Technics RS-745U

Commentary

A tape deck with four channel recording and playback functions added to the RS 715 u.

An HPF head is used for recording 4 ch.

The capstan motor uses a high-torque hysteresis synchronous type, and the tape speed is controlled by changing the number of poles between 4 and 8.
Also, the Little Motor uses an induction type.
Each is directly connected to the reel stand to improve stability of tape running.

2 ch is equipped with a function of reciprocating playback.
It uses a foil sensing method and also has a delay device to prevent unpleasant sound and damage to the tape.

The monitor switch is of channel independent type and the source / tape can be switched for each channel.

It is operated by electromagnetic operation with light feather touch, and remote control is also possible.

Each channel for multi-recording is equipped with an independent record select switch.

Microphone Line It is equipped with an independent input adjustment knob to enable mixing recording.

Model Rating

Type	4-track multichannel tape deck
Recording bias system	AC:160kHz
Erasing method	AC erasing method
Track system	4-track 4 ch, 4-track 2 ch
Tape speed	19cm/s, 9.5cm/s
Head Used	Recording : HPF Play, Invert Play : Permalloy (1 each) Erase : 1 ferrite
Motor used	For capstan : Hysteresis synchronous motor x1 For Reel : 2 Induction Motors
Frequency characteristic	19cm/s : 40 Hz to 22000 Hz, ± 3 dB
Wow flutter	19cm/s:0.10%
Signal-to-noise ratio	54 dB or more
Input	MIC: Maximum input sensitivity : 0.22 mv (-73dB) Compatible MIC impedance : 600 Ω ~ 20k Ω Line In: Maximum input sensitivity : 70 mv (-23dB)
Output	Line Out: Reference output level : 0.5 V Load impedance : 50k Ω or more
DIN connector	REC/PB(EIAJ)
Pwer	100 VAC, 50Hz/60Hz
Power consumption	Approx. 99W
External dimensions	Width 435x Height 546x Depth 228 mm
Weight	Approx. 26 kg