INSTRUCTION MANUAL PA8 8 Channel Power Amplifier Fill in for your records: Serial Number: Purchase Date:
PA8 Introduction The PA8 8 Channel Power Amplifier is a unique single rack-space solution for zoned, distributed loudspeaker systems with eight separate power amplfiers, each with an output power capability of 10W (4 Ohms) or 6W (8 Ohms.) 2 The PA8 is passively cooled, and features full shortcircuit and thermal overload protection.
8 Channel Power Amplifier Table of Contents Introduction...............................................................................................................................................................2 Contents...................................................................................................................................................................3 General Technical Description............................................................................................
PA8 General Technical Description The PA8 uses a straightforward, low parts count design for long term reliability. The heart of the power supply is a low radiation toroidal transformer. The toroidal transformer generates less heat than a comparable non-toroidal type, and emits considerably less 60Hz energy. This is particularly important when the PA8 is used in close proximity to microphone preamplifiers. The input to the PA8 is fully balanced and RF filtered.
8 Channel Power Amplifier Front Panel Description POWER SWITCH - Turns AC power on and off. POWER LED - Indicates the presence of AC power to the PA8. CHANNEL LEVEL 1-8 - Controls the volume level of each channel.
PA8 Troubleshooting SYMPTOM POSSIBLE CAUSE No sound from system 1) Channel Level control not turned up 2) Channel input incorrectly wired 3) Power switched off 4) Fuse may be blown Specifications Line Input Type: Impedance: Input Level for Rated Output: Output Power: Output impedance: Maximum System Gain Line Input to Speaker Out: Electronically balanced and RF filtered 20k Ohms, Balanced or Unbalanced -2dBu (615mVRMS) at maximum level +15dBu (4.
8 Channel Power Amplifier Service and Repair If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual.
PA8 LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor.
