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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





Pioneer RT-1011L reel-to-reel deck

Pioneer RT-1011L
Pioneer's engineering policy assures reliable operation and quality performance from the new RT-1011L 4-track stereo tape deck.
A thick 5 mm front suspension panel and solid,  die-cast framework provide extra strength margin for the 10-1/2 inch reel load and stable tape transport system.
Wow and flutter is reduced by the precision 4/8-pole hysteresis synchronous capstan drive motor, coupled with a "tuned" 100 mm flywheel and high-precision 0,2 µ-error capstan.
A high-torque 6-pole induction motor ensures optimum tape tension. The 2-channel 4-track recording and playback heads are hyperbolic for superb tonal quality, ideal head-to-tape contact, and exhibit excellent
electromagnetic characteristics. All three heads are arranged in a short tape path to enhance stability. And Pioneer's long experience in tape deck design means top versatility. the RT-1011L includes
switched circuits for 2-step bias and 2-step equalization for balanced recordings with any tape. Advanced design and electronics also means wide dynamic range from the mic/line mixing, solenoid-operated
direct-changeable function  buttons, auto record facility for use with pre-set timer. large level meters, lockable pause, and more.
Specifications:
Operation:  3-motor, 3-head system, 4-track 2-channel recording, 4-track 2-channel playback
Heads: 
1 x playback head
1 x recording head
1 x erase head
Motors:
2 x For Reel :  6-pole iner rotor induction motor
1 x For Capstan :  4/8-pole hysteresis synchronous motor
Tape Speeds:  19 cm/s (7-1/2 ips); 9,5 cm/s (3-3/4 ips)
High Speed Wind Times:
10-1/2" Reel :  110 sec at 740 m (2400 feet) tape
7" Reel :  90 sec at 370 m (1200 feet) tape
Wow and Flutter:
19 cm/s :  0,08% WRMS
9,5 cm/s :  0,10% WRMS
Signal-to-Noise Ratio:  more than 55 dB
Distortion:  less than 55 dB
Frequency Response:
19 cm/s :  40 Hz to 20,000 Hz (±3 dB)
9,5 cm/s :  40 Hz to 12,000 Hz (±3 dB)
Crosstalk:  more than 60 dB
Stereo Channel Separation:  more than 50 dB
Erase Ratio:  more than 60 dB
Recording Bias Frequemcy:  125 kHz
Inputs Sensitivity/Impedance:
Microphone :  0,25 - 80 mV/ 20 k   (1 mV ref.)
Line :  50 mV - 25 V/ 100 k   (316 mV ref.)
DIN :  15 mV - 1,5 V/ 1,5 k  
Outputs :
Line :  316 mV/50 k  load at 0 VU (Output impedance less than 10 )
DIN :  316 mV/50 k  load at 0 VU (Output impedance less than 10 )
Headphone :  40 mV/ 8   at 0 VU (Load Impedance 4 to 16 )
Power Requirements:  AC 120 V 60 Hz
Power Consumption:  115 W
Dimensions (W x H x D):  428 x 431 x 227 mm (16-27/32" x 17" x 8-15/16")
Weight:  18,6 kg (41 lbs)