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MB Quart ONX304SQ

12" Dual 4 ohm Square ONYX Series Car Subwoofer

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12" ONYX Series Square Subwoofer • Dual 4 ohm • 800W Max • 400W RMS • Gloss Black Polypropylene Cone • NBR Surround • Spider Woven Tinsel Leads • Illuminated Dust Cap

Learn more about the onx304sq

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This item has been discontinued

Product Highlights


12" ONYX Series Square Subwoofer • Dual 4 ohm • 800W Max • 400W RMS • Gloss Black Polypropylene Cone • NBR Surround • Spider Woven Tinsel Leads • Illuminated Dust Cap

Description


MB Quart brand icon

Authorized dealer

The Key to a Complete Onyx Audio System

New for 2011, the ONYX series of subwoofers are now available! These subwoofers are the perfect compliment to a set of MB Quart ONYX speakers and now allow for the installation of a complete ONYX audio system. With a variety of different configurations and sizes, you will be able to find the subwoofer that is right for you. Each feature a high gloss piano black finish and an optional illuminated dust cap. The MB Quart logo on the cone can be illuminated once the optional power/ground wires are connected near the speaker terminals. The finish of the woofers was designed to match that of the speakers and the amplifiers within the ONYX line. Get more bang for your buck with the MB Quart ONYX subwoofers.

  • 12" Dual 4 ohm ONYX Series Square Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Impedance: 4 ohm
  • Gloss black polypropylene cone
  • NBR surround
  • Red NOMEX spider woven tinsel leads
  • Spade terminals
  • Square cone design for greater bass output
  • Illuminated dust cap
  • Black steel frame
  • 2-1/2" Voice coil
  • Frequency response: 30-150 Hz
  • Sensitivity: 86 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MB Quart ONX304SQ Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MB Quart ONX304SQ Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MB Quart ONX304SQ Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 MB Quart ONX304SQ Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
ONYX Series
Subwoofer Size
12"
Peak Power Handling
800 watts
RMS Power Handling
400 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Frequency Response
30 - 150 Hz
Sensitivity
86 dB
Xmax (millimeters)
9 mm
Subwoofer Design
Square
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Nitrile Butadiene Rubber NBR
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.5 cubic feet
Maximum Sealed Box Volume
1.5 cubic feet
Minimum Ported Box Volume
1.75 cubic feet
Maximum Ported Box Volume
2.25 cubic feet
Top-Mount Depth (Mounting Depth)
5-15/16"
Cutout Diameter
11-1/8"
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

ONX304SQ

Weight:

10.00lbs

Internal SKU:

onx304sq

Internal Product ID:

33012

Product and How-to Videos


Customer Ratings & Reviews



5 star
50%
4 star
0%
3 star
0%
2 star
25%
1 star
25%



Durability
3
Value
4.3
Features
3.3
Design
4.5
Usability
3.3

Customer Reviews

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on of the best square sub, up there with kicker

These speakers sound great if you have it weighed right. If you wire it to 2 ohms they can blow easy, if you wire it to 4 ohms your good to go. I had these for 3 years and still running strong. They sound better that MTX jackhammers. If you get these speakers you have to know what you are doing and take care of them and they wont let you down. You wont be able to hear yourself think.

By Green Raven on March 6, 2012

7

found this helpful.

Amazing sub!

Okay, listen the two who gave this sub a bad review are RETARDS, I have two of these as well as it's baby brother the 10, which I own two of as well and they hit so hard my entire ford ranger rattles. Good price for SQUARE 12's. I have ran them wide open for about 3 months now and never broke them in with all that test tone crap, I don't care for it, but any how these things hit so hard when listening to a heavy bass song it feels like a massage. My jeans literally vibrate and blow around because of how bad the air vibrates in the cab, DO NOT WIRE TO 2 OHM!!!! If you buy these you have to know to hook to 4 ohm if not they will blow in no time, they only make a 4 ohm model for this amp so READ the specs before you wire it up!!

By Kyle on September 27, 2012

6

found this helpful.

Horrible sub

DO not buy these subs. I looked at them and thought 12" square subs for cheap.... "not bad!". BOTH blew off my older alpine f707 within 20 mins. Super crappy sub.

By Hoyta on February 17, 2012

4

found this helpful.

Mb Quart square subwoofer

Hello, i had gotten this sub just to hold me over until i got a better setup. i looked into mb quart and they seemed like a nice brand. i hooked this up to my Alpine mrp-350. it puts out 350 watts rms at 2 ohms.. slightly lower then the subwoofer. So i wired the subwoofer to 2 ohms and hooked it up and having my gain at half and bass boost at three quarters. it blew within 10 minutes. i am sure this subwoofer is overrated however it did sound nice and hit hard when it was playing. Made from solid materials. just overrated.

By Jake on September 5, 2011

5

found this helpful.

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