Installation and Setup Instructions
To ensure reliable and safe operation of the unit, you should carefully read this instruction- and
setup-manual.
To prevent overheating, make sure that the cabinet and / or the rack is sufficiently ventilated
and that there are no other heat sources in the immediate vicinity.
For trouble-free operation the ambient temperature of 30° C must not be exceeded.
Please do not expose unit to direct sunlight or place it near a heater. Avoid splashing water,
high humidity and extensive dust and vibration.
Should a foreign object or fluid get inside the unit, be sure to disconnect unit from power
immediately and have it checked by authorized personnel.
Do not open unit, as otherwise warranty will be void.
Before switching the amplifier on, the master control as well as all input controls should
becompletely tur
ned to it’s utmost counterclockwise positions. Incorrect positioning of these
level controls can lead to sudden outburst of sound, that can
damage speakers and /or amplifier.
Features
2 x 240 W/100 V (UBA 3224), 4 x 120 W/100 V (UBA 3412)
Highly effective switching power supply
85% efficiency
Efficient cooling for space saving rack mounting
100 V mode without output transformer
Line input w. screw-/plug terminal
Status LEDs for (Signal in, Signal out, Clip/Limiter, Protection)
Wide range of protection circuits
Transformer- balanced 100V-input for each channel
Low Cut filter for each channel
Energy saving automatic channel deactivation in case of no input signal (ECO
–
mode)
19“ Rack mounting
