Turbosound TS-MS121 | 21in Subwoofer - 142dB SPL | Touring & Install with Cardioid Capability

Turbosound TS-MS121  (TurboSound MS121)

21" Passive Subwoofer

Turbosound TS-MS121 is a high-performance 21" subwoofer engineered for both touring and installation environments. With cardioid-array capabilities, flyable suspension, and seamless integration with Lab Gruppen and Lake DSP systems, it delivers deep, controlled bass with exceptional flexibility for modern sound reinforcement setups.

Turbosound TS-MS121 Competitive Differences

• 2000W continuous / 8000W peak power with 142dB SPL output
• Cardioid-arrayable with front/rear NL4 connectors for advanced pattern control

Turbosound TS-MS121 Description

The Turbosound TS-MS121 is a powerful 21" passive subwoofer that brings deep low-frequency extension and precise control to portable, installed, or touring sound systems. Utilizing a neodymium driver in a reflex-loaded design, it achieves a remarkable frequency range down to 20Hz with a peak output of 142dB. Designed with cardioid deployment in mind, the MS121 offers advanced arraying options including electronic delay steering for optimized rear rejection. The subwoofer features a 4-point rigging system for suspension—either standalone or in combination with MV210-HC line arrays—supporting up to 9 units at a 10:1 safety factor. The rugged enclosure is crafted from Baltic birch plywood with a tour-grade finish, ensuring reliability in demanding conditions. For ground stack setups, integrated feet and stacking recesses provide added stability, while the M20 pole mount allows use with satellite speakers. NL4 connectors on both the rear and front panels simplify signal routing for standard or cardioid applications.

Model Features

• 21" neodymium driver in a reflex-loaded enclosure
• 2000W continuous, 8000W peak power handling
• Up to 142dB maximum SPL
• Cardioid-arrayable with front and rear connectors
• Optimized for use with Lab Gruppen amps and Lake DSP
• 4-point flyable rigging system supports mixed arrays
• Ground stacking feet with stacking recesses
• M20 threaded pole mount for satellite configurations
• Weather-resistant IP54-rated enclosure

Model Specifications

• Frequency Response (-3 dB): 25 Hz – 95 Hz
• Frequency Response (-10 dB): 20 Hz – 200 Hz
• Max SPL: 142 dB
• Power Handling: 2000W continuous / 8000W peak
• Sensitivity: 97 dB (1W @ 1m)
• Nominal Impedance: 8 Ω
• Dispersion: Omnidirectional (configurable cardioid)
• Driver: 1 x 21" (530 mm) neodymium LF
• Connectors: 3 x twist-lock NLT4MP STX (rear + front)
• Wiring: Pins 1+/1- LF, Pins 2+/2- LINK (Front: Pins 2+/2- only)
• Dimensions: 23.6 x 30.6 x 31.5 in (599 x 777 x 800 mm)
• Weight: 192.7 lb (87.4 kg)
• Enclosure: 21 mm and 18 mm marine birch plywood
• Finish: Polyurethane black
• Grille: Powder-coated perforated steel
• IP Rating: IP54

What's In The Box

• TS-MS121 subwoofer
• User documentation