Massive Audio H124XR - 12" 3000 Watts RMS Dual 4 Ohm 4" V.C. Mega 70 Lbs. Subwoofer
Key features
- Subwoofer size: 12.0 inches
- RMS power per subwoofer: 3000 W
- Voice-coil options: D4
- Voice-coil diameter: 4 inches
- Cone: Non-Pressed Paper
- Basket: Cast Aluminum
Massive Audio H124XR - 12" 3000 Watts RMS Dual 4 Ohm 4" V.C. Mega 70 Lbs. Subwoofer is backordered and will ship as soon as it is back in stock.
Massive Audio H124XR - 12" 3000 Watts RMS Dual 4 Ohm 4" V.C. Mega 70 Lbs. Subwoofer is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The Massive Audio H124XR 12-inch subwoofer is built for high-output car audio systems that need substantial power handling and controlled bass. Its 4-inch dual 4-ohm voice coil, 3000W RMS rating, and 21.6 mm X-Max support demanding competition builds and premium daily-drive systems.
At roughly 70 lbs, it combines a cast aluminum basket with a Kevlar fiber reinforced non-pressed paper cone. Pair it with a capable high-current amplifier and a suitable sealed or ported enclosure.
Key Features & Benefits
- 3000W RMS power handling: Supports sustained high-output bass when matched with a capable amplifier.
- 4-inch dual 4-ohm voice coil: Offers wiring options for matching the subwoofer to your amplifier and target impedance.
- 21.6 mm X-Max: Allows substantial linear excursion for deep, dynamic bass.
- Vented back plate and basket: Help manage heat during extended high-output listening.
- Heavy-duty construction: Triple tinsel leads, direct input wires, and a cast aluminum basket are designed for demanding use.
Technical Specifications
| Specification | Value |
|---|---|
| Size | 12" |
| Peak Watts | 6000 |
| RMS Watts | 3000 |
| Cone | Non-Pressed Paper; Kevlar fiber reinforced; Kevlar spunlace |
| Voice Coil | 4" Dual 4 Ohm |
| Voice Coil Former | Anodized aluminum |
| Surround | Tall and Narrow Foam; high-roll surround |
| Magnet | 377oz Strontium |
| Terminals | Heavy Duty Direct Input Wires Connection; pre-installed heavy-gauge direct leads |
| Basket | Cast Aluminum; red stitching |
| Tinsel Leads | Heavy Duty Triple |
| Spiders | Dual Nomex |
| Dust Cap | Fiberglass woven |
| X-Max | 21.6mm |
| SPL | 93.54dB |
| Ported Box | See User Guide PDF |
| Sealed Box | See User Guide PDF |
| Fs | 43Hz |
| Re | See User Guide PDF |
| Le | See User Guide PDF |
| BL | See User Guide PDF |
| Qms | 3.119 |
| Qes | See User Guide PDF |
| Qts | See User Guide PDF |
| Vas | 16.841 L |
| Cms | 42.1 um/N |
| Mms | 324.295 g |
| Sd | 0.053 sq cm |
| Vd | 1.146 L |
| Weight | Roughly 70 lbs |
Why Choose This Product?
The H124XR pairs a high RMS power rating with a 377 oz strontium magnet and a reinforced cone. Its tall, narrow foam surround and dual Nomex spiders support excursion while helping maintain controlled movement.
A vented back plate and basket help manage heat, while the heavy-duty triple leads are intended for reliability at high excursion. The fiberglass woven dust cap and red-stitched cast aluminum basket add distinctive construction details to this heavy-duty subwoofer.
Installation & Compatibility Notes
Plan your amplifier and wiring around the subwoofer’s 3000W RMS rating and 4-inch dual 4-ohm voice coil. Confirm the amplifier’s output and the final system impedance suit your chosen wiring configuration.
The source lists both sealed and ported enclosure options and refers to the user guide for details. Check available enclosure space and installation requirements before choosing a box.
Frequently Asked Questions
What do the 3000W RMS and 6000W peak ratings mean?
The listed RMS power handling is 3000W, while the peak rating is 6000W. Match your system planning to the RMS rating and your amplifier’s capabilities.
What impedance does the H124XR use?
It has a 4-inch dual 4-ohm voice coil. The wiring options can be used to match the amplifier and desired system impedance.
Can I use this subwoofer in a sealed or ported enclosure?
Both sealed and ported box configurations are listed. Consult the user guide for enclosure details.
What should I consider before installation?
Allow for the subwoofer’s roughly 70 lb weight, confirm the available space, and plan for a capable high-current amplifier and appropriate enclosure.
Explore More
Shop Massive Audio products at 12 Volt Outlet. Want to learn more about Massive Audio? Explore our Massive Audio brand profile.
| Size | 12" |
| Peak Watts | 6000 |
| RMS Watts | 3000 |
| Cone | Non-Pressed Paper |
| Voice Coil | 4" Dual 4 Ohm |
| Surround | Tall and Narrow Foam |
| Magnet | 377oz Strontium |
| Terminals | Heavy Duty Direct Input Wires Connection |
| Basket | Cast Aluminum |
| Tinsel Leads | Heavy Duty Triple |
| X-Max | 21.6mm |
| SPL | 93.54dB |
| Ported Box | See User Guide PDF |
| Sealed Box | See User Guide PDF |
| Fs | 43Hz |
| Re | See User Guide PDF |
| Le | See User Guide PDF |
| BL | See User Guide PDF |
| Qms | 3.119 |
| Qes | See User Guide PDF |
| Qts | See User Guide PDF |
| Vas | 16.841 L |
| Cms | 42.1 um/N |
| Mms | 324.295 g |
| Sd | 0.053 sq cm |
| Vd | 1.146 L |
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.
Loading amplifier suggestions…
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.
