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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





SAE TWO R12


The 120 watt per channel R12 receiver from SAE TWO
It shares all the basic performance and design characteristics of the R18 minus a few of the added conveniences. Like the R18 it offers wide and narrow IF band selection. (Wide for normal reception and narrow for weak signals or unusual reception conditions)
Also like the R18, the R12 features optional infrared remote control capability for convenient turn-on, volume, balance and tuning.
You're provided state-of the-art digital readout, flourescent bar graph displays and much more:
Synthesized Touch Tuning.
Quartz lock.
External processor Input.
Tape EQ.
Single Strata Voltage Amplifier.
Full Complementary Outputs.
Infrared remote Control (Optional).
Parametric EQ.
Low Noise Phono IC's.
Moving Coil Input.
Relay Speaker Protection.

Specifications (IHF-202A, 1978 STD.)

Power (into 8 ohm from 20 - 20,000 Hz): 120 watts
Total Harmonic Distortion (from 250 mW to full rated power is less than): 0.05%
Intermodulation Distortion (SMPTE STD< 250 mW to rated output, lesss than): 0.05%
Power Bandwidth (1 kHz, 0.1% THD, 8 ohms): 10 Hz - 60 Hz
Damping Factor (1 kHz, 8 ohms): >40
Frequency Response:
Phono MC: ±0.5 dB
Phono MM: ±05 dB
Aux, Tape, Ext Pros: ±0.5 dB (20 Hz - 20 kHz); +0.5/-3 dB (5 Hz - 100 kHz)
Signal to Noise Ratio (IHF-A):
Phono MC: 80 dB
Phono MM: 84 dB (5 mV, IHF load); 94 dB (10 mV, shorted)
Aux, Tape, Tun: 80 dB (1 watt output); 100 dB (rated output)
Residual Noise (IHF-A): 10 mV
Input Sensitivity (1W/ Rated Output/Impedance):
Phono MC: 0.01 mV/0.25 mV/500 ohms
Phono MM: 0.11 mV/2.5mV/47 kohms
Aux,Tape, Ext. Pros. Tuner: 6.7 mV/150 mV/50 kohms
Output Level - Tape Out, Ext. Pros: 150 mV
Maximum Input Level:
Phono MC: 12 mV
Phono MM: 150 -300 mV
Aux, Tape, Ext. Pros., Tuner: 4 V
Parametric EQ
Low:
Level: ±16 dB
Frequency: 20 Hz - 1.2 kHz
Bandwidth: 0.3 - 3.6 oct.
High:
Level: ±16 dB
Frequency: 1.2 kHz - 20 kHzz
Bandwidth: 0.3 - 3.6 oct.
Filter: 6 dB/octave at 30 Hz
Loudness Compensation (level -30 dB): =6 dB at 10 kHz, +8 dB at 100 Hz
Audio Muting: -20 dB
Volume Tracking Error (0 - 70 dB): ±1 dB
TUNER SECTION
Usable IHF Sensitivity:
Mono: 1,8/10,3 μV/dBf
Stereo: 4/17,3 μV/dBf
50 dB Quieting Sensitivity:
Mono: 4/17,3 μV/dBf
Stereo: 30/34,7 μV/dBf
Signal-to-Noise Ratio (IHF):
Mono: 76 dB
Stereo: 70 dB
Image Rejection Ratio: 85 dB
Spurious Response Ratio: 95 dB
IF Rejection Ratio: 95 dB
AM Suppression: 55 dB
Capture Ratio: 1,5 (W)/1,0 (N) dB
Alternate Channel Selectivity: 35 (W)/70 (N) dB
Harmonic Distortion Mono:
100 Hz : 0,09%
1 kHz : 0,08%
7,5 kHz : 0,22%
Harmonic Distortion Stereo:
100 Hz : 0,15%
1 kHz : 0,15%
7,5 kHz : 0,30%
Stereo Separator:
50 Hz : 46 (W)/38 (N)
1 kHz : 48 (W)/40 (N)
10 kHz : 40 (W)/36 (N)
Frequency Response: 30 -15 kHz, +0,5 dB -2 dB
Muting Sensitivity: 7 μV
Subcarrier Suppression: 65
Output Level: 150 μV
AM Section
Usable Sensitivity: 15 μV
Selectivity: 32 dB
Signal-to-Noise Ratio: 45 dB
Harmonic Distortion: 0,5 dB
Image Rejection Ratio: 45 dB
IF Rejection Ratio: 40 dB
Output level: 150 μV
Dimensions (W x H x D): 559 x 165 x 457 mm (22 x 6½ x 18 inch)
Weight: 21 kg (47 lbs)




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