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Summary of Contents for Audio Research Reference 75 SE
- Page 1 H I G H D E F I N I T I O N ® Reference 75 SE...
- Page 3 Thank you for choosing the Reference 75 SE to be a part of your high performance music listening system. Since 1970, Audio Research has been creating some of the world’s finest audio equipment. Each piece is handcrafted in Minnesota, and has been designed to provide many years of listening enjoyment.
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Page 4: Table Of Contents
Contents Warnings Installation Before Operating the Reference 75 SE In Your System Connections Back Panel Controls and Connections Input Connectors Output Connectors Matching Remote Turn-on A.C. Power Connection Operation Front Panel Controls and Displays Start-Up Shut-Down Break-in Display Brightness Adjustment... -
Page 5: Warnings
The detachable power cord on your factory for service, but if that should Reference 75 SE is equipped with a heavy prove necessary, or other occasion gauge, 3-conductor cable and a standard requiring shipment occurs, the original three-prong grounding plug. -
Page 6: Installation
FRONT Before operating the Reference 75 SE Remove all screws fastening the top cover. Your Reference 75 SE amplifier is shipped Carefully remove each vacuum tube with the vacuum tubes packed in foam from its protective foam and match its blocks. -
Page 7: In Your System
Installation In your system The ‘ambient’ operating temperature should To insure normal component life and safe never exceed 120° F or 49° C. Improper operation this unit must be operated installation will cause premature tube only in an upright position. Adequate failure and will affect your warranty, airflow and proper cooling can occur as well as the service life of the unit. -
Page 8: Connections
Connections Back Panel Controls and Connections Left and Right XLR inputs 12V remote trigger Meter Lights on/off REFERENCE 75 STEREO AMPLIFIER PLYMOUTH, MINNESOTA RIGHT INPUT LEFT INPUT MADE IN U.S.A. METER LIGHTS WARNING CAUTION TO PREVENT FIRE AND SHOCK HAZARD, DO NOT RISK OF ELECTRIC SHOCK EXPOSE THIS DEVICE TO RAIN OR MOISTURE. -
Page 9: Input Connectors
Connections Input Connectors Important The Reference 75 SE uses a fully balanced Use the best available speaker wires circuit topology and has a pair of balanced and interconnects. Audio Research XLR input connectors on the rear panel. It cannot emphasize this enough. As... -
Page 10: Remote Turn-On
Connections Remote Turn-on The Reference 75 SE has a built-in 12V DC remote turn-on/off circuit for operation by a master control system in a home theater or large audio system. Use a 3.5mm (.140”) diameter mono mini plug to connect to the +12V IN jack on the rear of the Reference 75 SE. -
Page 11: A.c. Power Connection
Only use the power switch on when properly connected to a grounded the front of the Reference 75 SE for On/ wall receptacle. If there is any question Off control of the amplifier, or the 12V regarding proper grounding procedures in start-up trigger for remote installations. -
Page 12: Operation
Operation Front Panel Controls and Displays Power output and bias meters POWER OUTPUT LEFT POWER OUTPUT RIGHT OPERATE OPERATE OPERATE OPERATE BIAS BIAS BIAS BIAS POWER VACUUM TUBE REFERENCE 75 POWER AMPLIFIER HIGH DEFINITION Main Power Switch Bias/Operate Switches... -
Page 13: Operation
• Turn on preamp and all other it will only improve with continued use. components; mute preamp output. Display Illumination • Press Reference 75 SE front panel control switch. Green power LED will light. The front panel meter display is illuminated • Unmute preamplifier output,... - Page 14 Operation Output Tube Bias Adjustment As shipped from the factory, the output ‘bias’ adjustments are set for a nominal 65mA per KT150 tube. Under these idle conditions the tubes are each dissipating approximately 27 watts of their 60 watt rating. This point of operation provides ‘enriched’...
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Page 15: Maintenance
Cleaning It is recommended that you replace the To maintain the new appearance of this vacuum tubes of your Reference 75 SE amplifier, occasionally wipe the front in sets. All of the tubes in your amplifier panel and top cover with a soft, damp have been matched to have similar (not wet) cloth to remove dust. -
Page 16: Warranty
Limited Warranty are listed on the Audio Research factory, along with a the warranty card accompanying the photocopy of the dated purchase receipt product in its shipping carton. The... -
Page 17: Specifications
Specifications Power Output: 75 watts per channel Overall Negative Feedback: 15dB continuous from20Hz to 20kHz. 1kHz Slew Rate: 10 volts/microsecond total harmonic distortion typically 0.6% at 75 watts, below 0.05% at 1 watt. Rise Time: 4.0 microseconds Approximate actual power available at ‘clipping’... - Page 18 D E F I N I T I O N ® 3900 Annapolis Lane North Plymouth, MN 55447 www.audioresearch.com Specifications subject to change without notice. ©2015 Audio Research Corporation. Reproduction of this document in part or whole is expressly forbidden without written consent from Audio Research Corporation.
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