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Owner’s Manual 

   

   

   

   

   

   

   

 

Model 

Reference 75 

Stereo Power Amplifier 

   

 

 

Содержание Reference 75

Страница 1: ...Owner s Manual Model Reference 75 Stereo Power Amplifier...

Страница 2: ...cessories 4 Warnings 4 Vacuum Tubes and Preparation for Use 5 Panel Controls 5 Installation 5 6 Connections 6 7 Remote Turn on Connections 7 Operating Procedure 7 Output Tube Bias Adjustment 8 Servici...

Страница 3: ...3...

Страница 4: ...ge 3 conductor power cord on your Reference 75 is equipped with a standard 3 prong grounding plug If used normally it will provide a safe earth ground connection of the chassis Defeat of the grounding...

Страница 5: ...le this is often recommended for solid state equipment Audio Research does not recommend this procedure for vacuum tube power amplifiers 2 000 hours of tube life will elapse in 84 days ROTARY KNOBS Se...

Страница 6: ...the red or speaker terminal to the wire that connects to the 4 or 8 terminal on the Reference 75 and tighten the speaker terminals securely to ensure best sonic results Matching It is important to us...

Страница 7: ...are provided to allow chaining connections to control two or more Reference 75s or other equipment The 12V IN jack should be connected to the 12VDC output of the master control system using a continu...

Страница 8: ...bias switch is set to that associated V number position The meter should be set to read in the center of the tube bias arc 65mA for each of the four output tubes V1 V4 for optimum sonic performance Se...

Страница 9: ...rranty vacuum tubes This Limited Warranty initiates from the date of purchase and is limited to the original purchaser or in the case of demonstration equipment limited to the balance of warranty rema...

Страница 10: ...Balanced input pin 2 IEC 268 OUTPUT TAPS 8 ohms 4 ohms OUTPUT REGULATION Approximately 1 0dB 8 ohm load to open circuit Damping factor approximately 8 OVERALL NEGATIVE FEEDBACK 15dB SLEW RATE 10 volts...

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