PRO SM-1
IMPORTANT INFORMATION...
Please read this entire manual before connecting the PRO
For optimum performance:
•Always make sure that AC power is OFF while making any connections.
•Do not use excessively long cables (i.e. over 50ft/14m). Be sure plugs and jacks are tightly mated. Loose connections can cause hum, noise or intermittents that could easily damage your speakers.
•Never use spray cleaners or oils on the slide controls. Residues will cause excessive dirt
•Never attempt to make any adjustments or repairs other than those described in this manual. Take the PRO 
Service Center.
A NOTE ON CABLES:
Quality cable makes a big difference in audio fidelity and punch. See your 
dealer or an electronics or audio specialist store if you are unsure which cables to use.
SYSTEM PRECAUTIONS
•Use appropriate cables throughout your system: Quality shielded audio cables and terminated shielded video cables,
•Reliability will be enhanced through the use of banana connectors on the speaker wires. Observe correct speaker wire polarity. If in doubt, consult your 
dealer or a qualified technician.
•Connect only one cable at a time, paying close attention to the
•ALWAYS REMEMBER
“TURN AMPS O N LAST AND OFF FIRST”. Begin with master faders or volume controls on minimum and the amplifier gain/input control(s) down. Wait 8 to 10 seconds before turning up the volume. This prevents transients which may cause severe speaker damage.
•Use restraint when operating controls by moving them slowly. Rapid adjustments may damage speakers due to amplifier clipping.
•Avoid amplifier “clipping” at all costs: this occurs when the red LEDs (usually on the front panel of most professional power amplifiers) start flashing. “Clipping” is when the power amplifier is distorting and working beyond it’s limits. Amplifier distortion is the major cause of speaker failure.
•To prevent fire or shock hazard, do not expose the unit to rain or moisture. Never place any beverage or anything wet on top of the mixer!
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