Technics presents a
stereo cassette deck with a rare combination; 3 major noise reduction systems,
and a low price. In addition to the RS-M231X's Dolby B and C noise reduction
circuitry is dbx, which doesn't just reduce background tape noise but eliminates
it. We've also furnished the RS-M231X with soft-touch transport keys, a metal
compatible MX head, and convenient
slider controls for input level and balance adjustment.
dbx, Dolby B and
Dolby C
The most effective
of the deck's noise reduction systems is dbx, which eliminates tape noise and
gives your tape the ability to reproduce up to a 110 dB difference in volume
levels (or dynamic range) of a live performance, dbx reduces noise by at least
30 dB, pushing tape hiss below audibility, and increases headroom by about 10
dB so the tape can accept loud music signals without distorting them. The
result is concert-like realism.
The RS-M231X is also
equipped with a dbx disc decoder, so you can experience the same
live-performance excitement from the ever-increasing number of dbx-encoded LPs
as you do from dbx-encoded tapes.
Dolby B, the noise
reduction system used in many cassette decks and prerecorded tapes, and Dolby
C, an improved version of Dolby B, both reduce tape noise, especially in the
high frequency range, where tape hiss is most noticeable.
Soft-Touch Controls
The soft-touch
controls, which require only a light touch to operate, boast an impressive
array of convenience features. Mechanical logic allows you to switch from fast
forward or rewind directly to play, without having to touch the
"stop" key. For recording, just touch the "record" key
instead of "record" and "play". And rewind auto-play begins
playback automatically after the tape rewinds to the beginning. The deck also
includes cue and review functions, and timer record/playback capability.
Input Level and
Balance Slider Controls
The deck's dual
slider system provides optimum precision in setting recording levels. For most
recording, the master input level slider suffices adjusting both the left and
right channels together. For such demanding situations as live recording, where
microphones are used, the balance slider adjusts left/right channel balance.
Metal Compatible MX
Head
Specially developed
for metal tape compatibility, Technics' MX head handles metal tape's high
signal and bias level requirements and provides smooth frequency response and
wide dynamic range. Of course, this improves the performance of normal and CrO₂
tapes as well.
Other Features:
DC servo motor
Automatic mic/line
input selector
Large illuminated
level meters
Timer
record/playback capability
Oil-damped cassette
well door removable for easy maintenance.
Specifications
Track System: 4-track,2-channel stereo recording and
playback
Tape Speed: 4,8 cm/s (1-7/8 ips)
Wow and
Flutter: 0,048% WRMS
Frequency Response
Metal Tape : 20 - 19,000 Hz; 50 - 17,000 Hz (±3 dB)
CrO₂ Tape : 20 - 18,000 Hz ; 50 - 16,000 Hz (±3 dB)
Normal Tape : 20 - 17,000 Hz ; 50 - 15,000 Hz (±3 dB)
Dynamic Range: 110 dB (at 1 kHz, CrO₂) with dbx in
Max. Input Level
Improvement: 10 dB or more with dbx in
(at 1 kHz)
Signal-to-Noise
Ratio
dbx In : 92 dB
Dolby C NR In : 75
dB (CCIR)
Dolby B NR In : 67
dB (CCIR)
NR Out : 57
dB
Fast Forward and
Rewind Time: approx. 90 sec. C-60 tape
Input
Sensitivity/Impedance:
Mic : 0,25 mV, applicable
mic. Impedance 400 Ω
- 10 k Ω
Line : 60 mV/more than 47 k Ω
Output
Level?Impedance:
Line : 400 mv/1,5 k Ω or less
Headphones : 80 mv (at 8 Ω ), applicable headphone impedance 8 Ω - 600 Ω
Bias Frequency: 80 kHz
Motor: DC servo motor
Heads: 2-head system
MX head for
record/playback
Double Gap Ferrite
Head for erasure
Power
Requirements: AC 120 V, 50/60 Hz
Power
Consumption: 16 W
Dimensions (W x H x
D): 430 x 109 x 235 mm (16-7/8" x
4-5/16" x 9-1/4")
Weight: 4,4 kg (9 lbs 11 oz)
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