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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Dokorder 7100


 The 7100 represents a milestone in tape sophistication at a popular price. A glance at the deck's specifications will attest to the 7100's excellence of performance. And a review of the various warranties exhibit Dokorder's confidence in its reliability. If service should be required in future years, you will soon appreciate the ease of maintanance. All electronic circuits are modular and repair is quickly accomplished by complete replacement of electronic circuit modules, saving you time and expense.


 Features:
MBD Heads
Electronic Tape Transport Control
Three precision Motors
Tape/Source Monitoring
Adjustable Tape Equalizer
"Live" Editing
Special Electronic Effects
Automatic Shutoff
Four-Channel Playback Conversion
New, Easy-Load tape Design



Specifications
Tape Transport:  Three motor (Hysteresis synchronous capstan and eddy current induction reel) mechanical speed change solenoid operated.
Tape Speeds: 7½ IPS and 3¾ IPS
Monitoring:  Full tape/source monitoring
Tape Heads:  Three stereo channel separate heads (E, R and P)
Equalization:  NAB
Frequency Response: 
at 7½ ips: 25 Hz - 25 kHz (±3 dB, 30 Hz - 23 kHz)
at 3¾ ips: 30 Hz - 18 kHz (±3 dB, 30 Hz - 13 kHz)
Signal-to Noise Ratio:  Better than 58 dB IPS
Crosstalk:  Better than 60 dB
Wow and Flutter: 
at 7½ ips: 0,08% IPS
at 3¾ ips: 0,12% IPS
Stereo Channel Separation:  Better than 55 dB at 1 kHz
Bias Frequency:  130 kHz
Inputs Per Channel: 
MIC : 0,8 mV/10 kΩ
LINE : 80 mV/100 kΩ
DIN (Rec) : 3,3 kΩ
Outputs per Channel:
LINE : 0 dB (0,775 V)/10 kΩ
DIN (Pb) : 0 dB/10 kΩ
Headphone : 5 mW/8 Ω
Circuit Complements:  21 transistors, 41 diodes
Fast Winding Time:  96 seconds (1800-foot/60 Hz)
Reel Size:  7" and 5"
Operating Position:  Vertical
Power Requirements:  AC 112 V, 60 Hz
Power Consumptions:  120 W
Dimensions:  16-7/8" x 17-3/4" x 6-3/4" (W x H x D)
Weight:  40 lbs (net)

2 commenti:

  1. E UN BUON REGISTRATORE A BOBINE NE POSSEGGO UNO E FUNZIONA BENE E DI FACILE MANUTENZIONE E LA RESA E OTTIMA UN PEZZO UNICO E RARO VE LO CONSIGLIO

    RispondiElimina
  2. what's the difference a 7100 and 7140 ? I have a 7140 I bought in1979 It had reverb effects on channel 1 and 2 has been good, but about to give out now.I need another one

    RispondiElimina