Safety Instructions Symbols and Descriptions Carts and stands: The product should be used only with a cart Read the instructions. All the safety and operating instruc- or stand that is recommended by Proficient. tions should be read before the product is used. Damage requiring service: The amplifier should be serviced Follow instructions.
• Line-Level Inputs (Left/Right): The line outputs from a preamplifier or receiver can be connected to the line-level inputs of the M3 amplifier using RCA cables. If the system has just one subwoofer output, simply plug it into either the left or right line inputs.
Depending upon placement of the subwoofer and the main speakers, and the environment in which they are placed, the Polarity, or phase, of the M3 needs to be optimized. While the system is playing, set the switch to “180º” and then back to “0º” in order to de- termine which setting feels louder, tighter and more controlled.
Troubleshooting The M3 Subwoofer System is designed for trouble-free operation when installed properly and operated correctly. Therefore, any problem that might occur is usually due to operator error. If you have a problem, please check the troubleshooting list first. If the problem persists, contact Proficient Technical Support at 1-877-888-9004 or e-mail us at techsupport@proficientaudio.com.
Limited Two-Year Warranty Proficient warrants exclusively to the original retail purchaser that the M3 Amplifier will be free from defects in materials and workmanship for a period of two years, provided that the product has been purchased from an authorized Proficient dealer.
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