| 1973 Sony TC-755 |
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A two speed (3¾ & 7½ ips), three head tape deck with a 10½" reel capability, closed loop dual capstan tape drive which reduced wow & flutter to a minimum, logic controlled transport functions which permitted the feather-touch control buttons to be operated in any sequence, at any time without spilling or damaging tape, an AC servo control capstan motor and an eight-pole induction motor for each of the two reels. Other features included a record equalization switch for maximum record/playback characteristics with either normal or special tapes, mic attenuators to eliminate distortion when the microphone pre-amp stages were overdriven and a tape/source monitoring switch to take full advantage of the separate Ferrite and Ferrite record and playback heads. Additional images, test report and circuit diagram for this recorder are featured on the CD-ROM. |
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| Specifications at a glance |
Model |
TC-755 |
Year |
1973 |
Price when new (in the
USA) |
$699 (Audio magazine review, 1975) |
Track system |
quarter-track stereo |
Heads |
Ferrite & Ferrite record, F&F playback and erase |
Motors |
AC servo control capstan motor, 2 x 8-pole induction reel motors |
Maximum reel size |
10½" |
Tape speeds |
7½ and 3¾ ips |
Frequency response ( Sony SLH tape |
7½ ips: 30Hz -
25kHz 3¾ ips: 40Hz - 16kHz |
Wow & flutter |
less than 0.05%at 7½, less than 0.08% at 3¾ ips |
Signal to noise ratio |
53 dB (normal tape) 56 dB (SLH tape) |
Distortion |
less than 1.2% |
Semi-conductors |
56 transistors, 1 IC, 2 FETS, 41 diodes |
Inputs |
mic - low impedance, -72
dB (0.2mV) line - 100k ohm impedance, -22 dB (60mV) DIN - 3.9k ohm impedance |
Outputs |
line - 100k ohm impedance,
-5 dB (430mV) DIN - 8.2k ohm impedance, -5 dB (430mV) headphones - 8 ohm |
Dimensions |
17.2 x 17.75 x 8.7" (435 x 451 x 221mm) |
Weight |
52lb 15oz (24 kg) |