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JBL GT5-12 - Open Box, Good Condition (Used)

275W 12" GT Series Single 4 ohm Subwoofer Open Box Complete (Good, Used)

JBL
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• 1100W Peak
• 275W RMS
• Polypropylene cone woofer
• Rubber surround
• Rubber coated tinsel leads
• Vented motor structure
• Single 4 ohm voice coil
• Dual-stacked, oversized magnets

Learn more about the ls-gt512-obc5

We apologize

This item has been discontinued

Description


JBL brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

Big Bass

For anyone who likes to crank it up in the car, the new JBL 12" high-output GT5-12 subwoofer is the real deal. The JBL GT5-12 subwoofer features a single 4-ohm voice coil and a vented motor structure, and offers 1100 watts of peak power handling. The GT5-12 also features JBL’s newest design, combining classic elements with modern ones.

All-New Design

The GT5-12 follows the design of the more-expensive JBL subwoofers, combining classic elements with modern ones.


Significant Power Handling Capabilities

The GT5-12 handles 275W/1100W (RMS/Peak) power and offers nearly 20 percent higher Xmax than many competitors.


Increased Reliability

With its fully vented motor structure and rubber-coated tinsel leads, the GT5-12 is able to withstand even the most intense bass assault.


Dual-Stacked, Oversized Magnets

Unlike competing entry-level subwoofers, the GT5-12 is based on a solid motor structure featuring two large magnets covered by the classic JBL rubber ring.




The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.


Item Condition - Open Box, Good Condition:
A Good Open Box used product shows wear from consistent use, but it remains in good condition and works perfectly. It may be marked, have identifying markings on it, or show other signs of previous use or installation. Original packaging, paperwork or protective wrapping may be missing or not included in its entirety. Warranty details are included in the item description or comments.

General Features:

  • 12" GT Series Subwoofer
  • Power Handling:
    • Peak: 1100 watts
    • RMS: 275 watts
  • Recommended power range: 100 - 275 watts RMS
  • Impedance: Single 4 ohm
  • Polypropylene cone woofer
  • Rubber surround
  • Rubber coated tinsel leads
  • Vented motor structure
  • Single 4 ohm voice coil
  • Dual-stacked, oversized magnets
  • Frequency response: 27-450 Hz
  • Sensitivity: 90 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Tips for Installing the your subwoofer


Subwoofer Wiring Guide


Wiring Guide to Wire 1 JBL GT5-12 - Open Box, Good Condition (Used) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 JBL GT5-12 - Open Box, Good Condition (Used) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 JBL GT5-12 - Open Box, Good Condition (Used) Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 JBL GT5-12 - Open Box, Good Condition (Used) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
GT5 Series
Subwoofer Size
12"
Peak Power Handling
1100 watts
RMS Power Handling
275 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
2"
Frequency Response
27 - 450 Hz
Sensitivity
90 dB
Xmax (millimeters)
14.2 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Silver
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Magnet Structure
Double Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
1.0 cubic feet
Optimum Ported Box Volume
1.75 cubic feet
Top-Mount Depth (Mounting Depth)
6-7/16"
Cutout Diameter
11-1/4"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
29 Hz
Equivalent Compliance (Vas)
54.2 liters
Total Speaker Q Value (Qts)
0.58
Electrical Q Value (Qes)
0.64
Electrical Resistance of Voice Coil (Re)
4.00 ohm
Mechanical Q Value (Qms)
6.39
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

GT5-12-2

Weight:

16.00lbs

Internal SKU:

ls-gt512-obc5

Internal Product ID:

136905

Customer Ratings & Reviews


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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
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  • 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.