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Summary of Contents for HR AMP-4840
- Page 1 User’s Manual AMP-4840 40 Watt Audio Amplifier with RS-232 and IR Control UMA1272 Rev B Order toll-free in the U.S. 800-959-6439 CUSTOMER FREE technical support: 714-641-6607 or support@hallresearch.com SUPPORT Hall Research, 1163 Warner Ave. Tustin, CA 92780 INFORMATION www.hallresearch.com...
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Page 3: Table Of Contents
40 Watt Audio Amplifier with RS-232 Table of Contents 1.0 Introduction ................. 4 Features ....................4 2.0 Package Contents ................ 4 3.0 Connectors, Indicators, and Controls ........5 Input Panel ................. 5 Output Panel ................6 Top Panel ..................7 4.0 RS-232 Serial Control of Amplifier .......... -
Page 4: Introduction
AMP-4840 1.0 Introduction The AMP-4840 is a compact, economical and energy efficient (Class D) mono / stereo audio amplifier with 3 inputs (2 line in and 1 balanced microphone). Versatile design is compatible with dynamic, condenser or wireless microphones with fully adjustable control options including RS-232, IR, and front panel buttons. -
Page 5: Connectors, Indicators, And Controls
40 Watt Audio Amplifier with RS-232 3.0 Connectors, Indicators, and Controls Input Panel The input panel is shown above. There are two audio inputs that are mixed together they are the Mic In and Line In. The speaker output audio is a mix of these two inputs. -
Page 6: Output Panel
AMP-4840 • Mono: This position is also used for connecting two speakers, but the amplifier mixes the Left and Right audio so the sound from both speakers is identical. Use this position if you want the same mono sound from all speakers. In a large classroom, it may make sense to use this mode so all students get the same sound regardless of how close they are sitting to each speaker. -
Page 7: Top Panel
40 Watt Audio Amplifier with RS-232 Top Panel The SEL INPUT button and A/B LED indicators is to select which line input you are using, RCA inputs or 3.5mm. Remember, the selected input gets mixed with microphone input. If you are not using microphone input, reduce its volume to zero so you don’t have the added noise from the microphone amp in the output. - Page 8 AMP-4840 Command Description Response 1A1. Switching the audio to input 1 A: 1 -> 1 2A1. Switching the audio to input 2 A: 2 -> 1 0A0. Mute Audio of MIC and Line out Mute 1A0. Mute audio of MIC Mute MIC 2A0.
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Page 9: Troubleshooting
40 Watt Audio Amplifier with RS-232 5.0 Troubleshooting If you are experiencing problems getting the amplifier to work properly, please use the following troubleshooting suggestions. • Cycle Power on the device • Issue RS-232 Factory Restore command • Check wiring and speaker impedances used If you determine that your amp is malfunctioning, do not attempt to repair the unit instead, contact Hall Research Technical Support at 714-641-6607. - Page 10 AMP-4840 © Copyright 2018 Hall Research, Inc.
- Page 12 © Copyright 2018. Hall Research, Inc. All rights reserved. 1163 Warner Ave., Tustin, CA 92780 Ph: (714)641-6607...
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