Altec

A-287F

Amplifier, Power

Main Details
Maker Altec Brand Altec Lansing Brand Altec Lansing Corporation Company
Function
Channels/Tracks
  • 1 × Channel
Form Factor 19" Rackmount
Signal Path Analog Hardware
Made In United States
Date Produced 1947-195?
Dimensions
(H × W × D)
Weight 141lbs
Power Source 105/117/130VAC, 50/60Hz 400W
Frequency Response 20Hz-20kHz ±1dB
Additional Specifications
Power Output 75W Requires 5W input from Altec A-126 or A-127 series amplifiers
Power Output (Reduced Plate Voltage) 50W Extends tube life
Gain 15dB
Topology Class A
THD (75W) 2%
IMD (75W) 8%
SNR 68dB
Noise Level (0.001W) -20dB
Input Impedance 14/56/125/220/500Ω
Output Impedance 2.25Ω, 4.5Ω, 9Ω, 18Ω
Load Impedance 3/6Ω, 6/12Ω, 12/24Ω, 24/48Ω
Load Impedance (Maximum Output) 4.5Ω, 9Ω, 18Ω, 36Ω
Output Tube 845 or 284
Tube Complement 845 (or 284) (x2), 866A (x2)
Finish Blue Gray
MSRP (1947) $715

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