Alesis RA150 User Manuals

Table of Contents

• Introduction

  2
• Connectors

  18
• How to Use This Manual

  2
• Speaker Cables

  18
• Posts

  19
• Instructions de Sécurité Importantes (French)

  4
• The Importance of Speaker Polarity

  20
• Operation

  20
• (German)

  5
• OPERATION

  21
• CE Declaration of Conformity

  6
• Front Panel Controls

  21
• ABOUT THE RA150/300/500

  7
• Volume Controls

  21
• Principal Features

  7
• On-Off Switch

  21
• The Chassis

  7
• Mute Switch

  21
• Inputs and Outputs

  7
• Protect/Clip Indicators

  22
• Amplifier topology

  7
• Meters (RA300 and RA500 only)

  22
• Protection Circuitry

  7
• Back Panel Controls

  22
• About this manual

  8
• AC Voltage Switch

  22
• Stereo/Bridged Mono Switch

  22
• CONNECTIONS

  9
• Checking For Proper Polarity

  22
• Unpacking and Inspection

  9
• Using the RA150 as a Headphone Amplifier

  23
• Power Considerations

  9
• Choosing the Correct Speakers

  23
• The AC Cord and Grounding

  9
• About Ground Loops

  24
• 120 Volt/230 Volt Operation

  10
• System Setup and Testing

  25
• Fuse

  10
• Setting the Gain Properly

  25
• Output Relays/Thermal Cycling

  26
• Operating Environment

  11
• TROUBLESHOOTING

  27
• Mounting

  11
• Troubleshooting Index

  27
• Other Rack Mounting Tips

  11
• Care and Maintenance

  28
• Cleaning

  28
• Enclosure

  12
• Refer All Servicing to Alesis

  28
• Obtaining Repair Service

  29
• Inputs

  13
• Input Jack Characteristics

  13
• Canada:

  29
• Cables

  15
• SPECIFICATIONS

  30
• Cable Wiring Tips

  15
• Balanced or Unbalanced?

  16
• Outputs

  18
• INDEX

  34
• What's the Load Impedance?

  18
• ALESIS LIMITED WARRANTY

  35