ขายเครื่องเล่นเทปรีล ReVox B77 สภาพสวย เสียงดี Made in Switzerland
ขายเครื่องเล่นเทปรีล ReVox B77 สภาพสวย เสียงดี Made in Switzerland
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Revox B77
3 Motor 2 Speed Stereo Reel to Reel Tape Recorder (1978-85)
DESCRIPTION
Studer-Revox manufactured their own capstan and motors. These motors were electronically
controlled and are given higher starting voltage slowly reducing to regular voltage for fast
starts and smooth tape handling.
The capstan motor employs a precision-machined set of teeth at the circumference of its motor.
As the motor turns, these teeth create a series of pulses that are read by a tachometer head
and whose rate is compared against the frequency of a stable internal oscillator. In this way,
even very slightest speed variations are immediately detected through a fast-acting servo
system. To reduce wow and flutter even further, the direct-drive capstan shaft is machined to
an accuracy of one one-thousandth of a millimeter, is hard chrome-plated and is artificially
aged during the manufacturing process to ensure long-term stability. A 4th head could be
added for audio-video control or slide-projector synchronization.
The Mk II version is the same as the Mk I except it adds a speed adjustment knob under
the built-in editing block.
Revox B77
Specifications
Track system: stereo system
Motor: 2 x reel, 1 x capstan
Reel size: up to 10.5 inch reel
Tape speeds: 3 3⁄4 7 1⁄2 ips
Wow and flutter: 0.08% (7 1⁄2 ips)
Frequency response: 30Hz to 20kHz (7 1⁄2 ips)
Signal to Noise Ratio: 67dB
Total harmonic distortion: 0.5%
Input: 40mV (line), 0.15mV (mic)
Output: 1.55V (line)
Semiconductors: 11 x IC, 1 x opto-coupler, 4 x triacs, 60 x transistors, 33 x diodes, 5 x LED,
2 x full wave rectifi
Dimensions: 563 x 475.5 x 233mm
Weight: 17kg.
ได้รับการโหวต ความน่าเชื่อถือในการซื้อ-ขายสินค้า จากสมาชิกทั้งหมด 17 ท่าน