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Molded JMC Subwoofer Enclosure (12MJSG)

Single 12" Custom Designed Ported Enclosure

4.8

(5 reviews)

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The product on this page is discontinued.
  • Front-air ported single subwoofer enclosure
  • Professional patented design box
  • Front air ported speaker box (vent and cubic feet not required)
  • Fits most cars and SUVs
  • Speaker boxes are designed to enhance the deep bass response of woofer or subwoofer enclosures
  • Enclosures are specifically designed and front air ported to provide the best bass response possible
  • 3/4" MDF Construction
  • Durable Black Carpeting
  • Plexiglass front air ported window
  • Cutout diameter: 11-1/4"
  • Mounting depth: 6-1/4"
  • Dimensions: 15"L x 15"W x 14" D (Top) x 16-1/2" D (Bottom)
Port Specifications:
  • Round port
  • Number of ports: 1
  • Port volume: .02 cubic feet (per port)
  • Total port volume: .02 cubic feet
  • Port dimensions: 4-3/4"Diameter 6-1/4"Depth
Speaker Box / Enclosure Specifications
Subwoofer Size12"
Subwoofer Cutout ShapeRound / Circle
Box TypePorted Bandpass
Number of Subs/Speakers1
Box Style/ShapeSquare/Rectangle
Cutout Diameter or Length11-1/8"
Maximum Speaker Depth6-1/4"
Total Box Volume0.41 cubic feet
Box Volume (Each Chamber)0.41 cubic feet
Height15"
Width15"
Depth14"
Second Depth16-1/2"
Wood Thickness3/4"
Number of Terminals1
Terminal TypeBinding posts
Box Exterior ColorBlack
Box FinishCarpet
Port Details
Number of Ports1
Port Diameter4-3/4"
Port Length6-1/4"
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for Molded JMC Subwoofer Enclosure (12MJSG)
Average Customer Rating is 4.8 out of 5 stars:
4.8
based on 5 Reviews
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Rating Distribution:
5 star:
.
.
80%
4 star:
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20%
3 star:
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0%
2 star:
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0%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.8
Value
4.8
Features
4.4
Design
4.8
Usability
5.0
what's this?
Most Helpful Customer Reviews:
June 15, 2011 Excellent!!!
1 of 1 people found the following review helpful:
Review by
Abraham from Santa Clarita, CA
Overall
Durability
Value
Features
Design
Usability
First time buyer and this enclosure was my first purchase here on Sonic. I threw a 12 inch Alpine Type R in. All I have to say is wow. Before I got this box I had the sub in a sealed box from B*** B** and I had to replace it twice because it kept going out on me. Finally decided to change boxes from sealed to ported. Honestly, for what this box can do for the sound at the price, this is definately a steal. Very well made design. Excellent customer service as well. Next time I need to upgrade some speakers, I am most definitely coming back to Sonic. Thanks!
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November 15, 2011 Badass
Review by
Martimus from Cleveland, OH
Overall
Durability
Value
Features
Design
Usability
I would recommend this product because the bass in my car hits harder then it ever has before. Price is great and got box the same week i ordered it. Sonic Electronix has done it again!! Excellent product!
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June 28, 2011 Single 12" sub enclosure
Review by
Mikey80 from Martinez, Ca
Overall
Durability
Value
Features
Design
Usability
This box is amazing! I ran 3 of these enclosures in the back of a 2007 Trailblazer and holy crap did it hit!! and HARD!!! The design of this box is out of the ordinary, I was so happy I convinced my brother to run 1 in the rear of his 2007 Honda Si.

Extremely happy with the purchase, transaction and extremely fast ship time.
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February 9, 2010 Just one
Review by
Audi B5 from MN
Overall
Durability
Value
Features
Design
Usability
Does an amazing job of playing deep bass especially if you listen to a lot of hip-hop music but sounds good also with rock music. Got a Kicker CVR mounted on. If you heard of Ludacris recent song- How Low, play that song with this box and it won't disappoint you at all.
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February 28, 2006 My JMC box
Review by
Fernando from Antioch, CA
Overall
Durability
Value
Features
Design
Usability
I have owned this box for approximately 3 months. I have enjoyed it immensely. It provided my civic with fantastic sound quality with a cool design. It is a little pricey but it is definetely worth every penny. I urge all those who want a custom looking box with professional sound to give this box a try.
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Amplifier Kits
Complete your system with all the wires you need to properly install and power your amplifier.
 ProductPriceAdd?
0/1 Gauge - Kicker Dual Amp Kit0/1 Gauge - Kicker Dual Amp Kit
Dual amplifier installation kit with distribution blocks designed for systems up to 3000 watts.		$209.99
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?
Kicker Speaker WireKicker Speaker Wire
20 ft of 12 Gauge XW-series speaker wire with twisted pair technology for noise cancellation and bass response.		$24.49
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
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.
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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.		$159.99
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
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.		$7.99
Spring Post Terminal CupSpring Post Terminal Cup
Makes adding a spring post terminal to an enclosure simple! Banana clip ready!		$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

Product Summary

Manufacturer: Custom Enclosures
Model number: 12MJSG
Weight: 27.00 lbs
Internal SKU: 12mjsg
Internal product ID: 5106

Why Sonic Electronix?

Musical Mayhem Sweepstakes sponsored by MTX Audio. 3 winners, $2,300 in prizes!

Customer Testimonial

First time I have used the service. The website itself is excellent - very informative and easy to use.
Support for many international payment and shipping options. Great communications, very competitively prices. I hope on the speedy delivery of my order to Russia (per USPS).

- Vlad from Russia

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