Goldline APT2 Polarity/Phase Detector

The Goldline APT2 works on tweeters, mid-ranges, woofers, subwoofer speakers and cabinets, equalizers, amplifiers and crossovers. With this handy instrument an entire speaker system can be checked in only seconds. The Polarity/Phase Detector (APT) and Pulse Generator (PG) are supplied as separate units.

Inputs - APT2:

• PG - None
• APT - ¼" Phone jack - auxiliary microphone input - impedance 20k ohms

Outputs - APT2:

• PG - ¼" Phone jack - to drive loudspeaker directly - impedance 4 - 16 ohms
• - ¼" Phone jack - to drive amplifier directly - impedance 50 ohms
• APT - None

APT Microphone:

• Built-in omnidirectional electret condenser.
• Required Acoustic Level At APT:
• 70dBc to >110dBc.

APT Display:

• Single LED for positive-going pulse polarity. 300ms ON duration.
• Single LED for negative-going pulse polarity. 300ms ON duration.

PG Display:

• Single LED positive-going pulse with 1s repetition rate.

PG Line Pulse Output:

• Amplitute: APT2 - 0.4V peak typical / APT2B - 0.8V peak typical.
• Rise time: <100 µs.
• Fall time: 40ms typical.
• Duty factor: 0.3% typical.
• Battery drain: 1.1mA average.

PG Speaker Pulse Output:

• Amplitute: 6.5V peak (14 watts) to 4 ohm loudspeaker.
• Rise time: <100 µs.
• Fall time: 1.5ms typical.
• Duty factor: 0.15% typical.
• Battery drain: 3.2mA with 4 ohm loudspeaker.

Power Requirements:

• PG - 9V battery
• APT - 9V battery

Size (W x H x D); Weight:

• PG - 3" x 5½" x 1-3/4"; 7 oz.
• APT - 3" x 5½" x 1-3/4"; 7 oz.

Case Material:

• High impact ABS