Heathkit A 7B Schematic
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Extracted text from Heathkit A 7B Schematic (Ocr-read)
Page 1
HEATHKIT MODEL A78 and A-7C
AUDIO AMPLIFIERS
SPECIFICATIONS
Frequency Response... . . . . . . . . . . . . ................ 11.5 db 20 to 20,000 cps
Power Output ........ . . .................. . . . ..... . 6 watts
TubeComplement.................................1 - 12.55 FirstAmplifier
1 - 12SL7 Second Amplifier and
Phase Splitter
2 _ 12A6 Beam Power Output
1 - 5Y3 Rectifier
1 - 128H7 or 128J7 Preamplifier
(A-7Con1y)
Output'lmpedance ........ 4, 8, or 150th
InputVoltage.....................................110-125v01tsAC50/60cycles
Physical Specifications............................ 11 1/2 wide, 5 1/4 high, 6 1/2" deep
Shipping Weight. . . . . . . ..... . .................. . . .. 10 lbs.