Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:Japan
Release dates:1972 - 1976
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 4
Dimension: 422 x 457 x 243mm
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Frequency Response:( 2dB) with Sony SLH tape: 7½ ips: 30 - 20,000Hz 3¾ ips: 30 - 15,000Hz
Wow and Flutter:7(RMS): 7½ ips: 0.04% 3¾ ips: 0.08%
Signal-to-Noise Ratio:normal tape: 54dB, SLH tape: 56dB
Sound quality rating:6 / 10
Long-term reliability rating: 7 / 10
Weight: 20.2 kg.
The TC 651 was an auto-reverse (playback only), quarter-track stereo deck with tape speeds of 7½ and 3¾ ips. Three separate motors and four heads were employed (erase, record, play and reverse play) with reels of up to 7″ being accommodated.
Other features included SOS, tape/source monitoring, normal or SLH tape selector switch, line/mic mixing, adjustable headphone output and ‘feather-touch’ solenoid transport controls.
Second from the top in the Sony range in 1972 (this distinction went to the TC 850-2), the TC 651 retailed
in Great Britain for £272.95
Harmonic distortion: less than 1.5% at rated output / Bias frequency: 120kHz / Rewind speed: 60 seconds (1800ft) / Inputs: mic: sensitivity -72dB (0.2mV), impedance 600 ohms line: sensitivity -22dB (0.07mV), impedance 100 Kohms / Outputs: line: 0dB (0.775V), impedance 100 Kohms headphones: impedance 8 ohms / Dimensions: 16½ x 18 x 9½ ” (422 x 457 x 243mm) / Weight: 44.6 lbs (20 kg) / quarter-track stereo