Stereo/Mono: A three-position back panel switch used to select Stereo, Bridge-Mono or Parallel-Mono mode. Sensitivity: A three-position switch inside the back cover plate used to select the input sensitivity for both channels: 0.775 volts or 1.4 volts for standard 1 kHz power, or 26 dB voltage gain (see Section 2.3). Input Ground Lift: A two-position back panel switch used to isolate the phone jack and chassis grounds. Reset (Power Base-3only): A back panel push button used to reset the circuit

© 1996 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 219-294-8000. Power-Tech amplifiers are produced by the Professional Audio Division of Crown International, Inc. Trademark Notice: Power Base-3™ is a trademark and Power Base-1®, Power Base-2®, Crown,® IOC® and ODEP® are registered trademarks of Crown International, Inc. Other trademarks are the property of their respective owners. ® LL 32521C ® Applies only to 120 VAC, North American PB-1 and PB-2

STEREO BRIDGE MONO PARALLEL MONO DO NOT USE BLACK TERMINALS TURN CHANNEL 2 CAUTION: TURN OFF AMPLIFIER BEFORE CHANGING THIS SWITCH. STEREO BRIDGE MONO PARALLEL MONO CH-2 CH-1 CH-2 CH-1 CHANNEL 2 IS NOT USED IN THIS MODE. BINDING POSTS. THIS MODE. PARALLEL-MONO MODE POWER BASE AMPLIFIER Fig. 2.1 Three System Connection Methods Page 8 Power Base Series Power Amplifiers 2 Installation Always remove power from the unit and turn the level controls off (fully counterclockwise) when making or breaking

Once initially setup the computer becomes optional. The key to the MPX-6 operating as a stand alone mixer is distributed intelligence™. In an IQ System the brains of the system live out in the system. This means the audio system is not going to be lost even if the computer or communication cables fail. The MPX-6 is an ideal choice for applications where computerized manual mixing or routing is desired and the automation of the SMX-6 or AMB-5 automatic mixers is not required. HARDWARE BLOCK DIAGR

Also exported as Amcron® 126676-1 7/00 Crown International, Inc P.O. Box 1000, Elkhart, Indiana 46515-1000 (219) 294-8200 Fax (219) 294-8329 © 2000 Crown International, All rights reserved PZM® , PCC®, SASS® and DIFFEROID®,are registered trademarks of Crown International, Inc. Also exported as Amcron® SECTION ONE Microphone Technique Basics 3 How to: Reduce reverberation 3 Reduce background noise and leakage 3 Reduce phase cancellations between two mics 4 Reduce phase cancellations from surface