Cambridge Audio A3i Integrates Amplifier

Cambridge Audio A3i Integrates Amplifier

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On: 06 Jun, 2019

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Category: Circuit

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Bias current set up
1.Switch on unit and allow to stand for 5 minutes, ensure volume control is at a minimum
2.a. With DC voltmeter connected across R23 reading should be 12mV +/- 1mV, adjust with P1 as necessary.
b...

Bias current set up
1.Switch on unit and allow to stand for 5 minutes, ensure volume control is at a minimum
2.a. With DC voltmeter connected across R23 reading should be 12mV +/- 1mV, adjust with P1 as necessary.
b.Measure voltage across R123 and adjust with P101
3. Repeat instructions 2a and 2b until readings are stable over a period of 5 minutes (There is a thermal delay between adjusting the bias current and the reading stabilising)
Spicifications:
Input sensitive
Phono:1.75mV
CD:400mV
Aux/Tuner/tape:200mV
INPUT IMPEDANCE: 47K
speaker impedance 4-16
power output: 50 watts rms into 8
frequency response:2Hz to 50kHz (-3dB points)
Channel separation: At 1kHz better than 75dB
Distortion:Less than 0.05%@ 1 Watt
Signal:Noise(a weighted) 90dB CD direct
80dB via tone controls
Dimensions(MM): 90(h)x430(w)x300(d)
Voltage AC: As specified on rear panel
Power consumption: As specified on rear panel

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Cambridge Audio A3i Integrates Amplifier

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