Knoll MA250 Installation And Operation Manual

MA250
Stereo Power Amplifier
INSTALLATION
AND
OPERATION
MANUAL
Version 1.1
Congratulations and thank you for choosing the Knöll
MA250 power amplifier. The MA250 is designed to meet
the amplifier needs where high quality sound is a specific
requirement.

Key Features:

Manual and Automatic Power On and Off.
1.
The MA250 stereo power amplifier is designed to be
turned on when a video signal is detected, music inputs are
sensed, a 12 volt trigger is activated or the front panel
power switch is pushed on. Power off is automatic in all
modes except the front panel power button.
Whole house music override
2.
businesses and motorhome applications (typically with
plasma or large screen TV's) the MA250 features
amplifier inputs so that whole house music system can be
heard on the local speakers (without the MA250 turned
on). When the local source (TV, dish, etc.) needs amp
power, the whole house music is automatically switched off,
the MA250 amplifier turns on and plays the local source.
Automatic protection circuitry
3.
channel is individually and fully protected against low
impedance, overheating, overloading, overvoltage and
undervoltage. The protection circuitry automatically
restores the amplifier channel as soon as its parameter
returns to the safe operating area.
Individual input gain adjustment
4.
features an input gain adjustment pot to adjust each
channel for gain and speaker sensitivity variations. The
gain adjustments are on the rear of the MA250 so
installers normally set the gain.
Stackable 17" chassis
5.
by side and stacked for applications requiring more than
two amplifier channels.
. In homes, yachts,
. Each MA250
. Each channel
. Two MA250's can fit side
2