Instruction Manual

850P Reference Dual-Mono Preamplifier
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Specifications
Configuration ................................................ Fully balanced, dual-mono
Power Supply Transformers ............................. 2 x 150VA (audio); 1 x 10VA (controller)
Power Supply Capacitance ............................. 50,000µF
Circuit Topology ............................................. Open Loop
Balanced inputs (XLR) .................................. 3 pairs
Single-ended inputs (RCA) ............................ 4 pairs
Monitor Loop (RCA)........................................ 1 pair
Input Impedance .......................................... 11,000Ω
Input Sensitivity ............................................ 200mV – 4.0V RMS
Balanced outputs (XLR) ................................. 2 pairs
Single-ended outputs (RCA) ........................... 2 pairs (fixed and variable)
Output Impedance ......................................... 50Ω
Gain Control ................................................. M-Ray (Fully Discrete R-2R)
Gain .............................................................. 9dB
Signal-to-noise Ratio (20Hz-20kHz) ................. 130dB @ full output
Maximum Output Voltage (Balanced) ............... 15 Volts
Maximum Output Voltage (Single-Ended) ......... 7.5 Volts
Frequency Response ...................................... 5Hz - 100kHz +0/-0.1dB
Crosstalk @ 1kHz .......................................... -130dB
Intermodulation Distortion ............................. Unmeasureable
THD (20Hz - 20kHz) ..................................... < 0.0005%
Remote Control ............................................. All Aluminum Full-Function Backlit (FRM-3)
Display Type................................................... 8 character dot matrix LED
Power Consumption @ idle ............................. 25 Watts
AC Power Requirements ................................. 120V / 60Hz or 240V / 50Hz
Shipping Weight ............................................ 151 lbs / 67 Kgs
Dimensions – Preamplifier (W x H x D, inches).. 18.75 x 4.0 x 16.5
Dimensions – Preamplifier (W x H x D, cm.) .... 47.6 x 10.2 x 41.9
Dimensions – Controller (W x H x D, inches) .... 18.75 x 5.5 x 16.5
Dimensions – Controller (W x H x D, cm.) ....... 47.6 x 14.0 x 41.9
Balanced Input and Output Pin Assignment:
Pin 1........................... Ground
Pin 2........................... Positive
Pin 3 .......................... Negative
NOTE: If you require the RS-232 codes for your 850P, please visit the "Contact Us" page
and complete the "Information request" form on our website at
www.simaudio.com.
Fuse Replacement: For the 120V version use a 0.4A slow blow (5 x 20mm size).
For the 230V version use a 0.2A slow blow (5 x 20mm size).