Technics RS-B665
Quartz Direct Drive Stereo Cassette Deck
the RS-B665 direct drive cassette deck clarifies the Technics technological lead in this realm. The motor uses an improved planar opposed design for its amazingly high torque while individual balancing of each flywheel prevents torque ripple. For precise servo control, the RS-B665 digitally compares the motor’s FG pulse to a quartz reference frequency. This direct comparison greatly improves rotational precision. So musical details come through in their original pure state.
2-Motor Tape Transport
A division of labor results in greater reliability of the tape transport mechanism. The high-torque DD motor drives the critical capstan, while a second motor drives the supply and take-up reels. Microprocessor full-logic control coordinates motor activity for smoothly integrated task performance.
Linear Magne-Field Class AA Circuit
Located after the recording amp. The Linear Magne-Field Class AA circuit overcomes the typical non-linearity occurring during electromagnetic transduction in the tape heads. The key is a refinement of the Technics Class AA circuit technique which prevents phase shift and avoids loss of mid-to-high frequency gain caused by head-coil inductance.
Dolby HX pro
HX Pro extends the headroom of virtually any tape, allowing it to record more high frequency information without overloading and causing distortion.
PXS Capacitors
Developed specially for improved sound quality. PXS capacitors are employed in various locations in the deck circuitry, including the power supply. This new technology helps preserve the fidelity of the original audio signal
Bias Fine Adjustment
You can “fine tune” the recording bias to maximize performance of your favorite tape formulations (Normal, cro2)
APRS (Advanced Precise Rec Level System)
Now APRS simplifies location of the ideal recording level. Since the meters hold the highest peak reached in your source program, you simply adjust the rec-level knob until the meters indicate the optimum setting. Great for use with the peak level search function in Technics CD players.
Dual-Range Peak-Hold Meters
For fine adjustments of recording level you can switch the meter range so that it indicates a range from -7 dB to +8 dB in 1 dB steps (instead of the usual -30 dB to +16 dB )
Linear Electronic Counter with memory Stop/Repeat
This 4-digit display shows elapsed tape time in minutes and seconds. Or you can switch it to work as a 3-digit counter. In whichever counter mode, you can have the tape stop automatically at the “00:00” or “000” position. Repeated play is also possible
More Valuable Features
microprocessor-controlled feather-touch operation
Phase Compensation Circuitry (PCC) in playback amp.
Dolby B-C NR systems
MPX filter on/off switch
Non-resonant TNRC base
Large insulating feet
Specifications
Deck System: Stereo cassette deck
Track System: 4-track, 2-channel
Heads
Rec/Play : Permalloy head
Erasure : Double-gap ferrite head
Motors
Capstan Drive : Quartz direct drive DC motor
Reel Table Drive : DC motor
Recording System: AC Bias
Bias Frequency: 80 kHz
Erasing System: AC erase
Tape Speed: 4,8 cm/sec (1-7/8 ips)
Frequency Response:
Normal : 30 Hz – 16 kHz (± 3 dB ) [20 Hz – 16 kHz (DIN)]
CrO₂ : 30 Hz – 16 kHz (± 3 dB ) [20 Hz – 17 kHz (DIN)]
Metal : 30 Hz – 18 kHz (± 3 db) [20 Hz – 18 kHz (DIN)]
Signal-to-Noise-Ratio: (signal level=max recording level, CrO₂ type tape)
Dolby C NR On : 74 dB (CCIR)
Dolby B NR On : 66 dB (CCIR)
Dolby NR Off : 56 dB (A weighted)
Wow and Flutter: 0,05% (WRMS) ± 01,15% (DIN)
Fast Forward and Rewind Time: appox. 90 sec C-60 tape
Input Sensitivity/Impedance:
MIC : 0,25 mV/400 Ω -10 k Ω
Line-IN : 60 mV/47 k Ω
Output Voltage/Impedance
Line Out : 400 mV/800 Ω
Headphones : 125 mV/8 Ω
General
Power Consumption: 21 W
Power Supply: AC 50/60 Hz , 240 V
Dimensions (W x H x D): 430 x 135 x 290 mm
Weight: 4,9 kg (10,8 lb)
