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

Kenwood TK-55

 Solid State FM-Multiplex Stereo Receiver
Model TK-55, 60 watts music power Fm Stereo Receiver with silicon transistor amplifier, kenwood's precision engineered component encompassing the fine detailing of quality craftsmanship at a surprisingly modest price.

Special Features Tuner Section
4-gang Tuning Condenser All Transistor Front-end , provides superior sensitivity.
5-IF Stages with 4 Limiters and Wide-band Ratio Detector, provide 45 dB alternate channel selectivity and freedom from noise and interference.
Automatic FM Stereo/Mono Mode Silent Switching Circuit with Stereo Light Indicator.
4 diodes Time Division Multiplex Decoder for 38 dB stereo separation.
Illuminated Pinpoint FM Tuning Meter
Special Features Amplifier Section
60 watt IHF standard total music power
All Silicon Transistor Amplifier, provides wide 20 to 50,000 Hz frequency response and 20 to 20,000 Hz power bandwidth
High Damping Factor
Very low Im distortion for exceptional, clear low level to high level listening
Blow-out free exclusive, Automatic Circuit Breaker protects Power Transistor (U.S. pat.)
3-position Program Source Selector permits FM Auto, Phono, Aux
Direct Tape Monitor Switch for tape monitoring without changing cable connector.
Mode switch for Stereo and Mono listening
Volume control with Rocker Switch for loudness control
Bass and treble controls may be used to regulate each channel simultaneously
4 pairs of Input Terminals for Mag, Aux, Tape Rec, Tape Play
Front panel Stereo Phone jack
Center channel Low Level Output for monaural amplifier and speaker.
Noise Filter Switch inserts a filter into the circuit and effectively reduces the high-frequency noise
4-sets of Output Speaker Terminals (2 sets of stereo speakers) and Front Panel Speaker Selector Switch (A speakers, B speakers, A+B speakers, headphones)

Handsome simulated walnut finish cabinet

Tuner Section
FM Usable Sensitivity:  2,5 microvolts (IHF)
FM Signal-to-Noise Ratio:  60 dB
FM Selectivity (Alt. channel):  45 dB
FM Harmonic Distortion:  0,6%
FM Image Rejection:  60 dB
FM Cross Modulation Rejection:  80 dB
FM Capture Ratio:  2,5 dB
FM Stereo Separation:  38 dB (at 400 Hz)
FM Interstation Muting:  No
FM Stereo/Mono Auto Switching:  Yes
FM IF Stages:  5 stages
Amplifier Section
Total Music Power:  60 watts at 4 Ω
IHF Standard:  50 watts at 8 Ω
RMS Power (1 kHz, 0,8% THD):   20/20 watts (at 8 Ω)
IM Distortion (at -3 dB rated output):  0,3%
Frequency Response:  20 - 50,000 Hz (±2 dB)
Power Bandwidth (0,5% THD, -3 dB):  20 - 30,000 Hz
Signal-to-Noise Ratio: 
Aux :  70 dB
Mag :  60 dB
Damping Factor:  46 at 16 Ω;  23 at 8 Ω
Bass Control (at 50 Hz):  ±10 dB
Treble Control (at 10 kHz):  ±10 dB
Input Sensitivity:
Mag :  2 mV
Aux :  150 mV
Tape :  2 mV
Dimensions (W x H x D):  16 ½ " x 5' x 12 ¼"
Weight:  20 lbs

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