Massive Audio GTX124H 12" Subwoofer
Key features
- Subwoofer size: 12.0 inches
- RMS power per subwoofer: 800 W
- Voice-coil options: D4
- Voice-coil diameter: 2.5 inches
- Cone: Non-pressed paper
- Terminals: Five-way binding push terminals
Massive Audio GTX124H 12" Subwoofer is backordered and will ship as soon as it is back in stock.
Massive Audio GTX124H 12" Subwoofer is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Add powerful low-frequency output to your car audio system with the Massive Audio GTX124H 12" subwoofer. This dual-4-ohm driver handles 600–800W RMS and 1600W peak power, with enclosure options for ported or sealed builds.
Key Features & Benefits
- High power handling: The 600–800W RMS rating and 1600W peak rating suit demanding car audio systems.
- Dual 4-ohm voice coil: The 2.5" voice coil and 5-way binding push terminals provide wiring flexibility.
- Rugged construction: A heavy-gauge steel basket, 120 oz magnet, and woven round tinsel leads support the driver’s build.
- Excursion design: 15mm X-Max with a 10mm top plate is specified for dynamic bass response.
- Automotive materials: The UV-treated, non-pressed paper cone and EROM foam surround are designed for automotive use.
Technical Specifications
| Size | 12" |
| Watts RMS | 600-800 |
| Peak Power | 1600 |
| Cone | UV Treated / Non-Pressed Paper |
| Voice Coil | 2.5" Dual 4 Ohm |
| Surround | EROM Foam |
| Magnet | 120oz |
| Terminals | 5 Way Binding Push Terminals |
| Basket | Heavy Gauge Steel |
| Tinsel Leads | Woven Round |
| X-Max | 15mm with 10mm Top Plate |
| SPL | 88 dB |
| FS | 36Hz |
| Ported Box | 14"H x 16"D x 16"W / 14.05 sq. in. Port Area |
| Sealed Box | 1.62 ft3 |
Why Choose This Product?
The GTX124H gives you a choice between a specified ported enclosure and a sealed box. The ported design is listed as an option for deeper bass, while the sealed volume offers a tighter, more controlled response.
Its 88 dB SPL rating and 36Hz Fs provide useful reference points when planning a system around this 12" driver. The dual 4-ohm voice coil also gives you wiring options to consider alongside your amplifier and system design.
Installation & Compatibility Notes
The listed ported enclosure measures 14"H x 16"D x 16"W and has 14.05 sq. in. of port area. The sealed enclosure volume is 1.62 ft3. Check available space and enclosure requirements before choosing a design.
Match the subwoofer’s dual 4-ohm voice coil and 600–800W RMS rating to your amplifier and intended wiring. Confirm the final system load and power compatibility before installation.
Frequently Asked Questions
What size is the Massive Audio GTX124H?
It is a 12" subwoofer.
What amplifier power does this subwoofer handle?
Its listed power handling is 600–800W RMS, with 1600W peak power. Match your system to the RMS rating and confirm amplifier compatibility.
What does dual 4-ohm voice coil mean for wiring?
The driver has two 4-ohm voice coils. The final system load depends on the wiring configuration, so confirm that load against your amplifier requirements.
What enclosure options are listed?
The specifications list a ported box measuring 14"H x 16"D x 16"W with 14.05 sq. in. of port area, or a sealed box with a volume of 1.62 ft3.
Explore More
Shop the Massive Audio GTX124H at 12 Volt Outlet. Want to learn more about Massive Audio? Explore our Massive Audio brand profile.
Recommended Monoblock Amplifiers
Power-matched options for one subwoofer or one complete loaded enclosure. We aim to include same-brand choices when their ratings qualify.
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Suggestions use 75–125% of the subwoofer’s RMS rating at the wiring load shown. Check wiring, enclosure needs, electrical capacity and installation space. Set gain and filters correctly to avoid overpowering the subwoofer. Buying more than one subwoofer changes the match.
