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Crucial safety guidelines to follow before operating the amplifier, including avoiding liquids and heat.
Details the risk of electrical shock from speaker output terminals and the necessity of connecting to correct impedance.
Advice on professional servicing and safe handling of hot tubes during replacement, emphasizing unplugging the unit.
Direct warnings to prevent damage, fire, or shock hazards, emphasizing no user-serviceable parts and earth grounding.
Explains the design choice of point-to-point wiring to avoid capacitance and maintain signal integrity and harmonic richness.
Describes component mounting using eyelets/turret tags and protection via conformal coating against noise and moisture.
Details the steel chassis, interleaved transformers, and rigid pine/ply cabinet construction for sound reproduction.
Discusses the simple pre-amp design for ease of use and tone controls for wide frequency adjustment.
Explains the Class 'AB' output stage, cathode bias resistors, and valve matching for optimal performance and longevity.
Details the high and low impedance inputs for different instrument types and gain variations.
Explains the function of Volume (pre-amp gain) and Master (output stage/effects loop) controls for sound adjustment.
Describes how Bass, Middle, and Treble controls adjust specific frequency ranges, with a pull switch on Treble.
Explains the MAINS indicator for power status and the STANDBY control to cut HT voltage.
Details the 4 & 8 Ohms output switch for connecting external speaker cabinets to match impedance.
Guides on connecting external effects units using the Send/Return FX Loop sockets for signal processing.
Covers the mains switch delay operation due to a thermistor and the function/replacement of mains and HT fuses.
Details power supply voltages, frequencies, wattage, and fuse types for different US and GB models.
Specifies input impedance values (Hi and Lo) and the amplifier's output rating (50 Watt R.M.S Class 'AB').
Describes the cabinet material (plywood, pine) and provides physical dimensions (height, width, depth).
Lists the amplifier's weight (45 lbs / 20.5 Kgs) and available optional features upon request.
Information on tube life, replacement procedure, and specific valve types (12AX7, ECC83, 12AT7, ECC81, 5881).
Explains causes of valve failure, potential damage, and the role of fuses in protecting the amplifier from faults.
General| Brand | Cornell |
|---|---|
| Model | Acoustic |
| Category | Musical Instrument Amplifier |
| Language | English |
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