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





Centrex by Pioneer RH-60 8-track


8-track home stereo recording deck
Recording or playback, a new adventure in 8-track with fast-forward and "One-All_Endless" function.
Now, you can create your own musical universe in 8-track. With the RH-60, part of the new Centrex line of home stereo systems and equipment by Pioneer, this elegantly crafted unit records as easily and superbly as it plays back.
Hard-to-beat features for perfect recording and perfect playback.
Simplified tape indexing
The RH-60's fast-forward button and program end indicator lamp work with one another to make tape indexing, which is crucial for precise recording, easier than ever. Just insert the cartridge, press fast-forward, and the lamp will light up-with the tape stopping automatically - to indicate that the tape has been properly indexed.

Recording level adjustment knobs
Accurately marked for both left and right channels, these enable you to adjust the recording level to the input. No guesswork you see everything on the corresponding level meters.

Large recording/playback level meters
For at-a-glance cheks of input level when recording, output level when playing back. Precisely calibrated from  -20 dB to +3 dB.

Automatic power switch on/off
When the cartridge is inserted, power automatically goes on; when the cartridge is pulled back, the power is switched off.

Fast-forward and pause buttons
Features normally found in higher-priced decks, these make recording or playback operations more convenient.

Versatile function selector
Press "One" to record or play back just one program, "All" for continuous Program 1-4 recording or playback and "Endless" for non-stop, repeat operation.

Light-up indicators
The RH-60 will never leave you in the dark. There's tape program indicator to tell you at a glance which program is in play, a program and indicator and a recording indicator. They make recording and playback easy, sit-back-and-enjoy-it affairs.

Specifications
Tape:  any 8-track cartridge
Tape Speed:  9,5 cm/sec (3-3/4 ips)
Wow and Flutter:  no more than 0,15% (WRMS)
Fast-Forward Time:  approx. 2 x normal speed
Frequency Response:  70 - 13,000 Hz
Crosstalk:  more than 45 dB
Signal-to-Noise Ratio:  more than 45 dB
Input Level:
Mic :  0,85 mV (typical)
Line :  85 mV (typical)
Input Impedance:
Mic :  36 k
Line :  100 k
Output Level/Impedance: 
Line :  580 mV/less than 200  
Erasing Ratio:  more than 50 db
Semiconductors:  13 Transistors; 19 Diodes; 1 Thyristor
Controls Provided:  "One-All_Endless" function switch, recording level, REC, fast forward, pause and program selector
Power Source:  AC 120 V 50/60 Hz
Power Consumption:  less than 25 watts
Dimensions (W x H x D):  375 x 115 x 275 mm (14-3/4" x 4-1/2" x 10-7/8")
Weight:  5,5 kg (12 lb 3 oz)


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Rotel RA-930AX amplifier


Rotel Stereo Integrated Amplifier RA-930AX

Specifications
Continuous Power Output:  30 wattts per channel, min. RMS both channels driven into 8 ohms from 20 to 20,000 Hz with no more than 0,03% Total Harmonic Distortion
DIN Output:  50 watts per channel (1 kHz, 4 , 1 % Total Harmonic Distortion)
Music Power:  110 watts
Total Harmonic Distortion (20 to 20,000 Hz from Aux): 
Continuous Rated Power Output :  no more than 0,03%
Continuous 1/2 Rated Power Output :  no more than 0,03%
1 watt per Channel Power Output, 8  :  no more than 0,03%
Intermodulation Distortion (60 Hz : 7 kh = 4 : 1)
Continuous Rated Power Output :  no more than 0,03%
Continuous 1/2 Rated Power Output :  no more than 0,03%
1 watt per Channel Power Output, 8  :  no more than 0,03%
Output IMpedance
Speaker :  4  minimum
Headphone :  8 - 2,000
Damping Factor:  180 (20 to 20,000 Hz, 8 )
Input Sensitivity/Impedance: 
Phono :  2,5 mV/47 k
CD, Tuner :  150 mV/20 k
Tape, Aux : 150 mV/20 k
Overload Level (T.H.D. 0,5%, 1 kHz)
Phono :  180 mV
CD, Tuner :  5 V
Tape, Aux ;  5 V
Frequency Response
Phono :  20 to 15,000 Hz ±0,3 dB (RIAA Std)
CD,Tuner :  10 to 40,000 Hz ±1 dB
Tape, Aux :  10 to 40,000 Hz ±1 dB
Tone Control
Bass :  ±6,0 dB at 100 Hz
Treble :  ±6,0 dB at 10 kHz
Signal-to-Noise Ratio (IHF, A Network)
Phono :  80 dB
CD, Tuner, Tape, Aux : 100 dB
Miscellaneous
Power Requirement:  120 V, 220 V, 240 V;  50/60 Hz
Power Consumption:  180 watts
Dimensions (W x H x D):  440 x 92 x 304 mm (17-3/8" x 3-5/8" x 12")
Weight:  5,9 kg (13,0 lbs)


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Rotel RT-930AX tuner


Rotel AM/FM Stereo Tuner RT-930AX
Specifications
FM Tuner Section
Usable Sensitivity:  12,8 dBf/1,2 µV (75 )
50 dB Quieting Sensitivity:
Mono :  17,2 dBf/2 µV (75 )
Stereo :  40,7 dBf/30 µV (75 )
Signal-to-Noise Ratio (at 65 dBf):
Mono :  75 dB
Stereo :  70 dB
Total Harmonic Distortion (at 65 dBf)
Mono (1 kHz) : 0,08%
Stereo (1 kHz) :  0,3%
Frequency Response: 30 to 15,000 Hz ±1,5 dB
Capture ratio:  1,5 dB
Alternate Channel Selectivity:  63 dB (±400 kHz)
Spurious Response Ratio:  95 dB
Image Response Ratio:  65 dB
IF Response Ratio:  90 dB
AM Suppresion Ratio:  60 dB
Stereo Separation:
100 Hz / 1 kHz / 10 kHz :  35 dB / 40 dB / 30 dB
Subcarrier Product Ratio:  60 dB
SCA Rejection Ratio:  70 dB
Output Level :  720 mV
Antenna Input:  75  unbalanced
AM Tuner Section
Sensitivity
AM :  350 µV/m
LW :  750 µV/m
Selectivity
MW :  27 dB
LW :  25 dB
Signal-to-Noise Ratio
MW :  55 dB
LW :  55 dB
Image Response Ratio
MW :  40 dB
LW :  40 dB
IF Response Ratio
MW :  60 dB
LW :  60 dB
Antenna:  Loop Antenna
Miscellaneous
Power Requirement:  120 V, 220 V, 240 V; 50/60 Hz
Power Consumption:  10 watts
Dimensions (W x H x D):  440 x 72 x 257 mm (17-3/8" x 2-7/8" x 10-1/8")
Weight:  3,2 kg (7,04 lbs)


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Philips F7112 turntable



Philips Synchro Drive Automatic Turntable


Specifications
Type:  Automatic-return belt drive type
Turntable Speeds:  33-⅓ and 45 rpm
Wow and Flutter: 
DIN :  less than 0,1 %
WRMS :  less than 0,05 %
Rumble:
Din A :  lower than -40 dB
DIN B :  lower than -60 dB
Tracking Error:  smaller than 0°9' / cm
Stylus Force:  adjustable from 1 - 3 gf (10 to 30 mN)
Mains Voltage/Frequency:  110 - 120 V 220 - 240 V, 50/60 Hz
Power Consumption:  max. 4 W
Dimenisons (W x H x D): 420 x 120 x 362 mm (cover closed)
Weight:  3,2 kg


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