SYSTEM 2000™
Speaker Polarity Testing System

The SYSTEM 2000 Polarity Testing System is a small hand-held audio testing tool. It is powered by a 9 Volt battery, and is designed to determine the direction of movement of a loudspeaker. This device features an internal microphone, a red LED, a green LED, and a push-on switch, The SYSTEM 2000 automatically turns off after approximately five minutes to conserve battery life.

Specialized polarity pulses are provided on a test CD that comes with the SYSTEM 2000. The recorded pulses and the hand-held detector feature a unique method of self authentication whereby the system actually checks itself to ensure proper readings.

The SYSTEM 2000 CD also contains other test signals which you may find useful in setting up your system. Sine wave sweeps, Pink Noise test signals, channel ID announcements, and music selections are included on the CD. A carrying and storage case is provided for the SYSTEM 2000.

In use, the special test pattern of pulses causes a repeating green-green-red indication on the LED's. If the pattern is red-red-green, then the absolute phase of your system is reversed. This device is useful for testing relative as well as absolute phase. The most important thing is for all speakers to be properly phased relative to each other. However, absolute phase has been reported to be audible as well.

A review of this product can be found in Bill Gaw's Audiolics Anonymous column, Chapter 25. Please click here for this review.