Technical Details
Brand: Sony
Model:TC-8750-2
Category:Super High Fidelity
Application:Semi-Pro
Electronics:Solid State
Equalization:NAB
Country of Manufacture:Japan
Release dates:1975 - 1980
Tracks:1/2 Rec/Play+1/4PB
Speeds: 7 1/2
Max Reel Size("): 10.5"
Number of heads: 4
Dimension: 435 x 515 x 265 mm
Head Composition: Ferrite
Head Configuration: Stereo - Stacked
# Motors: 3
Voltage(s): 100v Japan
Outputs: XLR, RCA, 1/4" Headphone
Frequency Response:20 Hz ~ 40 kHz ± 2 dB (38cm/s, Duad Tape)
Wow and Flutter:.02% @ 15 Ips - .03% @ 7.5 Ips
Signal-to-Noise Ratio:65 DB - 60 DB (SLH Tape)
Sound quality rating:7 / 10
Long-term reliability rating: 8/ 10
Weight: 36.5 kg.
Additional Details
Description
The TC 880-2 was a 2 track stereo record with a 4 track stereo playback head with 38 and 19 cm/s speeds
Logic -controlled tape transport for the main capstan- direct drive from an AC servo-controlled motor with an outer-rotor inertia flywheel for the secondary capstan. Two induction reel motors are used for take-up and fast forward.
Considered by many to be the best / most serious looking tape recorder made by Sony or perhaps any other Japanese company. It also had a LED display for record/playback levels with a peak reading hold setting which was leading edge in the 70s.
Stepped Attenuator potentiometers for Record and Playback with 2dB increments (Stepped attenuators are much more expensive than regular potentiometers)
– 4-Digit Tape Counter in Minute/Seconds (Actual elapsed time at 15 ips- Multiply by 2 for 7.5 ips)
– 3 position equalization and 2 position Bias Selector switches, – Variable-speed Pitch-control
– Headphone Volume-control
– Walnut side panels
This was a very heavy machine weighing 80.4 lbs or 37 kg.
Service Considerations
– Difficult machine to service
– In addition to bad transistors, relays and the edge-connector socket are also common issues. Check to see if there are any cracks in the edge connector hanging off the lower unit. Apparently it’sa very common problem.
– Sony custom made IC’s that can’t be found if something goes wrong
– Remote socket on the rear has to have a dummy plug inserted for the machine to function (or the remote plugged-in)
Additional Info
Production Years 1975-1980
New Price ¥ 550,000
Heads Four- All Ferrite 2 Track Erase, Record and playback – 4 Track playback
Motors Three Motor Direct Drive (no belts except counter)
Maximum Reel Size 10½ ”
Tape Speeds 15 and 7½ ips
Frequency Response 7.5 IPS +- 2 dB
25 – 20k low noise tape
25 – 25k SLH
30 – 30k FeCr
Frequency Response 15 IPS +- 2 dB
25 – 30k low noise tape
25 – 35k SLH
20 – 40k FeCr
20 Hz ~ 40 kHz ± 2 dB (38cm/s, Duad Tape)
25 Hz ~ 30 kHz ± 2 dB (19cm/s, Duad Tape)
Wow & Flutter
15 ips: 0.02% RMS weighted ±0.03% DIN
7½ ips: 0.03% RMS weighted ±0.04% DIN
Signal to noise ratio
65 DB FeCr
62 DB SLH
59 DB low noise
Harmonic distortion 0.5% with FeCr tape
Semi-conductors
150 transistors, 5 ICs 114 diodes and 4 FETs
Bias frequency 160kHz
Rewind Speed 2 minutes and 10 seconds with 2,427 ft (740m) tape
Real Time Tape Counter
Inputs
microphone: 0.2 mV (- 72dB), impedance 600 ohms
line: 60 mV (- 22dB), impedance 100 K DIN
Outputs
line: impedance 10 K, output level 435 mV (0 dB)
headphones: 8 ohms DIN
Dimensions
18.4 x 20.4 x 10.5″ (465 x 515 x 265mm)
Weight
80.4 lbs (37 kg)
Optional Remote Control Sony RM-16
A similar model was released outside of Japan as the TC-880-2