Mcintosh C28

1,250.00

Upea etuvahvistin ja erittäin siisti kunto.

FREQUENCY RESPONSE: +0-0.5 dB 20 Hz to 20,000 Hz

DISTORTION: Will not exceed 0.1% at rated output level, 20 Hz to 20,000 Hz.

INPUT SENSITIVITY AND IMPEDANCE:

Aux, Tuner, Tape 1, Tape 2 : 0.25 volts / 250,000 ohms.

Phono 1 and Phono 2 : 2 millivolts / 47,000 ohms (1,000 Hz).

Microphone : 2.5 millivolts / 500,000 ohms.

Tape Head : 2 millivolts / 500,000 ohms (500 Hz).

HUM AND NOISE:

Aux, Tuner, Tape 1, Tape 2 : 90 dB below rated output.

Phono 1, Phono 2 and Tape Head : 78 dB below 10 millivolts input, equivalent to less than 1.2 microvolts at the input terminals. Microphone : equivalent to less than 1.5 microvolts at the input terminals.

OUTPUT LEVEL AND IMPEDANCE:

Main Output : 2.5 volts with rated input, 100 ohms source impedance, to operate into 47,000 ohms or more.

Tape Output : 0.25 volts, 150 ohms source impedance, from low level inputs, to operate into 47,000 ohms or more.

Headphone/Line Output : 0.75 volts into 8 ohm load or 2.5 volts into 600 ohm line, 0.2 ohm source impedance,

Center Channel Output : 1.25 volts with rated input to both channels, to operate into 47,000 ohms or greater.

AMPLIFICATION IN DECIBELS:

Aux, Tuner, Tape 1 and 2:

to Main Output : 20 dB;

to Tape Output : 0 dB;

to Headphone/Line Output : 17.5 dB.

Phono 1 and Phono 2 at 1,000 Hz:

to Main Output : 62 dB;

to Tape Output : 42 dB;

to Headphone/Line Output : 59.5 dB.

Microphone:

to Main Output : 60dB;

to Tape Output : 40 dB;

to Headphone/Line Output : 57.5 dB.

Tape Head at 500 Hz:

to Main Output : 64 dB;

to Tape Output : 44 dB:

to Headphone/Line Output : 61.5 dB.

POWER REQUIREMENT: 120 volts, 50/60 Hz, 45 watts.

DIMENSIONS: Front panel measures 16 inches wide (40.64 cm) by 5-7/16 inches high (13.81 cm). Chassis measures 15 inches wide (38.1 cm] by 5 inches high (12.7 cm) by 13 inches deep (33.02 cm) including PANLOC mounting brackets and back panel connectors. Knob clearance required is 1-1/2 inches (3.81 cm) in front of the mounting panel.

FINISH: Front panel is anodized gold and black with special gold/ teal nomenclature illumination. Chassis is black.

 

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