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

Phase Linear Model 2000

 The Model 2000 Stereo pre-amplifier offers excellent specifications, outstanding sonic performance and a unique "Ambience Circuit" designed to retrieve out-of-phase signals while using the 2000 in a stereo mode. Prior to this time one had to add another amplifier and an additional set of speakers to utilize such a system, but this is not true of the ambience system in the 2000. When listening to a record played through the 2000 with the ambience circuit on, you will hear instruments that would not be audible on our preamps. The music is on the record out of phase and the 2000 corrects that problem

"In measurements made at CBS, the Model 2000 proved itself a strong performer. In neither channel did output clipping occur at less than 12,2 volts, whether driven singly or together. At an output level of 2 volts (more than enough for full output from most power amps), harmonic distortion was less than 0,02% in all cases - well below Phase Linear's 0,1% spec. And if we ignore as inaudible all harmonics above 20 kHz, harmonic distortion is  no more than 0,0066%"
"The Model 2000 is as super in the listening as it is smooth in the handling. Once one has become used to the controls, they are convenient to operate and satisfying to touch. The extra flexibility in the tone controls (the separate knobs for each channel, as well as the variable turnover points) delivers worthwhile options."

Total Harmonic Distortion:  Basically so low it is unmeasurable. Guaranteed less than 0,1% at rated output with 1 HF measurement.
Frequency Response:  Phono ±0.5 dB of RIAA Standard
Input Sensitivity: 
High level input : 40 K
Low level input : 47 K, 290 pf
Hum and Noise:  20 Hz - 20,000 Hz (inputs shorted)
High level : 88 dB belov 2 V
Low level : 74 dB a 10 mV input
Ambience Signal:  (L-R) =L & (R-L)=R
Volume Control Tracking:  Less than 1 dB Tracking error
Low level (Phono) to pre-amp output : 56 dB at 1 kHz
Phono to Tape Output : 41 dB at 1 kHz
High Level to Pre-amp output : 15 dB at 1 kHz
Maximum Output Levels:  Rated at 2 V : maximum 10 volts will source a 5 kohm load
Turnover frequency 50 Hz : ±11 dB at 20 Hz
Turnover frequency 150 Hz : ±13 dB at 20 Hz
Turnover frequency 5 kHz : ±10 dB at 20 kHz
Turnover frequency 2 kHz : ±14 dB at 20 kHz
Dimensions:  5½" (H) x 19" x 6" (D)
Weight: 15 lb

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