MB Quart MBQJ-STG6A-1 Tuned Six Speakers System Upgrade for OEM Source Unit – 2018-up Jeep Wrangler (JL) and 2020-up Gladiator (JT)

Brand: MB Quart
Model Number: MBQJ-STG6A-1
UPC: 806576232179
Model Number: MBQJ-STG6A-1
UPC: 806576232179
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MB Quart MBQJ-STG6A-1 Tuned Six Speakers System Upgrade for OEM Source Unit – 2018-up Wrangler (JL) and 2020-up Gladiator (JT)

  • Designed for 2018-up Wrangler (JL) and 2020-up Gladiator (JT)
  • Included OEM integration module only compatible with Jeep radio
  • All components designed for off-road use
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Product Description

Features & Specifications



MB Quart MBQJ-STG6A-1 Tuned Six Speakers System Upgrade for OEM Source Unit – 2018-up Wrangler (JL) and 2020-up Gladiator (JT)

MB Quart Jeep Wrangler (JL) / Gladiator (JT) Tuned Audio Package: Six Speaker 800 Watt STAGE 6 OEM Audio System Upgrade (Uses OEM Source Unit). MB Quart 800 watt six speaker STAGE 6 audio system with two 3.5″ coaxial speaker, two 6.5″ midbass drivers, two 6×9″ coaxial speakers powered by two 400 watt class-d amplifiers – uses OEM source unit.

System includes:

  • six weather-resistant speakers (JC1-108, JW1-116E, JC1-169SB)
  • two NA2-400.2RC 2-channel marine amps
  • front speaker enclosures
  • AAMPRO interface for connecting to Jeep radio (PAC AP4-CH41)
  • amp mounting plate, installation parts and wiring (MBQJ-ACC-1)

All-in-one awesomeness

Upgrading the stereo in your Jeep Wrangler or Gladiator doesn’t have to involve replacing the factory radio. This all-in-one speaker upgrade kit from MB Quart lets you boost your sound while keeping the stock radio. The package includes speakers, two amplifiers, and a vehicle-specific interface that’s designed to work with the Jeep radio. Installation involves basic hand tools.

Big-time sound and a factory look

This 6-speaker, 400-watt system includes two 3-1/2” full-range dash speakers, two 6-1/2″ mid-bass drivers in enclosures for the knee panels (lower dash), and two 6”x9″ full-range rear speakers. These all-weather speakers get the power they need from two 200-watt Class D marine-rated amplifiers, and they’ll sound great in your Jeep.

Built to last

The entire system is designed to blend right into your Jeep’s interior. In addition to the Jeep-specific front speaker enclosures, the package includes a powder-coated mounting plate for the amps. And all of the gear is designed to meet MB Quart’s exacting standards for durability and water-resistance.

Compatible Vehicle Fitment

Jeep Wrangler (JL) 2018-Current with OEM radio, Jeep Gladiator (JT) 2020-Current with OEM radio

Source Unit Features

Uses OEM source unit.

Speaker Features

Tweeter: 0.75″ titanium dome (dash speaker) and 1″ magnesium (rear speaker) dome, Crossover: 12db midrange / 6db tweeter, Frequency Response: 75Hz to 23kHz, Sensitivity: 89db, 520W Maxx / 260W RMS.

Amplifier Features

400 watt high efficiency Class-D compact NA2 amplifiers with on-board equalization.

Mount / Harness

Vehicle Specific Wiring and Harness. Simple “no mistakes” plug and play OEM style installation. AAMPRO plug and play interface allows use with the OEM Source Unit.

Time and Tools

Basic hand tools.

MB Quart front speakers

  • two 3-1/2″ coaxial speakers with 3/4″ magnesium dome tweeters
  • two 6-1/2″ mid-bass drivers in composite enclosures
  • enclosures are direct replacements for factory speaker enclosures
  • rubber speaker surrounds

MB Quart rear speakers

  • two 6″ x 9″ coaxial speakers with 1″ magnesium dome tweeters
  • rubber surrounds

MB Quart NA2-400.2RC 2-channel amp

  • Class D design
  • 200 watts RMS x 2 at 2 ohms (400 watts peak)
  • frequency response: 20-20,000 Hz
  • low-pass crossover and bass boost
  • conformal-coated circuit board

Brand MB Quart   Model MB Quart MBQJ-STG6A-1
Product: MB Quart MBQJ-STG6A-1 Tuned Six Speakers System Upgrade for OEM Source Unit – 2018-up Jeep Wrangler (JL) and 2020-up Gladiator (JT)

Speaker Size: Vehicle-specific
Tweeter Design: Dome
Impedance: 4 Ohms
Tweeter Composition: Magnesium/titanium
Woofer Composition: Paper/mica blend
Woofer Surround: Rubber
Frequency Response: 75 – 23k Hz
Minimum RMS Wattage: 65
Maximum RMS Wattage: 130
Compatible Vehicles: Jeep Gladiator (JT) 2020-Current with OEM radio, Jeep Wrangler (JL) 2018-Current with OEM radio
Vehicle Kit Total System Power: 800 Watts
Weight: 25.02 lbs
Dimensions: 47.83 × 9.84 × 8.26 in

What's in the box

MB Quart MBQJ-STG6A-1 owner's manual
This MB Quart system contains 7 individually boxed items:

JC1-108 Upper Dash Speakers:
Two 3.5" 2-way speakers
Two 5" speaker harnesses

JW1-116E Lower Dash Speakers:
Two 6.5" mid-bass drivers pre-installed in custom enclosures (attached 7" wire harness terminated in a Molex plug and a 27" wire harness terminated in slip-on terminals)

JC1-169SB Rear Speakers:
Two 6×9" 2-way speakers
2 Mounting plates
2 Grilles
Two 10" speaker harnesses
Eight 12mm machine screws
Sixteen 14mm screws

NA2-400.2RC Amplifier (x2):
2-Channel amplifier w/ attached 8" power/ground and speaker output harnesses (terminated with Molex plugs)
16" Power/ground harness (inline 30A ATC fuse)
16" Speaker output harness
Four 18mm screws
Quickstart guide

PAC AP4-CH41 Interface:
Amplifier integration interface module
18" T-harness
8" Speaker connection harness
6' Rotary-knob cable
Installation Instructions

MBQJ-ACC-1 Accessory Kit:
Dual amp mounting plate
8' 6-Channel RCA cable
Power & ground distribution harness w/ 7.5' power wire and 34" ground wire (power wire terminated with a crimp-connector on one end and ground wire terminated in a ring-terminal / both terminating into three 2-pin Molex plugs on other end)
13" Section of power wire w/ inline fuse holder and installed 70A Maxi fuse (ring terminal on one end / bare-ended wire on other end)
8.5' Rear speaker harness
10' Front speaker harness
7' Subwoofer harness (not used)
8' Remote turn-on wire
Ten 8" wire-ties
Twelve 1/4" machine screws
12 Flat washers

Speaker Design



4 Ω

RMS Power

401 to 800 Watts

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MB Quart Canada 1 Year Limited Warranty


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