Altec

438C

Dynamics

Main Details
Maker Altec Brand Altec Lansing Brand Altec Lansing Corporation Company LTV Ling Altec, Inc. Company
Function
Channels/Tracks
  • 1 × Channel
Form Factor 19" Rackmount
Signal Path Analog Hardware
Made In United States
Date Produced 1965
Dimensions
(H × W × D)
Weight 8.5lbs
Power Source 115VAC, 60Hz 22W
Frequency Response 40Hz-10kHz ±1.5dB
Additional Specifications
Gain (Mic) 90dB
Gain (600Ω Source) 40dB
Maximum Compression 30dB
Power Output +24dBm
Compression Ratio (0dBm Threshold) 2:1
Compression Ratio (+16dBm Threshold) 4:1
Input Impedance 20kΩ
Source Impedance 150/250Ω Optional: 30/50Ω
Load Impedance 150Ω, 600Ω
Equivalent Input Noise -119dBm
Output Noise Level -50dB
Attack Time 50ms
Release Time (63% Recovery) 0.3s to 1.3s Adjustable
THD (25dB Compression, 35Hz-15kHz) 1.5%
THD (30dB Compression, 35Hz-10kHz) 2.5%
Tube Complement 12AY7, 6BC8, 6CG7, 6AL5
Finish Dark Green

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