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Summary of Contents for Audio Research Reference 250
- Page 1 Owner’s Manual Reference 250 Monaural Amplifier ...
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Page 2: Table Of Contents
Contents Reference 250 Monaural Amplifier Illustrations 3 Preface 4 Packaging 4 Accessories 4 Vacuum Tubes and Preparation for Use 4 Installation 4 – 5 Warnings 5 Description of Controls 5 – 6 Connections 6 – 7 Remote Turn-on Connections 7... -
Page 3: Illustrations
3 ... -
Page 4: Preface
1. All input, driver and output-stage tube operate your Audio Research Reference locations are clearly labeled with tube type vacuum tube... -
Page 5: Warnings
“warm”, and if used for demand on the amplifier of up to 1000 watts prolonged periods, “hot” to the touch. All (which the Reference 250 will try to deliver). components within are, however, operated The importance of lowering the preamplifier... -
Page 6: Connections
Press BIAS switch a The Reference 250 puts out the same final time to exit the bias status function and amount of power whether the 4, 8 or 16- return meter power level ohm terminals are used. -
Page 7: Remote Turn-On Connections
The front power rocker plug on the A. C. power cord to minimize switch will not turn the Reference 250 off if hum. The power cord supplied with the the remote system is on. -
Page 8: Operating Procedure
4. Turn Reference 250 front panel power the front panel. switch from Off to On; a 45 second mute/warm-up cycle will follow. -
Page 9: Limited Warranty
OVERALL NEGATIVE FEEDBACK: 8.8dB. accepted the responsibility for warranty of SLEW RATE: 20 volts/microsecond. Audio Research products sold by them. The RISE TIME: 1.5 microseconds. specific terms and remedies for fulfillment of HUM & NOISE: Less than 0.2mV RMS – 110dB...
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