Country of Manufacture:Japan
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Quad
# Motors: 3
Frequency Response:( 3dB): 7½ ips: 30Hz - 20kHz 3¾ ips: 30Hz - 15kHz
Wow and Flutter:0.12% at 7½ ips, 0.2% at 3¾ ips
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
With the introduction of the QT 6600, Pioneer’s total system of four-channel stereo (quadraphonic)
was now complete.
The QT 6600 (which was based on the stereo T-6600) was a two speed (7½ and 3¾ ips) tape deck featuring five heads, a 7″ maximum reel capacity and a single motor with a belt-drive mechanism that combined
simplicity with a high level of precision design and stability.
This was quite an affordable quadraphonic deck, retailing for $600 in the US and $780.00 in Australia
in 1971 (information from the 1974 Australian Hi-Fi Stereo Buyer’s Guide)
Hum and noise: better than 55dB / Rewind speed: 110 seconds for 1200ft / Inputs: microphone: 0.3mV 50K, line: 30mV 330K / Outputs: line: 0.775V 50K. headphones: 0.2mW 8 ohms / Dimensions: 17.25 x 19 x 7.1″ (438 x 483 x 181mm) / Weight: 37 lbs (16.8 kg) / four-channel stereo