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The 802
®
C System Controller is a sophisticated signal processing device which combines the
functions of three equalizers, an automatic switching circuit, and an electronic crossover. The
802C system controller automatically selects the proper crossover function and equalization
curve for a given system application through use of a switching network operating in conjunc-
tion with the unit's output jacks. In addition to signal routing based on equalization require-
ments, the switching network indicates mode of operation on its front panel. The front panel
also includes high-cut and low-cut switches which decrease line output by 4dB at 55Hz and by
10dB at 16kHz. Sharp subsonic and ultrasonic band-limiting filters reduce power waste, stage
noise, high-frequency instability, and interference. The 802C system controller retains the
compact dimensions of its predecessor, the Bose
®
802E active equalizer, and fits into one
space of a standard 19" equipment rack with the optional RMK-8 Rack Mount Kit.
In an on-going process of manufacturing updates, as technology permits, Bose Corporation
has begun using SMD (surface mount devices) components on its 802C controller. The new
SMD components are such a space saving feature that this new version permits us to elimi-
nate the "piggy-back" PCB and place all electronics on one single printed circuit board. This
manual will identify the different procedures, PCB layouts, and components where necessary.
There is no difference in the operation or function between the original 802C and the
802C SMD units.
TECHNICAL DESCRIPTION