Garage
Shop

See all parts that fit your 2022 Trax

MB Quart ONX304

12" Dual 4 ohm ONYX Series Car Subwoofer

MB Quart
Shop all MB Quart
Product videos
highlight-star-icon

12" ONYX Series 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 onx304

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

owc304 thumbnail

MB Quart OWC304

OUR PRICE: $39.99

View item

Loading...
Stage2 634 main

JBL Stage2 634 (STAGE2634)

500W Peak (80W RMS) 6.5" Stage2 Series 3 Way Coaxial 4-ohm Speakers

15
-26.00%

$73.99

List price $99.99

Product Highlights


12" ONYX Series 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 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
  • Illuminated dust cap
  • Black steel frame
  • 2-1/2" Voice coil
  • Frequency response: 25-150 Hz
  • Sensitivity: 85 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Product history:

MB Quart OWC304 thumbnail
(newest, current model)
MB Quart ONX304 thumbnail
(previous model, replaced by MB Quart OWC304)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MB Quart ONX304 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MB Quart ONX304 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 ONX304 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 MB Quart ONX304 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

123
-33.36%

$79.96

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
REF6532IXAM main

Infinity Reference REF6532IXAM

360W Peak (120W RMS) 6.5" Reference Series 2 Way Coaxial 3-ohm Speakers

3
-20.01%

$119.95

List price $149.95

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00


Best selling similar products

Marine Club 12 small

JBL CB122 Club Marine 12

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Polypropylene Cone
• Rubber Surround
• Impedance: Single 4 ohm
• Mount depth: 7-13/16"
• Sensitivity: 89 dB

(1)

$119.95

List price $379.95

VCW124v3 small

NVX VCW124 Version 3 (VCW124v3)

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)

(132)

$239.99

List price $287.99

SQW124 small

NVX SQW124

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB

$299.99

List price $359.99

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 ohm
Frequency Response
25 - 150 Hz
Sensitivity
85 dB
Xmax (millimeters)
9 mm
Subwoofer Design
Round / Circle
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
1.25 cubic feet
Maximum Sealed Box Volume
1.25 cubic feet
Minimum Ported Box Volume
1.5 cubic feet
Maximum Ported Box Volume
2.0 cubic feet
Top-Mount Depth (Mounting Depth)
5-3/4"
Cutout Diameter
11"
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:

ONX304

Weight:

9.65lbs

Internal SKU:

onx304

Internal Product ID:

33010

Product and How-to Videos


Customer Ratings & Reviews


MB Quart ONX304 thumbnail image

5 star
40%
4 star
0%
3 star
20%
2 star
20%
1 star
20%



Durability
2.8
Value
3.4
Features
3
Design
3.6
Usability
3.4

Customer Reviews

Sort by:

Loading...

Great for the buck.

I just got it and I put it in my box and took out my 12W6 JL older model and this sub sound's great nice bass I have it running by a mono amp MB Quart 1.400 formula so I give it a 5.

By Kevin on July 13, 2011

5 found this helpful


decent sub for its value

I went on a limb and bought this sub during the Black Friday special. It was for my GF and it was going to be her first subwoofer set-up. I thought this sub will do the job fine being an entry level marketing tag. I had this sub powered with the Kenwood KAC-8105D and the sub ended up failing after 3 months. It was more than likely the amp was rated +100wrms more than the sub itself. I can assure the sub was properly broken in using test tones and minor CD/USB play. The sound quality was there but its nothing close to a bass slammer (ie: Alpine Type-R, Kick Solobaric, etc). I would NOT recommend this sub if you listen to hip-hop. I think it would work well with rock, classics, oldies, alternative, etc. It is NOT a hard hitter. You've been advised.

By Tommy on May 27, 2012

4 found this helpful


Great Product.

I liked this sub alot so i went and bought another one so i will be running 2 ONX304 i can not wait to get it it is going to pound i recomend buying this sub for that price and can't beat it that is a steal in Canada that sub goes for a couple hundred.

By Kevin on July 16, 2011

3 found this helpful


Junk

Bought this to replace an MA Audio 12" Dual 4 ohm I had installed. I was hoping this would be better then that MA Audio, but it wasn't. This thing is very over rated for power. The bass is absolutely terrible no matter what kind of music I listen to. Thankfully I got it from here on a price match, that was the only positive I got from this product.

By Coolhand on May 14, 2012

2 found this helpful


Nice looking sub but...

The sub is very nice looking but it's power handling specifications are seriously over rated. I bought four and i am now returning all of them.

By kee lozz on August 31, 2011

2 found this helpful



Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2022 Chevrolet Trax

2001 Ford Focus

2003 Toyota Echo

1997 Audi A4

2011 Hyundai Accent

2019 BMW 7 Series

2004 Mazda 3

2022 Tesla Model 3

1976 Mercury Montego

1996 BMW 740iL

Vehicle
Store
Delete

2016 Harley Davidson FXDWG Dyna Wide Glide

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.