Sound Barrier SB140D — 1″ High Frequency Compression Driver with 1.5″ Voice Coil
SB140D Overview
The Sound Barrier SB140D is a professional 1″ throat compression driver designed for high-output, high-clarity HF reproduction in live sound reinforcement and installed audio systems. It delivers 140W maximum power handling through a 1.5″ voice coil with a phenolic diaphragm, covering a frequency range of 1kHz to 15kHz. With a sensitivity rating of 102 dB and a nominal impedance of 8 ohms, the SB140D is suited for system integrators, touring engineers, and venue installers requiring reliable, high-efficiency HF performance. Distortion is rated at a maximum of 0.05%, reflecting a driver built for clean, controlled output under sustained load.
The SB140D features a screw-on mounting type for straightforward horn compatibility and secure installation, housed in a compact form factor measuring 4.7″ in diameter and 3.1″ in depth, with a 30 oz. magnet assembly providing a stable magnetic circuit.
Key Features
- 1″ Throat Diameter — Compatible with standard 1″ screw-on horn flares used across professional loudspeaker systems
- 1.5″ Voice Coil — Larger voice coil diameter supports increased power handling and improved thermal performance
- 140W Maximum Power Handling — Rated for high-output applications in live sound and fixed installation environments
- Phenolic Diaphragm — Provides a balance of durability and extended high-frequency response up to 15kHz
- 102 dB Sensitivity — High efficiency reduces amplifier demand and supports high SPL system designs
- 0.05% Maximum Distortion — Low distortion rating ensures clean HF reproduction at rated power levels
- 30 oz. Magnet Assembly — Substantial magnet structure supports consistent flux density and driver efficiency
- Screw-On Mounting — Simplifies horn attachment and replacement in both touring and installed applications
Technical Specifications
| Throat Size | 1″ |
| Voice Coil Size | 1.5″ |
| Power Handling (Max) | 140W |
| Diaphragm Material | Phenolic |
| Frequency Range | 1kHz – 15kHz |
| Sensitivity | 102 dB |
| Nominal Impedance | 8 ohms |
| Distortion | 0.05% max |
| Magnet Size | 30 oz. |
| Overall Diameter | 4.7″ / 120 mm |
| Overall Depth | 3.1″ / 79 mm |
| Mounting Type | Screw-On |
| Weight | 4.5 lb / 2.04 kg |
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