The SL22 is a precision sound level limiter designed to protect hearing, equipment and venue compliance. It maintains consistent, transparent control of audio levels without compromising sound quality, ensuring both safety and performance in any professional environment.
The SL22 helps workplaces and venues comply with Noise at Work regulations by controlling exposure to high sound levels. It includes a dedicated headphone output limiter to protect regular headphone users such as DJs, sound engineers and students. Additional rear connectors allow for remote data logging or the triggering of external warning devices.
Designed for clubs, theatres, schools and public venues, the SL22 provides precise, transparent control over system volume to ensure compliance with Local Authority Noise Regulations. Unlike crude systems that simply cut power or disconnect speakers, the SL22 limits levels smoothly and unobtrusively, maintaining audio quality while preventing excessive sound pressure. Tamper-resistant controls and the option to integrate with fire alarms or remote volume dimming systems provide additional security and flexibility.
The SL22 also prevents damage to speakers and amplifiers by catching unwanted transients such as bangs and pops. By protecting against over-level signals, it reduces repair costs, system downtime and the risk of failure during live performance - safeguarding both your investment and your reputation.
Building on Drawmer's 30 years of expertise in professional dynamics control — and the success of the SP2120 Speaker Protector - the SL22 combines flexibility with simplicity. Two front-panel presets allow installers to set both protection threshold and maximum system level, hidden behind a lockable security plate with tamper-evident seal. Three LED indicators provide clear at-a-glance monitoring of system status.
Rear panel connectivity includes balanced XLR inputs and outputs (with optional tamperproof locking bracket), a limited headphone output, and external control ports for fire alarm triggers, operator override or data logging. These features make the SL22 far more versatile than typical sound level limiters, giving installers and venue operators total confidence in both compliance and protection.
