Conrad-Johnson LP125sa Owner's Manual - Page 12

Browse online or download pdf Owner's Manual for Amplifier Conrad-Johnson LP125sa. Conrad-Johnson LP125sa 12 pages. Vacuum-tube stereo amplifier

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pecifications

Power: 125

ohms from 30Hz to 15KHz at no more than 1.5% total harmonic

distortion or intermodulation distortion (can be re-connected

internally for 8 or 16 ohm loads).

Sensitivity: 1 V rms to rated power

Frequency Response: 20Hz to 20 kHz +0/-.3 dB

Hum and Noise: 100 dB below rated power output

Phase: phase correct

Input Impedance: 100 kOhms

Mechanical

Dimensions: 18.88"D x 19"W x 7.63"H

Net Weight: 82 lb net

Fuses

The LP125sa power transformer is protected by a fuse on the ac

power line (F5, located in a compartment in the ac line-cord

receptacle mounted on the back of the amplifier), and by four

separate internal fuses on the secondary circuits of the transformer

(F1 – F4) located on the bottom of the pc board. A failure of any of

these fuses is a symptom of a more serious problem, and a

competent service technician should be consulted. In no event

should fuses be replaced with a value or type different than that

originally supplied. The correct fuse values and types are:

The output stages are protected by plate fuses in series with

the output tubes. These are 5x20mm 1 A fast-blow ceramic

fuses, located inside the chassis in fuse holders mounted on

the vertical power supply board.

watts per channel RMS both channels driven into 4

F1, F2, and F3: 3AG ¼ Amp Slow-Blow

F4: 3AG 4 Amp Slow-Blow

F5: 5x20mm 10 amp T-type if configured for 100 or 120V:

5x20mm 5 amp T-type if configured for 220 or 240V.

LP125sa Owner's Manual