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MTX Audio JackHammer JH4512-04

500W Max, 12" Single 4 ohm Jack Hammer JH45 Series Subwoofer

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12" JackHammer 45 Round Series Subwoofer • 500W Max • 250W RMS • Single 4 Ohm • Polypropylene Woofer Cone • Stitched Rubber Surround • Asymmetrical Linear Drive System • Spider Plateau Venting • 70oz. Magnet

Learn more about the jh451204

We apologize

This item has been discontinued

Product Highlights


12" JackHammer 45 Round Series Subwoofer • 500W Max • 250W RMS • Single 4 Ohm • Polypropylene Woofer Cone • Stitched Rubber Surround • Asymmetrical Linear Drive System • Spider Plateau Venting • 70oz. Magnet

Description


MTX brand icon

Authorized dealer

Authorized MTX Dealer
When you put the name JackHammer on any subwoofer, you've got a reputation to protect. Designed and engineered in the U.S.A., JackHammer subwoofers are made of high quality materials and are packed with features that put other subwoofers to shame.

The JackHammer series are loaded with features that make them rock. Both models feature rubber surrounds that are stitched directly to the cone for durability and have voice coils that are wound with "High Temperature" wire to ensure that your JackHammer subs will keep pounding the streets as long as you want them to. Both levels also feature MTX's proprietary Spider Plateau Venting technology which helps push hot air out of the voice coil and bring cool air in, adding to the reliability of the subwoofer and keeping it cool even in the hottest cars. JackHammer series subwoofers also feature the Asymmetrical Linear Drive System that is featured on other MTX subwoofers which combines a flat progressive spider with an extended pole piece to reproduce smooth, linear motion for incredibly crisp, clean sound.

The JH45 subwoofers have a silver stamped basked, rubber magnet cover and a industrial-looking "riveted" dust cap design.

  • 12" JackHammer 45 Round Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Impedance: Single 4 Ohm
  • Polypropylene woofer cone
  • Rubber surround
  • Stitched Cone for added durability and style
  • Precision Stamped Basket for greater structural integrity
  • FEA optimized roll geometry to maximize excursion without sacrificing cone surface area
  • ALDS Asymmetrical Linear Drive System with a flat progressive spider and extended pole piece for smooth, linear, piston like drive
  • Industry leading thermal power handling using "High Temperature" Voice Coil Wire
  • Industry leading Spider Plateau Venting cooling system cools at the voice coil
  • 1-3/4" Single voice coil
  • 70oz. Magnet structure
  • Frequency response: 31-150 Hz
  • Sensitivity: 86.7 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
For more info, read about the JH4512-04 in our blog.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MTX Audio JackHammer JH4512-04 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MTX Audio JackHammer JH4512-04 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MTX Audio JackHammer JH4512-04 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 MTX Audio JackHammer JH4512-04 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Subwoofer Size
12"
Peak Power Handling
500 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohms
Frequency Response
31 - 150 Hz
Sensitivity
86.7 dB
Subwoofer Design
Round / Circle
Main Cone Color
Silver
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.25 cubic feet
Maximum Sealed Box Volume
1.25 cubic feet
Minimum Ported Box Volume
2.0 cubic feet
Maximum Ported Box Volume
2.0 cubic feet
Top-Mount Depth (Mounting Depth)
6-15/16"
Cutout Diameter
11-1/16"
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

JH4512-04

Weight:

10.00lbs

Internal SKU:

jh451204

Internal Product ID:

14787

Product and How-to Videos


Customer Ratings & Reviews



5 star
62%
4 star
38%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
4.8
Features
4.3
Design
4.7
Usability
4.9

Customer Reviews

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EHhhh

It is a great sub, but my amp didnt like it. Thats probably my fault though. I would recommend buying it but only if your amp won't over power it.

By Smut on December 12, 2010

6

found this helpful.

Amazing

I would strongly recommend these i have 2 in 2 sealed truck boxes in my 89 ranger with a 220w amp and it bounds the hell out of it

By FoxTrot on May 1, 2009

6

found this helpful.

Great

Its a great sub. it sounds awesome and its the best one for the price. i think. mine is really clear up to like 150 to 200 ft away and put on a 300 rms amp.

By evan on December 15, 2008

6

found this helpful.

great bass for a low price

I have 2 JH4512-04's in a custom box I built behind the back seat of my 04 Chevy Silverado 1500 4 dr truck. I powered them with a MTX RoadThunder 4160 amp that is 15 yrs old. These are the best sounding speakers and have the best bass out of all the different kinds I've owned over the years. I highly recommend these subs.

By NATAS on November 25, 2010

5

found this helpful.

nice

I have two of these. only giving them 500watts and they slam the SUV so hard. Doesn't take a lot of power for them to slam.

By thisguy on June 1, 2010

5

found this helpful.

Pure Quality

I use to mess around, buying the cheap a** products, but then I sacked up and bought this MTX sub and it really paid off. Great product, good warranty and hasn't failed me yet. I plan on buying one more soon. Hits good with 200 watt Rockford Fosgate. Plan on getting a 500 watt Rockford Fosgate amp from Sonic too..

bottom line.. GREAT DEAL and clean look

By Spencer on May 17, 2010

5

found this helpful.

great product

i have two of these and they sound great and hit hard powered by the right amp i would get this again

By nicholas on March 9, 2010

5

found this helpful.

Very Nice

I like these subs. My friend had two of these in a sealed box hooked up to about 500 watts and they pounded. Definitely hurts the ears when the windows are down lol. You can really feel these in your chest too. They were pretty clean and just flat out hit hard. I recommend these subs for sure. Come on, Its MTX!

By Luke on January 6, 2010

5

found this helpful.

pretty good subs

i've had these subs for a little less than 2 years now and they are still bangin! great quality, very durable and hits clear with the correct powering. for the price its great. i have two in a sealed box, low lows are a little weak but they compensate with a good punch. recommendable

By Will on October 1, 2009

5

found this helpful.

good buy

I bought a MTX enclosure with 2 of these in it, it was a undivided ported box (mono), I put them in a divided/sealed box (about 1.3-1.6 cu ft.) and they're a lot better that way, I've owned them for over a year and no problems so far.
They sound good with rap/rock

By Brandon on January 9, 2009

5

found this helpful.

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