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Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer

Brand:|Model: SUB-1200|Part # 300-629
The Dayton Audio SUB-1200 12" powered subwoofer system is capable of delivering realistic, room-shaking home theater bass effects—even in larger rooms.
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List Price$229.99
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Part # 300-629
  • 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

Product Details

Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer

Add 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 solution

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.

Power and punch to spare, but from a ridiculously compact enclosure

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 (rubber feet included): 16-3/4" H x 16-3/16" W x 17-3/4" D.

Are you ready to cut the cord?

New! Add the 300-580 Dayton Audio Sub-Link XR wireless subwoofer kit to any Dayton Audio powered subwoofer, for limitless placement possibilities and great bass without wires! Click here to go wireless.


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.

Product Specifications
  • Woofer Diameter12"
Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer
  • BrandDayton Audio
  • ModelSUB-1200
  • Part Number300-629
  • UPC844632094118
  • Product CategoryPowered Subwoofers
  • Unit of MeasureEA
  • Product Rating
    (194 Reviews)
  • Weight44.65 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer
Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer is rated 4.6856 out of 5 by 194.
Rated 4 out of 5 by from Great valueI received the sub-1200 a few days after Xmas. Initially it sounded like it was made out of card board. But after a week or so of playing it broke in. It now impresses me. It goes deep and fills not only my listening room but my house. I did have some boomyness but I changed the crossover to my main speakers which try to put out bottom end but are not as effective as the sub-1200. It's a great addition to my ht. Solid low end for cheap.
Date published: 2016-01-17
Rated 4 out of 5 by from Decent subwoofer with a few quirksI bought this subwoofer this week to replace an 8" subwoofer that was too small for the room (L-shaped living room open to the kitchen on one end). This larger, more powerful subwoofer definitely works better for filling in the bottom end on 5.1 movies and 2.1 music, but it's not perfect. As many have noted, the "standby" feature is not consistent, or rather it's consistently bad. The subwoofer turns itself off unless the gain is turned up very high (on either the subwoofer or in the receiver's settings). Solution is to leave the sub on all the time, which is fine, but it would be nice to fix the sensitivity of the standby switch so this can be avoided. Also, the 12" woofer is slower than the 8" it replaced, which makes sense. It's fine for movies, of course, but it would be nice if it were just a bit faster to keep up with Mingus' double-bass riffs. All in all, however, it's a great sub for the price, even though the price has risen to the point where it is no longer the steal it was just a few months ago.
Date published: 2016-01-15
Rated 4 out of 5 by from Fantastic Powered 12" SUB with just enough power!The negative reviews are from people that either received a defective sub or don't know how to place a sub properly in with your main speakers.I have had a 12" for well over 3 years now and have been very impressed with it's performance. Saying it's underpowered is just not accurate and here is a example why: The Polk 505 is rated at 300 watts and I was never able to push it above the 50% volume mark or it would simply distort! So YES 12 watts is enough power. I did do A/B comparisons between the Dayton 12" and the Polk 505 12" that everyone seems to rave about. What I discovered is that the Polk 505 uses a very old rear slot ported design that really not good for music at all. It's fine for most DTS movies but just can't cut it with all that port noise with music.Sometimes that old adage" "You get what you pay for" is not accurate! In this case your getting much more than you pay for and now with a 5 year warranty this Dayton is worthy of competing with even more subs.
Date published: 2016-01-13
Rated 5 out of 5 by from 12 inch thunder box !I snagged this for $109 on sale and I am not disappointed !It truly reproduces sounds down to 25 hertz. I run it about half way up and it sounds amazing with my home theater system. I highly recommend this sub !
Date published: 2016-01-06
Rated 5 out of 5 by from I actually like the sensitivity level!I purchased the Dayton1200 because the amp failed on my Polk PSW110. It would have cost more to replace the amp. I was never happy with the psw110 and I never knew why until I got the Dayton. I did not know a sub can affect the highs and mids on your main speakers so much. I not only have better bass, I now have an overall better sound. I actually like the cut in /out sensitivity on it. It's excellent for night listening when i want it off most of the time. My old sud never wanted to cut out. I had to get up and walk over to it and cut it off manually. If you adjust your front , center, rear speakers levels lower and sub levels higher on your receiver, then turn up the master volume on your receiver a little, your sub will be more sensitive and you will have more room for adjustments at the sub. It is working great for me and I don't miss the money spent. Cheaper than making grocery. (or buying grocery if your not from New OrleansLol.
Date published: 2016-01-01
Rated 2 out of 5 by from OK for a second sub.....underpowered/underwhelmingI needed a second sub for a larger home theater system. I'm using a HSU Research VTF-15H MK2 as the main sub near the seating and wanted one for the front corner to extend the base. The bass is tight enough but I cannot get enough low frequency response and punch regardless of the crossover and level.....amp seems to struggle to keep up with my other sub. I have multiple controls on my amp to adjust distances, levels, crossovers, and characteristics of each channel of my 7.1 system yet cannot get the sub to provide the extra punch I was looking for.I would suggest the sub only for small systems but definitely not a home theater or large room system where you need wall shaking bass.
Date published: 2015-12-22
  • 2016-02-10T06:34CST
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email  for a prompt reply.
Dayton Audio SUB-1200 12" 120 Watt Powered Subwoofer

I have received an old SUB-1200 from a friend with a blown subwoofer & was hoping you could recommend a replacement subwoofer. What 4 Ohm subwoofer would you recommend for the SUB-1200's ported enclosure as a replacement?

Asked by: Pain for Fun
We do not sell the driver separately for this but the Dayton classic sub, #295-204 will do well in this airspace.
Answered by: Chrisf
Date published: 2016-02-04

i want to know where can i find the replacement subwoofer for the sub1200 i looked everywhere for it and i cant find it i have seen other dayton audio subwoofers but i dont see this one

Asked by: delo
I am sorry, we do not offer this woofer separately. The closest are the Dayton classic sub and the GRS but they are not an exact replacement.
Answered by: Chrisf
Date published: 2016-01-29

Someone earlier asked about using this subwoofer in a "live sound" setting.  I want to do the same - to use it to amplify the signal coming from a Yamaha Subkick like 6.5" speaker used as a microphone on a bass drum. If this is not recommended, why not?

Asked by: Swive
Pro sound setups are often run using balanced connections that have a higher signal level. That can be a problem as this sub is intended for a standard home -10 level. The efficiency is also much lower than what you would typically see in a pro setup. That may limit the amount of output that is possible.
Answered by: Chrisf
Date published: 2016-01-27

I'm considering buying two of these. I'd be connecting from my second set of L/R preamp outs to each sub's mono input. My only concern is that somebody wrote I'll lose 6db of output by using the mono sub inputs. Is that true? Thanks.

Asked by: JohnatClark

What is the Xmax (@ 70% BL) of this driver? Thnx

Asked by: Spanyerd
Unfortunately we do not have these specs available for the driver in this subwoofer.
Answered by: MattP
Date published: 2015-12-28

What is frequency range where is it guaranteed not to distort? I have a sub woofer guaranteed not to distort down to 20 HZ. Is this comparable? What are the specs? Many thanks

Asked by: Joy W
There really is no such thing. The only time you will have noticeable distortion is if the amp clips, the woofer is over driven or it unloads below the tuning frequency at high volume levels. There will always be some form of distortion present with any speaker system but as long as everything is played within its limits the distortion should not be audible - especially with a subwoofer.
Answered by: MattP
Date published: 2016-01-14
  • 2016-02-10T07:26CST
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