Specifications - Yamaha KX-W421 Owner's Manual

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Fault
Playback sound is muffled and high
frequencies are inaudible.
When playing back tapes recorded on
other decks, meter deflections are
greater (smaller) than when recorded.
The remote control transmitter cannot
be operated.
Type ..................................... Auto reverse 4-track, 2-channel
recording and playback stereo double cassette deck
Motors ......................................... DC servo motor x 2 (main)
Heads .................... Recording/playback: Hard Permalloy x 1
Rapid Transport .......................................... 100 sec. (C-60)
Wow and Flutter
WRMS ...................................................................... 0.08%
W.Peak ................................................................... ±0.15%
Signal-to-Noise Ratio
(Dolby NR off) ........................................................... 58 dB
(Dolby B NR on) ....................................................... 66 dB
(Dolby C NR on) ....................................................... 74 dB
Frequency Response (–20 dB)
<KX-W421>
Type I/Normal .............................. 20 ~ 17,000 Hz ±3 dB
Type II/High (CrO
) .................... 20 ~ 18,000 Hz ±3 dB
2
Type IV/Metal .............................. 20 ~ 20,000 Hz ±3 dB
<KX-W321>
Type I/Normal .............................. 20 ~ 16,000 Hz ±3 dB
Type II/High (CrO
) .................... 20 ~ 17,000 Hz ±3 dB
2
Type IV/Metal .............................. 20 ~ 19,000 Hz ±3 dB
Harmonic Distortion
KX-W421 .................................................... less than 0.8%
KX-W321 .................................................... less than 1.0%
Input Sensitivity/Impedance
Line ...................................................... 100 mV/43 k-ohms
Output Level
Line ..................................................... 570 mV/1.4 k-ohms
Phones ..................................................... 0.25 mV/8 ohms
Channel Separation (1 kHz) ...................... more than 40 dB
Crosstalk (125 Hz) ..................................... more than 55 dB
16
÷ Normally-recorded tape is played back in
Dolby NR.
÷ Heads are dirty.
÷ Heads are magnetized.
÷ Basic levels are different for different
cassette decks.
÷ The batteries are exhausted.
÷ The remote control transmitter is
operated from an incorrect distance or
angle.
÷ The remote control sensor is lighted
strongly.

SPECIFICATIONS

Erase: Double-gap Ferrite x 1
Playback: Hard Permalloy x 1
Cause
GENERAL
Power Supply
U.S.A. and Canada model ........................... 120 V, 60 Hz
Europe and U.K. model ............................... 230 V, 50 Hz
Australia model ............................................ 240 V, 50 Hz
General and China model . 110/120/220/240 V, 50/60 Hz
Power Consumption
KX-W421 ............................................ 14 W/7 W (Standby)
KX-W321
U.S.A. and Canada model ............. 11 W/7 W (Standby)
Other models ................................. 12 W/7 W (Standby)
Dimensions (W x H x D) ...................... 435 x 146 x 279 mm
Weight ........................................................... 5.0 kg (11 lbs.)
Accessory
Audio cord ................................................................ 1 pair
* Specifications subject to change without notice.
Cure
÷ Play back in OFF position.
÷ Clean heads and carry out
demagnetization with head
demagnetizer.
÷ This is not a fault.
÷ Replace batteries.
÷ Operate it from less than 7 meters
(about 23 ft.) and 30°.
÷ Place the unit away from the strong
light.
(17-1/8" x 5-3/4" x 11")

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