National Horizon 20 User Manual Download

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Summary of Contents for Horizon 20

Page 1: ...pling has the additional advantage of requiring a TWENTY WATT AMPLIFIER far lower impedance ratio between the output tubes and the load with attendant reduction in leakage in ductance and increased po...

Page 2: ...nation part of a custom installation refer to the paragraph on Cabinet Installation ELECTRICAL CONNECTIONS All the input and output connections of the Horizon 20 amplifier are located on the back drop...

Page 3: ...for either the 10 mv or 30 mv type of cart ridge See instruction manual supplied with the Horizon 5 preamp SPEAKER OUTPUT AND 117V 3A OUTLET The instructions given in paragraph 1 also apply when the...

Page 4: ...FRONT PANEL OF CABINET BRACKET NOTE FELT FEET DIMENSIONS OF OPENING IN FRONT PANEL 14 X 4 Figure 2 Custom Cabinet Installation 4...

Page 5: ...amplifier is enclosed in a ventilated protective metal dust cover equipped with a safety interlock The cover must be removed to gain access to the tubes and or components To do so remove the two hex h...

Page 6: ...V4 PIN 1 140 0 0 NC 2 0 32 32 400H 3 1 5 380 380 117V tie point 4 32 380 380 350AC 5 32 26 35 NC 6 250 26 35 350AC 7 32 32 5 8 270 5 0 400 9 32 6 3 AC between pins 4 or 5 and 9 3 6 between pins 7 and...

Page 7: ...e and service discloses defect provided the unit is delivered by the owner to the manufacturer or through the authorized radio dealer or wholesaler from whom purchased intact for examination with all...

Page 8: ...Figure 4 Schematic Diagram 8 M 4000 ER418 10 54...

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