Why Shop Sonic Free Shipping Free Tech Support Easy Returns Low Price Guarantee Details

MTX Audio SledgeHammer SLH12X2U (Unloaded)

12" Bass Slammer Dual Unloaded Subwoofer Enclousure (Sledge Hammer Edition)

No customer reviews yet. Be the first!

The product on this page is discontinued.

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
Authorized MTX Dealer
  • 12" Bass Slammer Dual Unloaded Subwoofer Enclousure
  • Sledge Hammer Edition
  • 3/4" MDF Construction
  • Front slot ports
  • Recessed sides
  • High gloss black vinyl baffle
  • Compatibility: 12" MTX 8500 and 9500 subwoofers
  • Terminals: two push pin nickel plated 5 way terminals
  • Chamber Volume: 1.75 Cubic feet per chamber
  • Total Box Volume : 3.50 Cubic feet total
  • Dimensions (HxWxBDxTD): 16"H x 36"W x 19-5/8"BD x 17-1/8"TD
  • 1-year Manufacturer's warranty
Speaker Box / Enclosure Specifications
Subwoofer Size12"
Subwoofer Cutout ShapeRound / Circle
Box TypeVented / Ported
Number of Subs/Speakers2
Box Style/ShapeSquare/Rectangle
Cutout Diameter or LengthN/A
Maximum Speaker DepthN/A
Total Box Volume3.50 cubic feet
Height16"
Width36"
Depth19-5/8"
Second Depth17-1/8"
Wood Thickness3/4"
Number of Terminals2
Terminal TypeSpring posts
Box Exterior ColorBlack
Box FinishVinyl
Port Details
Number of Ports2
Port DiameterN/A
Port LengthN/A
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Nobody has rated this product yet.
Share your thoughts with others:
Amplifier Kits
Complete your system with all the wires you need to properly install and power your amplifier.
 ProductPriceAdd?
0/1 Gauge - JL Audio Dual Amp Kit0/1 Gauge - JL Audio Dual Amp Kit
Complete premium power station amplifier installation kit designed for systems up to 2500 watts.
$236.99
4 Gauge  - StreetWires Amp Kit4 Gauge - StreetWires Amp Kit
4 Gauge (AWG) ZN1 Series Single Amplifier Installation Kit
$37.99
Speaker Wire
This is recommended speaker wire you can choose from that would be best for your subwoofer or speaker set-up. The higher quality of speaker wire used, the better sound you will get from your system.
 ProductPriceAdd?
High-Performance Streetwires Speaker WireHigh-Performance Streetwires Speaker Wire
25 ft. of 12 Gauge speaker cable with twisted pair construction for improved power flow and fine-stranded copper windings.
$29.99
Monster 202 LN Series Speaker CableMonster 202 LN Series Speaker Cable
50 ft. of 2-Conductor high-performance speaker wire with a copper conductor surface for maximum power transfer.
$29.00
Sound Dampening Material
Get the most of your new sound system with high quality sound dampening material. Helps eliminate road noise while keeping your music in the car.
 ProductPriceAdd?
36 ft. of Dynamat Extreme Bulk Pack36 ft. of Dynamat Extreme Bulk Pack
Make your sound system sound perfect by reducing road noise with 9 sheets of sound dampening material.
$149.99
20 ft. of Dynamat Xtreme Trunk Kit20 ft. of Dynamat Xtreme Trunk Kit
Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.
$94.99
Dynamat Dynaxorb for SpeakersDynamat Dynaxorb for Speakers
Waterproof sound dampening material designed specifically to prevent distortion by the back wave of a speaker interfering with the front wave.
$19.99
Enclosure Accessories
Everything you need to install your subwoofer. From quick disconnects to polyfil, whatever you need will be here.
 ProductPriceAdd?
Banana Clip TerminalsBanana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
Insulated Female Quick Disconnect ConnectorsInsulated Female Quick Disconnect Connectors
100 pack of 12-10 Gauge yellow insulated quick disconnects.
$6.99
Binding Post Terminal CupBinding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$2.99
20 oz. Bag of Poly-Fil20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles or can be used for your polyfil.
$5.99
Related products
MTX Audio T9512-44
12" Dual 4 Ohm Thunder 9500 Subwoofer • 2000W Max • 1000W RMS • Aluminum Vapor Deposition Over Carbon/Poly cone woofer • NBR Rubber surround • 4" Voice coil • 260oz. Magnet structure

Product Summary

Manufacturer: MTX
Model number: SLH12X2U
UPC: 715442570485
Weight: 110.00 lbs
Internal SKU: slh12x2u
Internal product ID: 15654
February caption contest - win a Powerbag!

Customer Testimonial

Sonic Electronix is always my first and only choice for Electronics and now they're selling more things every da, it's a great place to shop! I pick up locally or my order is delivered the next day. Sonic is the best.

- Danny from Fillmore ca

See more…

Recently Viewed Items

slh12x2u thumbnail

Open Box, 2-way Color OLED LCD Pager Security System Car Alarm with Remote Start System

slh12x2u thumbnail

Prepaid Home Video InstallCard for 30" or Smaller Flat Panel Wall Mount

slh12x2u thumbnail

Onstar, Bose, and Chime Interface for 2006-up GM LAN Vehicles (Nucleus NCGM40B)