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General| Brand | Altec Lansing |
|---|---|
| Model | 1270 POWER AMPLIFIER |
| Category | Amplifier |
| Language | English |
Monitors amplifier output for excessive current drain and temperature.
Protects the load from transients during startup, shutdown, and amplifier failure.
Detects output anomalies and illuminates peak/error indicators.
Details wattage delivered into 8-ohm and 4-ohm loads across frequencies.
Visualizes power bandwidth and square wave output characteristics.
Covers frequency response, impedances, S/N ratio, IM distortion, and slew rate.
Describes front panel controls like attenuators, switches, and LEDs.
Details input/output jacks, power cord, and power consumption.
Covers temperature range, dimensions, weight, enclosure, and accessories.
Guidelines for authorized service personnel and warranty voiding.
Instructions for domestic and export voltage configuration.
Steps for changing primary voltage via transformer wiring.
Steps to set bias potentiometer for correct output emitter voltage.
List of components for the main chassis with designators and descriptions.
Component list for the power supply and control printed circuit board.
Component list for the driver/output and detector printed circuit board.
Detailed circuit diagram for the power supply and control section.
Detailed circuit diagram for the driver, output, and detector stages.
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