddy\", normally between 60-80 Hz. Note: If a LFE mono output is connected set the crossover point to maximum.5. Gain ControlAdjusts the output level of the subwoofer. Set the level to where the bass frequencies blend with the other speakers. Note: Most people have a tendency to set the level too high, which makes the audio sound \"boomy\".6. Phase SwitchSelectable between 0° and 180°. This assists subwoofer placement. The correct position will be the one that provides the most apparent bass output.7. Power Switch (Auto On/Off)When the power is in the auto position, the amplifier will automatically turn on when a signal is present. Note: In auto/off mode, the power on LED is always on (red), even when amp is in rest mode (off). The power LED will turn green when the unit is activated.Product Details BrandDayton Audio ModelSUB-1200 Part Number300-629 UPC844632094118 Unit of MeasureEach Weight44.65 Product Specifications Woofer Diameter12\" 5477539 844632094118 57.0400lbs 0.00 0.00 0.00
Dayton Audio
191.88 2025-05-10 Out of Stock
customer review - by , June 6, 2023
5/ 5stars
I'm not a high-end audiophile - but do mix music for a living. And this thing is great for 90 of the people wanting a nice sound system for their home. I've owned sony Klipsch subs, and this thing holds its own to both. I would highly recommend this sub...
customer review - by , April 4, 2023
5/ 5stars
This Sub-woofer sounds great! Much better than I expected for the money. I will note it's quite a bit bigger than I anticipated - measure your space. But I'd buy this again without hesitation. The sound quality works well on all the bass inputs I've tried: electric bass, double bass viol, organ. My room is not huge (12 x 15) and it fits perfectly.
customer review - by , April 4, 2023
5/ 5stars
Deep, deep rumble, nice build quality. Nice price.
customer review - by , February 2, 2023
5/ 5stars
This woofer pounds pretty good for under $200. Not as heavy as my Polk, but as long as the amp doesn't die like Polk's did every 3 years this bad boy will be well worth the purchase.
customer review - by , February 2, 2023
5/ 5stars
This is my second one of these, one upstairs and one downstairs. It's a great sub for the money and it can rattle the windows if your a bass-head (I'm not but at normal levels it performs really well!). If you're in the marked and this falls into your budget, it's worth a try.
customer review - by , January 1, 2023
4/ 5stars
Pros Good sound for the price. Con Laminate a little distorted on the corner edgess.
customer review - by , December 12, 2022
5/ 5stars
This replaces an aging Polk subwoofer, which had started making odd noises. It is really an upgrade in terms of sound quality!
customer review - by , September 9, 2022
4/ 5stars
Definitely improved the sound quality at our lake place. While not as good as the 600 watt era sub at home it was much better than expected. It is a solid sub for a smaller room. Would buy again.
customer review - by , August 8, 2022
5/ 5stars
This thing sounds great, but I wish I would have checked the dimensions before buying, because it was a struggle to fit it in my small living room lol
customer review - by , August 8, 2022
5/ 5stars
My receiver has a built in crossover, so I haven't used its crossover, but that polarity switch definitely makes a difference. I also have a 10 one that I use with my home DJ setup. Great sound for the price, and very flexible with where in the room you can place it.

Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer

stars Rating 5 | 29 reviews
Brand Dayton Audio
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UPC: 844632094118
SKU: PEX-300-629
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Product Description

Manufacturer Part Number: SUB-1200

The Dayton Audio SUB-1200 12" powered subwoofer system is capable of delivering realistic, room-shaking home theater bass effects-even in larger rooms.

Key Features:
  • Downward-firing flared port design for clean, powerful bass
  • Selectable "Auto-on" mode
  • Heavy duty long-throw 12" woofer
  • Perfect for small home theaters or listening rooms
  • Unobtrusive textured black vinyl finish


Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer


The Dayton Audio SUB-1200 12" powered subwoofer system is the perfect addition to any home theater system. This powered sub features a bottom-firing, flared port, bass reflex design for reduced port noise and increased bass response. It also utilizes a long-throw 12" woofer and up to 120 watts of house-shaking power.


The amplifier features high and low level inputs and high level outputs, a phase switch, independent volume control, an auto on/off switch (activated by an input signal) and a variable 12 dB electronic low pass filter. This compact sub is finished in an unobtrusive black vinyl that will complement any decor.


Specifications: Power output: 120 watts RMS Frequency response: 25-140 Hz Box design: Ported Inputs: RCA line level & speaker level Outputs: Speaker level Crossover frequency control: Continuously variable from 40 Hz to 140 Hz @ 12 dB/octave Phase switch Auto on/off Power requirements: 120 VAC, 60 Hz Dimensions (plastic feet included): 16-3/4" H x 16-3/16" W x 17-3/4" D.

Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer

1. Line Level Inputs
The line level inputs are used to connect pre-put or preamplifier outputs directly to the subwoofer amplifier's internal crossover. These inputs are summed to mono. This is the preferred way to connect the subwoofer amplifier. If you have a mono line level signal from a "Pro-Logic" or "Dolby Digital" receiver use the right "red" input. Note: If a LFE mono output is connected, set the crossover point to maximum.

2. High Level Inputs
If preamplifier outputs are not available, use the high-level (speaker) inputs. The speaker level inputs can be connected directly to the amplifier by inserting the speaker wire.

3. High Level Outputs
There are also high level outputs which can be used to connect to main speakers or to another powered subwoofer with high level inputs. Note: High level outputs are paralleled to the high level inputs with no high pass filter.

4. Crossover Frequency Control
Continuously variable from 40 Hz at 12 dB/octave. Set the frequency control to where the audio does not sound "muddy", normally between 60-80 Hz. Note: If a LFE mono output is connected set the crossover point to maximum.

5. Gain Control
Adjusts the output level of the subwoofer. Set the level to where the bass frequencies blend with the other speakers. Note: Most people have a tendency to set the level too high, which makes the audio sound "boomy".

6. Phase Switch
Selectable between 0° and 180°. This assists subwoofer placement. The correct position will be the one that provides the most apparent bass output.

7. Power Switch (Auto On/Off)
When the power is in the auto position, the amplifier will automatically turn on when a signal is present. Note: In auto/off mode, the power on LED is always on (red), even when amp is in rest mode (off). The power LED will turn green when the unit is activated.

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
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By Mark
Date: July 07, 2021
Ordered this from parts express 6 years ago and it's held up very nicely so far as an addition to the studio monitors for my PC. Sounds great, way louder than I'll ever need it to be, no rattles, and has all of the inputs I need. Couldn't recommend this enough. Also makes a nice little table when necessary.
Rating: 5 stars [5 of 5 Stars!]
By raspeaker
Date: May 29, 2021
I sold high-end audio for many years and been an audiophile for many more. I have used this Dayton subwoofer in one room of my house for about two years now and have no complaints. It is surprisingly tight and accurate, more so than most 12 subwoofers, certainly more so than any approaching the low price of this sub. When called upon it can produce pounding bass in home-theater use, though not as much as some more expensive subs this size. But at this price, you can buy two for less than the price of one of those!
Rating: 5 stars [5 of 5 Stars!]
By philip martin
Date: April 10, 2021
Add on for dual subs.
Rating: 5 stars [5 of 5 Stars!]
By Timothy G.
Date: March 19, 2021
Great sub for the price. I bought the 12 by mistake! Parts express was very helful with the return. I now have the 10 version witch actually fits where I nee it to. Same great quality.
Rating: 5 stars [5 of 5 Stars!]
By Wood
Date: February 18, 2021
This sub is only good in the sense that it adds bass to your system. The quality of the bass is a different story. I used REW to see what the sweeps looked like and found that it drops off significantly at 30hz so don't expect any deep rumbles; it peaks way high at 50hz and is full of peaks and nulls throughout the small range in which it does play. The amplification seems like an afterthought, based on the amount of gain needed to achieve an 80dB calibration. The best sub $200 subwoofer is the Polk PSW10; don't jump on the hype train for these Dayton subs.
Rating: 5 stars [5 of 5 Stars!]
By Steven A. Janowsky
Date: December 18, 2020
Great base and solid construction not a bad price for a powered sub of this size
Rating: 5 stars [5 of 5 Stars!]
Items 19 - 24 of 29 reviews
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