USB 7132 / 7133 / 7134
Professional Power Amplifier
USER RESPONSIBILITY
Your PA600/800/1400 series amplifier is very powerful and can be potentially dangerous to loud-
speakers and operators alike. It is your responsibility to read important precautions and make sure
that the amplifier is installed, wired, and operated properly as instructed in this manual.
Many loudspeakers can be easily damaged or destroyed by overpowering, especially with the high
power available from a bridged amplifier. Always be aware of the speaker s continuous and peak
power capabilities. We are is not responsible for damage to loudspeakers for any reason.
Speaker protection
All loudspeakers have electrical, thermal and physical limits which must be observed to prevent
damage or failure. Cone or compression drivers can be damaged (sometimes to the point of failure)
by excessive power, low frequencies applied to high frequency drivers, severely clipped wave forms,
and DC voltage. All Series amplifiers automatically protect speakers from DC voltages and subsonic
signals.
Tour Class Protection
The amplifier s clipping point is its maximum peak output power. At maximum peak output power,
PA 600/800/1400 amplifiers will deliver more power than many speakers can safely handle. Be sure
the peak power capability of the amplifier is not excessive for your speaker system. To ensure that
the speakers never receive excessive power, and to prevent amplifier from clipping, use a properly
adjusted external limiter (or a compressor with a ratio of 10:1 or higher) to control power output.
Use one compressor/limiter for each frequency ban d in systems with active electronic crossovers.
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