TGSP - Tone Generator and Speaker Polarity Tester

The Recoil TGSP is a dual-function tool that combines a variable tone generator with a 9V speaker polarity tester, giving installers everything needed to dial in and verify an audio system from a single device. With an output range of 0–8 volts across 13 to 10,000Hz, it covers the full spectrum of audio system diagnostics — from setting gain levels to confirming crossover points. Compact controls and auto shutoff make it practical for both shop use and mobile installs.

• Variable tone generator outputs 0–8V across a 13–10,000Hz frequency range for precise system calibration.
• 9V speaker popper provides a quick visual check of speaker connection polarity.
• Adjustable control knobs allow independent tone and level adjustments during testing.
• Includes RCA cables and alligator clips for flexible connection to amplifiers, head units, and speakers.
• Auto shutoff extends battery life during extended diagnostic sessions.
• Suitable for setting system levels, checking crossover points, verifying connections, and general troubleshooting.