Grommes~Precision SLS Speaker Lightning Suppressor

Protect Your Audio Equipment from Lightning-Induced Surges

Lightning strikes are unpredictable—but the damage they cause doesn’t have to be. The Grommes~Precision SLS Speaker Lightning Suppressor is specifically engineered to protect audio equipment from the most common cause of lightning-related failure: induced electrical surges.

Unlike direct lightning strikes, which are rare, lightning more commonly induces high-voltage surges into long speaker and input lines. These sudden voltage spikes can severely damage amplifiers, mixers, processors, and other connected electronics. The SLS is designed to clamp these dangerous surges before they reach your equipment.

How the SLS Protects Your System

When electrical current exceeds the SLS protection threshold:

• The device immediately clamps the surge

• Simulates a short circuit to divert damaging energy

• Automatically resets once the surge dissipates

• Provides continuous, ongoing protection

The SLS installs directly into the speaker line, creating a protective barrier between your amplifier and your distributed speaker system.

Triple Protection Technology

The Grommes~Precision SLS provides three levels of protection:

• Primary & Secondary Protection

• Series Protection

• Shunt Protection

This layered defense system ensures comprehensive protection against lightning-induced electrical surges, making it ideal for commercial and installed audio systems with long cable runs.

Designed for Commercial & Installed Audio Systems

The SLS is especially important in environments where:

• Long 70V or distributed speaker lines are used

• Outdoor speakers are installed

• Large buildings or campuses are connected by extended wiring

• Equipment downtime is costly

Ideal for:

• Churches

• Schools

• Warehouses

• Industrial facilities

• Municipal buildings

• Outdoor audio installations

Grommes~Precision SLS Key Features

• Protects against lightning-induced surges

• Installs directly into speaker line

• Automatic reset after surge event

• Triple protection design (Primary/Secondary, Series, Shunt)

• Designed for long-distance speaker wiring

• Commercial-grade reliability

• 5-year manufacturer warranty

• 30-day money-back guarantee

Why Surge Protection Matters for Audio Systems

Many amplifier failures in distributed audio systems are caused not by overload—but by induced voltage spikes traveling through speaker lines during storms. Installing a speaker line suppressor like the SLS significantly reduces risk and protects your investment.

With over 50 years of experience in protection technology, Grommes~Precision is a trusted name in commercial audio reliability.