StudioMaster TRX218S Dual Subwoofer

Specification Details

Model StudioMaster TRX218S

Speaker Type Passive Dual Subwoofer

Configuration 2 × 18-inch

LF Drivers 2 × 18-inch

LF Voice Coils 4-inch

Continuous Power 1200W

Peak Power 4800W

Impedance 4Ω

Sensitivity 100dB (1W/1m)

Maximum SPL 137dB

Frequency Response 33Hz–150Hz

Dimensions (W × H × D) 1200 × 520 × 700mm

Net Weight 84kg

Amplification Passive – External Power Amplifier Required

StudioMaster TRX218S Dual 18-Inch 1200W Passive Subwoofer

The StudioMaster TRX218S is a professional passive dual 18-inch subwoofer designed for large-scale stage performances, auditoriums, event venues, DJs, bars, clubs, and high-performance professional sound reinforcement systems.

Featuring two 18-inch LF drivers with 4-inch voice coils, the StudioMaster TRX218S delivers powerful, deep, and energetic low-frequency reproduction. Its dual large-format woofer configuration enhances bass performance, providing an impressive low-frequency foundation for live performances and large-scale events.

The subwoofer offers 1200W continuous power, up to 4800W Peak power, a 4Ω nominal impedance, 100dB sensitivity (1W/1m), a maximum sound pressure level of 137dB, and a frequency response of 33Hz–150Hz according to the published specifications.

With its ability to reproduce frequencies down to 33Hz, the TRX218S delivers deep bass, powerful kick drums, and immersive low-frequency effects. It is an excellent solution for enhancing the low-frequency performance of full-range speakers, line array systems, and professional PA installations.

In addition to its audio performance, the StudioMaster TRX218S features a large and robust enclosure designed for demanding high-power applications. With dimensions of 1200 × 520 × 700mm and a net weight of 84kg, it is built for professional sound systems requiring powerful and consistent bass performance.

1. Dual 18-Inch Configuration – Powerful and Deep Bass

One of the key highlights of the StudioMaster TRX218S is its dual 18-inch subwoofer configuration.

Featuring two large-format LF drivers, this design enhances low-frequency reproduction, delivering deep, powerful, and energetic bass performance.

The Dual 18-inch configuration is particularly suitable for large-scale audio productions where powerful bass output and impressive low-frequency impact are essential.

With both LF drivers housed in a single enclosure, the TRX218S provides an effective low-frequency reinforcement solution for professional PA systems.

It is ideal for live stages, DJ performances, bars, clubs, outdoor events, and music productions requiring high-performance bass reproduction.

2. 4-Inch Voice Coils – Designed for High-Power Operation

The StudioMaster TRX218S features two 18-inch LF drivers equipped with 4-inch voice coils.

The large voice coil design is intended to meet the demands of high-power subwoofer applications, supporting signal handling and low-frequency reproduction in professional sound systems.

Combined with its Dual 18-inch configuration, the 4-inch voice coils make the TRX218S suitable for low-frequency reinforcement in large venues and demanding live performance environments.

3. 1200W Continuous Power – Professional Audio Performance

The StudioMaster TRX218S offers 1200W Continuous power and up to 4800W Peak power according to the published specifications.

This power rating makes it suitable for low-frequency reinforcement in large-scale professional sound systems.

As a passive subwoofer, the TRX218S requires an external power amplifier capable of stable operation at a 4Ω load and suitable power delivery.

Its passive design allows sound engineers to select amplifiers, signal processors, and power distribution configurations according to their specific system requirements.

When properly configured, the TRX218S can deliver excellent performance in professional stage systems, auditoriums, DJ setups, and event sound reinforcement applications.

4. Frequency Response: 33Hz–150Hz – Deep and Powerful Bass Reproduction

The StudioMaster TRX218S offers a frequency response of 33Hz–150Hz according to its published specifications.

This dedicated low-frequency range allows the subwoofer to reproduce bass content that conventional full-range speakers may not fully reproduce on their own.

• Sub-bass frequencies: Reproduce very low-frequency content, creating a deep and powerful listening experience.
• Low bass frequencies: Deliver electronic drums, kick drums, and other low-frequency musical elements.
• Upper bass frequencies: Add fullness and energy to the musical foundation, making the overall sound system more dynamic.

Its ability to reproduce frequencies down to 33Hz makes the TRX218S particularly suitable for electronic music, DJ performances, live bands, stages, and outdoor events.

5. 100dB Sensitivity – Efficient Acoustic Output

The StudioMaster TRX218S features a sensitivity rating of 100dB measured at 1W/1m according to the published specifications.

Sensitivity indicates the sound pressure level produced by a speaker when receiving 1W of input power at a measurement distance of 1 meter.

With its 100dB sensitivity, the TRX218S is designed to deliver effective low-frequency reinforcement in professional sound systems.

Combined with two 18-inch LF drivers and 1200W Continuous power, the subwoofer provides a powerful bass foundation for large performance environments.

6. 137dB Maximum SPL – Powerful Bass for Large Venues

One of the standout features of the StudioMaster TRX218S is its maximum sound pressure level of up to 137dB according to the published specifications.

This high SPL capability makes the subwoofer suitable for low-frequency reinforcement in large spaces where powerful sound performance is required.

When combined with compatible full-range speakers or line array systems, the TRX218S adds low-frequency energy, creating a fuller and more impactful overall sound.

It is an excellent solution for large stages, outdoor events, DJ performances, bars, clubs, and professional entertainment venues.

7. 4Ω Impedance – Professional Power Amplifier Integration

The StudioMaster TRX218S features a nominal impedance of 4Ω according to the published specifications.

Impedance is an important factor when selecting a suitable power amplifier for the subwoofer.

Users should choose an amplifier capable of stable operation at 4Ω while providing appropriate output power and speaker control.

Correct impedance and power matching help ensure stable system operation, maximize bass performance, and reduce potential risks during operation.

For optimal performance, professional DSP processors or crossover systems are recommended to manage frequency distribution between the subwoofer and full-range speakers.

8. Large and Robust Enclosure – Professional System Design

The StudioMaster TRX218S features a large and robust enclosure designed to accommodate two 18-inch LF drivers.

Its cabinet construction is optimized for low-frequency applications, supporting the operation of the dual bass driver system in professional audio environments.

The large enclosure houses both LF drivers in a single cabinet, providing a powerful Dual 18-inch subwoofer solution.

With a net weight of 84kg, the product is intended for professional installations, permanent stage systems, and event production companies equipped with appropriate transportation and handling equipment.

9. Dimensions: 1200 × 520 × 700mm – Professional Installation

The StudioMaster TRX218S features overall dimensions of 1200 × 520 × 700mm (W × H × D).

Its large cabinet accommodates two 18-inch LF drivers, creating a professional subwoofer configuration designed for large-scale sound reinforcement systems.

The subwoofer can be positioned near the stage, in front of the main speaker system, or arranged in dedicated subwoofer configurations depending on the acoustic design of the venue.

When deploying multiple subwoofers, sound engineers should consider positioning, polarity, delay, and DSP configuration to optimize low-frequency performance and system alignment.

10. Applications of the StudioMaster TRX218S

With its Dual 18-inch configuration, 1200W Continuous power, 4800W Peak power, 137dB Max SPL, and 33Hz–150Hz frequency response, the StudioMaster TRX218S is suitable for a wide range of professional audio applications:

• Large-scale professional stage sound systems.
• Outdoor music events and festivals.
• Auditoriums and performance centers.
• Professional DJ sound systems.
• Bars, clubs, and beer clubs.
• Electronic music stages.
• Live bands and music performances.
• Sports arenas and large entertainment venues.
• High-power professional PA systems.
• Line array systems with subwoofer reinforcement.
• Professional mobile sound reinforcement systems.

11. StudioMaster TRX218S – A Professional Dual 18-Inch Subwoofer Solution

Combining two 18-inch LF drivers, 4-inch voice coils, and 1200W Continuous power, the StudioMaster TRX218S provides a powerful low-frequency reinforcement solution for professional sound systems.

Its 33Hz–150Hz frequency response delivers deep, solid, and energetic bass. With 100dB sensitivity and 137dB Maximum SPL, the subwoofer supports powerful sound performance in large venues and demanding live performance environments.

Its passive design and 4Ω impedance allow sound engineers to integrate the subwoofer flexibly with professional power amplifiers, DSP processors, full-range speakers, and line array systems.

The StudioMaster TRX218S is an excellent choice for large stages, outdoor events, auditoriums, DJ applications, bars, clubs, and high-performance professional PA systems.

StudioMaster TRX218S – Deep Bass, Powerful Performance, Professional Sound Reinforcement.