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MTX > 
Item#: 9SIA1D914D3899

MTX Dual 12" 1200W Sealed Enclosure and Mono Block Amplifier

  • MTX
  • Single Voice Coil 2 Ohm
  • 41 Hz - 150 Hz
  • Sealed Enclosure
  • 14" x 29.63" x 11.13"
  • 5/8" MDF Construction

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  • Specifications
  • Warranty & Returns
  • Reviews


Amplified Subwoofers


Subwoofer Size
Voice Coil


Peak Power
RMS Power
Frequency Response
41 Hz - 150 Hz
2 Ohm


Number of Woofer
14" x 29.63" x 11.13"
5/8" MDF Construction


RMS Power (Watts): 250 x 1 @ 2ohm
Max Power (Watts): 400
High Pass Filter: Variable, 40Hz - 400Hz
Low Pass Filter: Variable, 40Hz - 400Hz
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Do you own this product? Write a Review

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  • Michael R.
  • 7/15/2012 5:01:25 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat for a seald box

Pros: For a sealed box rated at 400 watts RMS these will put out some great bass. Nothing like what a similar ported box would give though.
They sound great, and hit hard for what they are.
The price was good (mine came with a 250 watt MTX amp) and shipping was fast.
Tight punchy bass from a sealed box.

Cons: Not ported.
Doesn't hit as low as a ported box.

Other Thoughts: Paid for on a Friday, got it Tuesday.
I didn't use the MTX amp, I already had a (certified) kicker 300.1 amp (tested at 315 RMS).
I used to own a setup that would hit 132.4 DB, these MTX subs sound great, and should be in the 120 DB range with a good amp.
Just to toss this out there, turn your sub/box so that the sub is facing REARWARD, you WILL be louder. (Tested by ear and in a competition). Get a bass cd and find what frequency range is the loudest for your car/amp/sub combo.

I would not expect to win any competition with these though.

1 out of 1 people found this review helpful. Did you? Yes No

  • Casey B.
  • 11/30/2011 2:30:53 PM
  • Ownership: more than 1 year

4 out of 5 eggsPretty good for the price.

Pros: This is a great beginner setup. I had this combo for about 8 months. The subs actually sound pretty great for how inexpensive they are.
I found the bass knob pretty handy when pulling up next to a cop at an intersection.

Cons: The amp is seriously underrated for the subs so if you have it around max volume it will heat up really fast. Living in Arizona, it would overheat occasionally unless i folded my backseat down and had the windows down to get air to flow over it.

Other Thoughts: If your are looking to add some bass to your setup but not go all out, this is the best combo to get started. If it came with an amp that put out more power, it would be perfect.

2 out of 2 people found this review helpful. Did you? Yes No

  • Mayson B.
  • 3/4/2011 10:36:29 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsMTX

Pros: I love everything about this MTX sub and amp combo. This is an amazing price for both of them. After hooking everything up this amazed me how clear and amazing this sounds. I am also using the Sound Quest SQK8 8 Gauge Amp Wiring Kit to put all of this together. This sub hits hard in the car enough to hurt your ears but not so loud that you can hear it a street away.

Cons: The remote bass controller seems to not do anything.

4 out of 4 people found this review helpful. Did you? Yes No

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MTX > 
Item#: 9SIA1D914D3899
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