Pioneer RT-707
Pioneer RT-707 – трёхмоторный катушечный магнитофон с четырьмя головками. Был представлен в 1977 году и выпускался до 1981 года. Прочная и надёжная конструкция. Передняя панель толщиной 5 мм. Литой каркас для наружного корпуса и крепления тяжёлых внутренних деталей. Конструкция задумана с целью отображения максимальной прецизионности и долговечности. Передняя панель может монтироваться в стойку в соответствии с EIA стандартами.
Type: 4-track, 2-channel stereo tape deck (with reverse playback)
Operation system:
Solenoid drive, Pushbutton direct change system,
Timer can be set for recording and playback
Heads: 1 Recording Head; 1 Erase Heads; 1 Forward playback Head; 1 Reverse playback Head;
Motors:
Capstan drive motor 1 (FG-system, AC servo, direct drive)
Reel base drive motors: 2 (6-pole inner rotor induction type)
Acceptable Reel Size: 7in (17,8 cm)
Tape Speed: 1 9cm/s (7-l/2ips), 9.5cm/s (3-3/4ips) ±0.5%
Fast Forward/Rewind Times: Less than 100 sec. with 7-inch reel and 370m tape
Wow and Flutter:
19cm/s; less than 0.05% WRMS ±0.14% (DIN)
9.5cm/s; less than 0.08% WRMS ±0.18%(DIN)
Signal-to-Noise Ratio: More than 58dB (J IS, DIN)
Total Harmonic Distortion: Less than 1% (1 9cm/s)
Frequency Response:
19cm/s: 20Hz to 28,000Hz (30Hz to 24,000Hz ±3dB) (DIN)
9.5cm/s: 20Hz to 20,000Hz (30Hz to 16,000Hz ±3dB) (DIN)
Crosstalk: More than 50dB
Channel Separation: More than 50dB
Erasure Rate: More than 70dB
Recording Bias Frequency: 125 kHz
Equalization: NAB Standards
Inputs: (Sensitivity/Maximum allowable level/Input impedance):
MIC; 0.25mV/125mV/27k?, 6mm diam. jacks (suitable microphone, 250? to 30k?)
LINE; 50mV/25V/100k?, DIN; 16mV/8V/1.3k?, DIN standards
Outputs: (Reference level/Maximum level/Load impedance)
LINE; 450mV/700mV/50k?,
DIN; 450mV/700mV/50k?, DIN standards
Semiconductors:
67 transistors (4 FET's),
5 IC's, 47 diodes (1 thyristor, 2 LED's, 4 Zener diodes, 2 varistors,)
Power Requirements: AC 220, 240V (Switchable) 50/60Hz
Dimensions: 480x230x366 mm
Weight: 23.5kg