Sound Barrier SB120D — 1″ High Frequency Compression Driver
SB120D Overview
The Sound Barrier SB120D is a professional 1″ throat compression driver engineered for high-output loudspeaker applications requiring reliable high-frequency reproduction. Built around a 1.5″ voice coil and a phenolic diaphragm, the SB120D delivers 120W maximum power handling with a sensitivity rating of 102 dB and a nominal impedance of 8 ohms. Its frequency range spans 1 kHz to 14 kHz, making it well-suited for use in installed sound systems, touring rigs, and custom enclosure builds. System integrators, loudspeaker manufacturers, and touring engineers will find the SB120D a dependable high-frequency transducer for demanding applications.
The SB120D features a screw-on mounting type for secure, repeatable horn attachment, and its compact form factor measures 4.3″ in diameter and 3.1″ in depth, keeping overall system weight and footprint manageable at 3.6 lb.
Key Features
- 1″ Throat Diameter — Compatible with standard 1″ screw-on horn flares for broad system integration flexibility
- 1.5″ Voice Coil — Larger voice coil diameter supports increased power handling and improved thermal performance
- 120W Maximum Power Handling — Suitable for high-output professional loudspeaker systems in live and installed environments
- 102 dB Sensitivity — High sensitivity rating reduces amplifier headroom requirements and supports efficient system design
- Phenolic Diaphragm — Phenolic material provides consistent high-frequency response and durability under sustained use
- 1 kHz to 14 kHz Frequency Range — Covers the critical high-frequency band for full-range loudspeaker system integration
- 0.05% Maximum Distortion — Low distortion figure supports clean, accurate high-frequency reproduction at professional SPL levels
- 23 oz. Magnet — Substantial magnet assembly contributes to motor efficiency and consistent driver performance
Technical Specifications
| Throat Size | 1″ |
| Voice Coil Size | 1.5″ |
| Power Handling (Max) | 120W |
| Diaphragm Material | Phenolic |
| Frequency Range | 1 kHz to 14 kHz |
| Sensitivity | 102 dB |
| Nominal Impedance | 8 ohms |
| Distortion (Max) | 0.05% |
| Magnet Size | 23 oz. |
| Overall Diameter | 4.3″ / 110 mm |
| Overall Depth | 3.1″ / 79 mm |
| Mounting Type | Screw-On |
| Weight | 3.6 lb / 1.6 kg |
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