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Last Edited:
12-Sep-2004

 
What Basic Tube Audio Circuits Are In your Vintage H.H. Scott Component?

Understanding the commonality of basic tube circuits is helpful when restoring or troubleshooting your H.H. Scott tube component. H.H. Scott products shared a common design heritage and philosophy.

If you can not get a schematic for your particular model, it is often useful to study a model or type that shared very similar circuitry -- "your mileage may vary." 

click on the links below to view representative schematic examples

Pre Amps (100-series)

Power Supply 
(some early models shared common power supply via octal connector from companion power amp)
Pre Amplifier (Phono, Tone Equalization, AF Preamp output
and if equipped,  "DYNAURAL" Noise Suppressor)
AF preamp output

Integrated Amps (200-series)

Power Supply
Pre Amplifier (Phono and Tone Equalization,
and if equipped,  "DYNAURAL" Noise Suppressor)
Power Amplifier (Phase Inverter and Final Push-Pull Output)

Basic (Power) Amps (200-series)

Power Supply
Input AF Amplifier
Power Amplifier (Phase Inverter and Final Push-Pull Output)

Tuners (300-series)

Power Supply
AM and/or FM RF front end 
AM and/or FM IF section
FM MPX stereo decoder
AF preamp output

Receivers (300-series)

Power Supply
AM and/or FM RF front end
AM and/or FM IF section
FM MPX stereo decoder
Pre Amplifier (Phono and Tone Equalization)
Power Amplifier (Phase Inverter and Final Push-Pull Output)
 
 

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