Country of Manufacture:USA
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
# Motors: 2
Frequency Response:(all 2 dB): 15 ips: 50Hz - 15kHz
Wow and Flutter:less than 0.3 % 15 ips
Sound quality rating:4 / 10
Long-term reliability rating: 4 / 10
First appearing about 1950, the PT6 underwent very few changes by the time this version, the PT6-AH tape mechanism and accompanying amplifier PT6-J were advertised in the Allied radio catalog of 1955.
The transport had two motors, one hysteresis synchronous for all forward functions and a shaded pole motor for rewind only. Earlier versions had a single speed drive with a capstan sleeve for speed change whilst later versions had both the sleeve and a two speed motor.
Rewind speed: 40 seconds for 1,200 ft reel / Audio output power: 10 watts / Inputs: low impedance mic input, bridging input / Outputs: 600-ohm, balanced zero-level, 16 or 4 ohm audio output / Speaker(s): 5″ monitor / Dimensions: tape mechanism: 18 x 17 x 8″, amplifier: 18 x 14 x 8″ / Weight: tape mechanism: 4 6lbs (20.9 kg), amplifier: 32 lbs (14.5 kg) / half-track mono