Simaudio 870A Amplifier - Manual (Page 13)

870A Reference Dual-Mono Power Amplifier
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13
Specifications
Configuration ................................................ Dual Mono
Power Supply Transformers ............................ 2 x 1.3kVA
Power Supply Capacitance ............................. 240,000µF
Class Of Operation ........................................ A/AB
Design ........................................................... Fully Balanced Differential to output stage
Input Impedance .......................................... 47,500
Ω
Input Sensitivity ............................................ 1400mV
Output Device Type ....................................... Bipolars - 16 per channel
Output Power at 8
Ω ...................................... 300 Watts per channel
Output Power at 4 Ω ..................................... 600 Watts per channel
Output Power – Bridged Mono at 8 Ω ............... 1200 Watts
Frequency Response ...................................... 10Hz - 200kHz +0/-3dB
Output Impedance ........................................ 0.01
Ω
Damping Factor (static) ................................ 800
Gain ............................................................. 31dB
Signal-to-noise Ratio ..................................... > 106dB @ full power
Maximum Output Voltage ............................... 58 Volts
Slew Rate ..................................................... 42V/µs
Maximum Current – Peak ............................... 72 amperes
Maximum Current – Continuous ...................... 30 amperes
Crosstalk @ 1kHz .......................................... -105dB
Intermodulation Distortion ............................. Unmeasureable
THD (20Hz - 20kHz @ 1 watt) ....................... < 0.015 %
THD (20Hz - 20kHz @ 300 watts) .................. < 0.04 %
Power Consumption @ idle ............................. 70 Watts
AC Power Requirements ................................. 120V / 60Hz or 240V / 50Hz
Shipping Weight ............................................ 98 lbs / 44 Kgs
Dimensions (W x H x D, inches) ..................... 18.75 x 7.5 x 17.5
Balanced Pin Assignment:
Pin
1........................... Ground
Pin 2........................... Positive
Pin 3 .......................... Negative
12 Volt Trigger: Logic........................... Direct (0V off, 12V on)
Jack............................
3.5mm microphone jack
Input Impedance ......... 1k Ω
Current Consumption ... 12mA
NOTE: If you require the RS-232 codes for your 870A, 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 10A fast blow (3AG size).
For the 230V version use a 5A fast blow (3AG size).