Specifications - Yamaha KX-690 Owner's Manual

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.
Recordings cannot be made with
TIMER REC (deck only plays back).
The remote control transmitter cannot
be operated.
Track Configuration .................. 4 track, 2 channel stereo
Motor .......................................... DC servo motor (capstan)
Head ......................... Recording/playback: hard permalloy
Rapid Transport ........................................... 95 sec. (C-60)
Wow and Flutter
WRMS .................................................................... 0.04%
W.Peak ................................................................ ±0.07%
Signal-to-Noise Ratio
Dolby NR off ......................................................... 60 dB
Dolby B NR on ...................................................... 68 dB
Dolby C NR on ...................................................... 76 dB
Dolby S NR on ...................................................... 80 dB
Frequency Response
Normal tape (–20 dB) ................ 20 ~ 18,000 Hz ±3 dB
CrO tape (–20 dB) .................... 20 ~ 19,000 Hz ±3 dB
2
Metal tape (–20 dB) ................... 20 ~ 21,000 Hz ±3 dB
Harmonic Distortion .................................................... 0.8%
Input Sensitivity/Impedance
Line ................................................... 100 mV/43 k-ohms
Output Level
Line ..................................................... 570 mV/2 k-ohms
Phones ................................................... 1.5 mW/8 ohms
Channel Separation (1 kHz) ..................................... 45 dB
Cross Talk (125 Hz) .................................................. 55 dB
20
÷ Normally-recorded tape is played back in
Dolby NR.
÷ Heads are dirty.
÷ Heads are magnetized.
÷ Basic levels are different for different
cassette decks.
÷ Protective tabs on cassette have been
broken off.
÷ The batteries are exhausted.
÷ The remote control transmitter is operated
from an incorrect distance or angle.
÷ The remote control sensor is lighted
strongly.

SPECIFICATIONS

DC motor (reel)
DC motor (asist)
Erase: double-gap Ferrite head
Cause
÷ Playback in OFF position.
÷ Clean heads and carry out demagnetiza-
÷ This is not a fault.
÷ Replace cassette tape, or cover tab
÷ Replace batteries.
÷ Operate it from less than 7 meters (about
÷ Place the unit away from the strong light.
GENERAL
Power Supplies
U.S.A. and Canada model ........................ 120 V, 60 Hz
Europe model ............................................ 230 V, 50 Hz
U.K. model and Australia model ............. 240 V, 50 Hz
General model ................ 110/120/220/240 V, 50/60 Hz
Power Consumption .................................................. 20 W
Dimensions (W x H x D) ................. 435 x 126 x 279.5 mm
Weight .......................................................... 5.0 kg (11 lbs.)
Accessories
Output/input cord ................................................. 1 pair
* Specifications subject to change without notice.
Cure
tion with head demagnetizer.
holes with tape, etc.
23 ft.) and 30°.
(17-1/8" x 4-15/16" x 11")