Technics RS 10 A 02 Owners Manual

Page 2

The Superiority of the Isolated

Loop Transport

Tape Transport Performance
Requirements

For any professional application. a tape transport must

provide.

I) Correct and stable tape speed which is free t'rorn speed
variation or deviation. regardless of tape position.

3) Very low wow and flutter.

R) Very low. stable tape tension to maintain optimum tape-to-
hcad contact and minimize modulation noise. level fluctua-
tions. head wear. and dropouts.

4) Quick start-up to rated speed without hunting and over-
shoot.

The Technics R&B Series Isolated Loop system more than meets

all of these requirements. As explained below. this transport is

inherently superior to conventional designs. [It tact, performance
lS so stable and precise that it reveals inaccuracies in the very

test tapes used to measure such basic parameters as wow and

flutter and speed deviation.

Technics Single Capstan vs.
Conventional Double Capstan

Although both the Single capstan isolated loop and double
capstan closed loop transports are designed to reduce the
influence ot' tape tenston fluctuations caused by reel torque,
the Technics single capstan system has significant advantages.
The double capstan approach depends on variations in the
speed oi the two capstans and in the pressure of the two pinch
rollers to maintain the desired tape tension. This makes speed
and tension adjustment complex and difficult. and increases
the tape tension. The relatively long distance between the two
capstans over which the tape must stretch contributes to
higher modulation noise and scrape flutter.

In contrast, the Technics single capstan system maintains
exactly the same speed and pinch roller pressure on both sides
or the capstan. The wrde contact area between the pinch
rollers and the single extra-large capstan allows for lower tape
tension. Tape tension is low (about 80 grams) and very steady,
partially because the tape path between the capstan and the
reversing roller is relatively short. So modulation noise. wow
and flutter, and level fluctuations are dramatically reduced.
Add to this the quartz locked slow-speed direct capstan drive
system (which is aided by tension controlled direct drive reel
motors and air-damped tension rollers). and it becomes
obvrous that the Teehnics isolated loop system achieves
enviable overall pertonnanee.

Air0damped // ' Double pinch
tension rollers .

,1 Reversing roller
with strobe
markings