AIWA AD-6900U

Technic details

Specifications

Type:	Stereo Cassette Deck with built-in FRTS (Flat Response Tuning System)
Track System:	4-track, 2-channel
Tape Type:	Normal CrO2 FeCr
Motors:	For Capstan drive - 38 pulse FG servomotor x 1 For Reel drive-DC servomotor x 1

Heads:	Combination Recording / Playback V-cut ferrite head x 1 Erasure double cap ferrite head x 1
Frequency Response:	20Hz to 16kHz (Normal tape) 25Hz to 14kHz, +2 -3dB (Normal tape) 20Hz to 19kHz (CrO2 tape) 25Hz to 17kHz, +2 -3dB (CrO2 tape) 20Hz to 20kHz (FeCr tape) 25Hz to 18kHz, +2 -3dB (FeCr tape)
Noise Reduction:	Dolby B
S / N Ratio:	68dB (FeCr, Dolby On)
Distortion:	0.9% (FeCr, 400Hz)
Wow and Flutter:	0.04% (WRMS)
Tape Speed:	4.8 cm / sec.
Fast Forward Time:	65 sec. (C-60 Cassette tape) 120 sec. (Cue, C-60 Cassette tape)
Rewind Time:	65 sec. (C-60 Cassette tape) 120 sec. (Review, C-60 Cassette tape)
Recording System:	AC bias (105kHz frequency)
Erasure System:	AC erasure
Input Sensitivity / Impedance:	Max. 0.25mV / 200Ω - 10kΩ matched (MIC) Max. 75mV / Over 50kΩ (Line)
Output Level / Impedance:	0.41V (0 VU) / Over 50kΩ (Line) 8Ω - 150Ω (Headphones)
Semiconductors Used:	IC’s x 13 Transistors x 150 Diodes x 85 FET’s x 12 LED’s x 6
Accessories:	Stereo pin cords x 2 Head cleaning stick Screwdriver