Outline FASTQC-LS Loudspeaker Fast Quality Control
Say goodbye to lengthy loudspeaker testing and hello to the Outline OUTLINE FASTQC-LS. It is a compact device that gives you fast, accurate loudspeaker diagnostics on the spot. Whether you’re on a busy tour or setting up a line-source system, it lets you find electric faults quickly so you can keep your show on the road.
Fast, Reliable Checks Wherever You Are
Designed specifically for touring applications, the FASTQC-LS requires no external power and runs on a single 9V battery. You can test one speaker at a time even in noisy, dynamic environments without worrying about power availability. All thanks to its smart auto power-off feature. The device measures the DC resistance of each speaker way—a stable metric that quickly reveals disconnected wires and blown coils.
Easy to Use with Clear Results
Connect your loudspeaker to the FASTQC-LS via a short link cable using its NL4 or LKI8 connectors. Navigate through a scrollable list of presets tailored to popular systems such as GTO, Butterfly, and more. An LCD screen with backlight and colored LED indicators delivers straightforward feedback with result codes like OK, Open Circuit, Low Resistance, or High Resistance—making fault diagnosis quick and unambiguous.
Compact, Rugged Design
With its lightweight yet sturdy build, measuring just 106 mm wide by 168 mm deep and 140 mm tall, the FASTQC-LS is perfectly suited for field use. It features a physical power switch and four dedicated buttons for measurement, backlight, and navigation. Manufactured in Italy by Outline S.R.L., this tool meets CE certification and complies with European waste directives, ensuring both quality and environmental responsibility.
Key Features
- Fast quality control designed for loudspeaker touring systems
- Measures DC resistance to detect electric faults reliably
- Works with popular loudspeaker presets, including GTO and Butterfly
- Battery-powered with auto power-off for efficient field use
- Clear LCD display and LED indicators provide instant diagnostics
- Compact, durable design made in Italy with CE certification


