Resolution Audio OPUS 21 S80 - Manual (Page 8)

RS-232 Serial Control
The s80 amplifier contains a serial control input which allows your entire Opus 21 family to be operated from an
automated controller. The RS-232 port operates in listen-only mode and is opto-coupled to prevent ground
loops. Programming commands and configuration details are available on our web site.
Thermal Protection
Due to the high-efficiency design of the s80, overheating is unlikely. Should the thermal protection be
triggered, the amplifier will mute the outputs. The display will indicate the internal temperature. Once the
amplifier has cooled sufficiently, the display will return to normal and the amplifier can then be un-muted.
Specifications
Dimensions 24 x 25 x 7.5 cm / 9.5 x 9.8 x 3" W x D x H
Weight 9.5 kgs / 21 lbs. shipping
Power Output 80 Watts continuous into 8 Ohms
Frequency Response +/- 0.1 dB from 20 Hz - 20 kHz
Maximum Gain +29.5 dB at volume level 99
Attenuation 0.5 dB steps from -30 dB to full scale
1.0 dB steps from -69 dB to -31dB
Inputs Direct connection to Opus 21 sources / cd player
(1 pair) Analog balanced via XLR
(2 pair) Analog single-ended via RCA
Resolution Audio
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+1 (415) 553-4100 Ph
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+1 (415) 840-0098 Fax
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www.resolutionaudio.com