Auto-Reverse Double-Mechanism Cassette Deck
Pure and wide-range sound from every recording
JVC has once again successfully mixed quality and purity in the TD-W7SD. Quality is assured with the fine amorphous head, Compu Calibration and gold-plated terminals - the means to provide purity. Flat response and wide range from every tape. The TD-W7SD's convenience is exemplified by the dual-deck design that offers among its many features, the continuous recording and playback of two tapes (both sides of both tapes) and simultaneous recording on two tapes (the same). Giving you the analog equivalent of wide range digital recordings - that's how we have built the TD-W7SD.
Compu Calibration - the computer controlled recording calibration system
JVC Compu Calibration lets you enjoy the best sound from each and every recording you make on any tape. Bias or equalization is adjusted in fine steps to ensure flat frequancy response, low distortion and extended high frequencies. The level is also adjusted finely to guarantee natural sound from a recording made with Dolby B/C NR. Conveniently, the last calibrated parameters are kept in memory for each type of tape (Normal, Chrome and metal) and for each of the double cassette decks. This means you can recall and use them over and over without recalibrating.
Fine amorphous head with pure PC-OCC wiring.
A great deal depends on the head design in determining the sound quality of a cassette deck. So in the TD-W7SD. JVC has developed the "fine amorphous" head that features superior high-frequency response (as an amorphous head does) and excellent magnetic and abrasion-resistant properties (as Senalloy head does). Moreover, the wiring in the head uses PC-OCC - copper of highest purity - to greatly reduce signal loss as well as improve purity. No wonder you enjoy pure, clean taped sound and extended response over long periods of time.
Reduced acoustic modulation noise
Vibrations, such as those set up by speakers and footsteps cause acoustic modulation noise and harm the purity of taped sound JVC has drastically cut this type of noise by using large insulators and a cassette-shell stablizer that firmly secures the mounted cassette.
Specifications
Type: Double cassette deck
Track System: 4-track, 2-channel
Heads: Amorphous head for record/playback, 2-gap ferrite head for erasure; combination head x 1 (for both decks A and B)
Motors (for both decks A nad B):
1 x Electric governed DC motor for capstan
1 x DC motor for reel
1 x DC motor for mechanism drive
Tape Speed:
Normal : 4,8 cm/sec (1-7/8 inch/sec)
High : 9,5 cm/sec (3-3/4 inch/sec)
Fast Forward/Rewind: approx. 110 sec with C-60 cassette
Frequency Response:
Type I Tape : 10 - 19,000 Hz (20 - 17,000 Hz ±3 dB)
Type iI Tape : 10 - 19,000 Hz (20 - 17,000 Hz ±3 dB)
Type IV Tape : 10 - 20,000 Hz (20 - 19,000 Hz ±3 dB)
Signal-to-Noise Ratio: 58 dB (S= 315 Hz, k3= 3%, N= A.WTD, Type IV tape)
The Signal-to-Noise is improved by about 15 dB at 500 Hz and by max. 20 dB at 1 kHz - 10 kHz with Dolby C NR on and improved by 5 dB at 1 kHz and by 10 dB at above 5 kHz with Dolby B NR on.
Improvement of MOL: 4 dB at 10 kHz with Dolby C NR on
Wow and Flutter: 0,08% (WRMS)
Channel Separation: 40 dB (1 kHz)
Crosstalk: 60 dB (1 kHz)
Total Harmonic Distortion: k3; 0,5% (Type IV tape, 315 Hz 0 VU)
Input Sensitivty/Impedance:
Line IN : 80 mV (0 VU)/ 50 k Ω
Mic : 0,4 mV (-68 dBV)/600 Ω - 10 k Ω
Output Level/Impedance:
Line Out : 300 mV (0VU)/5 k Ω
Phones : 0 - 1 mW/8 Ω (0VU) Matching Impedance 8 Ω - 1 k Ω
Power Requirements: AC 110, 120, 230 V 50/60 Hz
Power Consumption: 23 W ( 4,0 W standby)
Dimesnions (W x H x D): 435 x 134 x 331 mm (17-3/16" x 5-5/16" x 13-1/16")
Weight: 4,9 kg (10,9 lbs)
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