Bosch EVF-1181S EVF-1181S-BLK User Manual

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Contractor Precision Series amplifiers combine top-quality 

performance and reliability with innovative designs 

perfectly tailored to the needs of professional sound 

installation. Available in 2RU configurations of up to eight 

channels, CPS amps are compact and efficient to operate, 

with every detail thought through from the contractor's 

point of view. For fast installation and setup, each model 

features Phoenix-type input and output connectors, 

programmable power-on delay, remote power-on/off, 

rear-mounted attenuators and switchable high-pass filters. 

For worry-free dependability, there's full protection against 

hazards, such as excessive heat, overloads, shorts, HF, 

DC, back EMF and inrush current. And for the ultimate 

in system control and supervision, the optional RCM-810 

module enables the inclusion of CPS amps in IRIS-Net 

networks of up to 250 devices. offering exceptional ease, 

flexibility and audio performance, CPS series is the ideal 

installation solution for cinema, club sound, commercial 

sound/life safety, and performance and sports venues.

uniquE FLExibiLity through VLd

The ability to switch individually the mode of each power 

amp channel helps the DSA multi-channel power amplifiers 

to achieve a degree of flexibility never before possible. In low 

impedance operation (2 Ω, 4 Ω, 8 Ω), each channel can drive 

up to four 8 Ω loudspeaker cabinets. The output channels 

can also be paired in bridged mode. Depending upon the 

application, each channel can be switched individually even in 

high-impedance (Hi-Z) mode in order to drive 70 Vrms or 100 

Vrms loudspeaker lines directly without an output transformer 

(Direct Drive). The power output by the DSA multi-channel 

power amplifiers is (along with its thermal capacity) limited 

only by their maximum output voltage and maximum output 

current, which means they can drive any load between 2 and 

10 Ω with their rated maximum outputs of 500 W and 1000 W 

respectively per channel.

A corresponding encoder-circuit is provided on the rear panel. In addition, through VLD (Variable Load 

Drive) in combination with a RCM-810 remote control module, it is possible to define freely which output 

power should be made available at which load in the frame described above in the channel in question: 

e.g. Channel A = 350 W into 2.6 Ω; Channel b = 500 W into 8 Ω, etc.

650 W PER CHANNEL PoWER AMPLIFIER

•  Contractor-friendly performance and reliability
•  650 W per channel (2 Ω)
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter
•  Class-Ab design

•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  3-stage front-to-rear fans

900 W PER CHANNEL PoWER AMPLIFIER

•  Contractor-friendly performance and reliability
•  900 W per channel (2 Ω)
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter
•  Class-Ab design

•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  3-stage front-to-rear fans

1250 W PER CHANNEL CLASS-H PoWER AMPLIFIER

•  Power and efficiency for installations
•  Innovative Class-H design
•  1250 W per channel (2 Ω)
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter

•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  3-stage front-to-rear fans

500 W PER CHANNEL 4-CHANNEL AMPLIFIER

•  Four channels in one compact rack-efficient unit
•  500 W per channel
•  70/100 V operation for distributed systems
•  Class-D design for optimum efficiency
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  IRIS-Net selection of each channel's 

impedance (2–10 Ω in 0.1 Ω steps)

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter (Hi-Z mode)
•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  Front-to-rear fans

1000 W PER CHANNEL 4-CHANNEL AMPLIFIER

•  Four channels in one compact rack-efficient unit
•  1000 W per channel
•  70/100 V operation for distributed systems
•  Class-D design for optimum efficiency
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  IRIS-Net selection of each channel's 

impedance (2–10 Ω in 0.1 Ω steps)

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter (Hi-Z mode)
•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  Front-to-rear fans

500 W PER CHANNEL 8-CHANNEL AMPLIFIER

•  Eight channels in one compact rack-efficient unit
•  500 W per channel
•  70/100 V operation for distributed systems
•  Class-D design for optimum efficiency
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  IRIS-Net selection of each channel's 

impedance (2–10 Ω in 0.1 Ω steps)

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter (Hi-Z mode)
•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  Front-to-rear fans

1800 W PER CHANNEL CLASS-H PoWER AMPLIFIER

•  Power and efficiency for installations
•  Innovative Class-H design
•  1800 W per channel (2 Ω)
•  Slot for optional RCM-810 module, allowing 

IRIS-Net control and monitoring

•  Rear-mounted attenuators
•  Switchable 50 Hz high-pass filter

•  Complete protection: thermal, overload, shorts, 

HF, DC, back EMF and inrush current

•  Phoenix-type input and output connections
•  Remote power-on/off contact
•  Programmable power-on delay settings
•  3-stage front-to-rear fans

IRIS-NET REMoTE CoNTRoL MoDULE FoR CPS SERIES AMPLIFIERS

•  Enable powerful control and supervision capabilities
•  Integrate up to 100 devices in each remote 

control network, 250 with multiple networks

•  Support for 2-, 4- and 8-channel CPS models
•  Freely programmable control inputs and outputs

•  Load-monitoring for each channel
•  Variable Load Drive for independent 

channel impedance on 4- and 8-channel 
amps (2–10 Ω in 0.1 Ω steps)