Celto Pro · SUBIUM Series
SU121TL G2
SKU: SU121TL-G2
High-performance 21-inch transmission line subwoofer with 1600W RMS power handling.
- Max SPL
- 135 dB RMS / 141 dB Peak
- Frequency Response
- 33 Hz – 800 Hz
- Driver Configuration
- 21"
- Dispersion
- Omni in usable range
- Weight
- 76 kg (167.6 lb)
2-year distributor warranty · Original product · Engineering support
Overview
The Celto Pro SU121TL G2 is a premium transmission line subwoofer engineered for demanding acoustic installations and professional sound reinforcement. Featuring a high-excursion 21-inch CELTO 21SW2000-8 transducer with a 4.
5-inch (115 mm) voice coil, it delivers exceptionally deep and precise low-frequency reproduction down to 33 Hz. With a power handling of 1600 W RMS (6400 W Peak) and a maximum peak SPL of 141 dB, it ensures outstanding acoustic pressure and clarity. Built from marine-grade Baltic birch plywood with a rugged polyurea coating and dual M20 thread sockets, the SU121TL G2 offers ultimate durability and versatility for both touring and permanent venue integration.
141 dB
MAXIMUM PEAK SPL
33 Hz – 800 Hz · Frequency Response
Technical Specifications
SU121TL G2 · SKU SU121TL-G2
| ACOUSTIC PERFORMANCE | |
|---|---|
| Speaker type | Transmission line Subwoofer |
| Power Handling (AES standard) | 1600 W RMS / 6400 W peak |
| Nominal impedance | 8 Ω |
| Average sensitivity | 103 dB / 1 W / 1 m |
| Maximum SPL (calculated) | 135 dB RMS / 141 dB Peak |
| Frequency response (-6 dB no preset) | 33~800 Hz |
| Nominal directivity (-6 dB) | Omni in usable range |
| Crossover | No, active mode only |
| DRIVERS | |
| LF | 21" CELTO 21SW2000-8 |
| Woofer Chassis | Die Cast Aluminium |
| Woofer Voice coil | 4.5" / 115 mm long throw |
| CABINET & MOUNTING | |
| Cabinet | Marine grade Baltic Birch PlywoodHeavily braced with Tongue & Groove |
| Cabinet finish | Touring Grade Rubberized PolyUrea Black coatingAcoustic PU foam behind Front grill |
| Flying hardware | No |
| Mounting hardware | 2pcs M20 thread socket |
| CONNECTIVITY | |
| Connectivity | Genuine NEUTRIK 2pcs Speakon NL4MP |
| PHYSICAL | |
| Speaker size (HxWxD) | 850 × 590 × 770 mm (33.5 × 23.2 × 30.3 in) |
| Speaker Weight | 76 kg (167.6 lb) |
| Shipping information | 87 kg990 x 690 x 870 |
| Accessories | SU121TL-SBAG (padded cover bag)CPC-70 (pole bar with crank)SUBWHKIT100C (castor wheel kit) |
SU121TL G2 · 2-year distributor warranty · Original product · Engineering support
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Frequently Asked Questions
What is the price of SU121TL G2?
Pricing depends on your project configuration. Contact our engineering team to determine the most suitable setup and receive a current quote.
What does the distributor warranty cover?
Every system we install is our direct responsibility for two years against manufacturing defects, with scheduled measurement, calibration and maintenance support.
How is product originality guaranteed?
We import all required parts and products directly from the manufacturer's factory, preserving the authenticity of the system.
How does the design & quote process work?
Let us build the acoustic infrastructure of your project to engineering standards with needs analysis, detailed venue exploration, and accurate technical guidance.
2-year distributor warranty · Original product · Engineering support