Dokorder
Dokorder 7100 Three motor, Three head Reel to reel
Unit is used is good physical condition with minor blemishes due to age and use.
It has been recently serviced and is in full working condition.
General Description
A three-head, quarter-track stereo tape deck with three motors (one 2-speed 4-pole/8-pole hysteresis synchronous capstan drive and two 6-pole induction reel motors). Reels up to 7″ could be accommodated and transport operation was via electronic solenoid push-button controls.
Features included automatic tape lifters. automatic shut-off. echo and sound-on-sound. tape selector switch for different types of tape and tape/source monitor switch.
Additional Info
Year 1974
Price when new (in the USA) $400
Track system Quarter-track stereo
Heads Three: erase, record playback
Motors hysteresis synchronous 2-speed capstan drive two 6-pole induction reel motors
Maximum reel size 7″
Tape speeds 3¾ and 7½ ips
Frequency response ( 3dB) 40Hz – 21kHz at 7½ ips, 40Hz – 12kHz at 3¾ ips
Wow & flutter 0.08% at 7½ ips; max 0.12% at 3¾ ips
Signal to noise ratio 55dB at 7½ ips
Crosstalk 55dB at 7½ ips
Bias frequency 130kHz
Rewind speed 95 seconds for 1800ft at 60 Hz
Inputs
Microphone: sensitivity 0.8mV impedance 10 Kohms
Line: sensitivity 80mV impedance 220 Kohms
DIN: sensitivity 0.5mV impedance 3.3 Kohms
Outputs
Line: output level 0 dB (0.775mV) impedance 10 Kohms
Headphones: output level 5mV impedance 8 ohms
DIN: output level 0 dB impedance 10 Kohms
