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© Copyright 2018. Hall Research, Inc.

All rights reserved.

1163 Warner Ave., Tustin, CA 92780

Ph: (714)641-6607

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Summary of Contents for AMP-4840

Page 1: ...ier with RS 232 and IR Control UMA1272 Rev B Order toll free in the U S 800 959 6439 FREE technical support 714 641 6607 or support hallresearch com Hall Research 1163 Warner Ave Tustin CA 92780 www hallresearch com CUSTOMER SUPPORT INFORMATION ...

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Page 3: ... any interference even if it causes undesired operation This equipment has been desinged to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and...

Page 4: ... 10w 8 Ω or 1x 40w 8 Ω in bridge mode Two stereo audio inputs switchable by button IR remote RS 232 Volume Bass Treble controllable by buttons IR remote RS 232 MIC port supports balanced or unbalanced signals 3 5mm jack line audio output with controllable volume Mono mix switch for summing left and right channels for driving mono outputs Microphone input can be mixed with line input and each can b...

Page 5: ... level of the Microphone input signal as described below Phantom Use this position for microphones requiring phantom power such as condenser Mics Typical input level for this mode is 48 dBV 45 dBu or around 4 mv rms sine wave Dynamic This position is used for dynamic microphones with low level outputs Typical input level for this mode is 60 dBV 58 dBu or around 1 mv rms sine wave Wireless This pos...

Page 6: ...er 3 2 Output Panel Power input jack is used to connect the supplied 24 V adapter There is a Red LED indicator to show power status There are two outputs Line L R and Speaker screw terminal The L R outputs standard consumer line level variable audio When connecting two speakers connect them as shown for Stereo Mono settings When connecting a single 8 Ω speaker 40 w use the outer two terminals as s...

Page 7: ...t 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 The ADJ button is used to select which parameter to adjust then use the Up and Down arrow bottons to make the adjustment This button is for Muting the audio 4 0 RS 232 Serial Control of Amplifier RS232 communication protocol Baud rate 9600 Data bit 8 Stop bit 1 ...

Page 8: ... Treble 00 601 MIC volume up Volume of MIC 51 602 MIC volume down Volume of MIC 51 603 Line volume up Volume of LINE 51 604 Line volume down Volume of LINE 51 605 Bass level up Bass of LINE 04 606 Bass level down Bass of LINE 04 607 Treble level up Treble of LINE 04 608 Treble level down Treble of LINE 04 609 Initiate Factory Restore Init OK 5 xx Direct set MIC volume xx range 00 to 60 Volume of M...

Page 9: ...r 6 0 Specifications Audio Rated Output 2 x 20 w 4 Ω 2 x 10 w 8 Ω Gain 1 x 40 w 8 Ω in bridge mode 32 dB Frequency Range 20 Hz to 20 KHz Signal Noise Ratio 80 dB at max output Total Harmonic Distortion 1 1 KHz 0 3 20 KHz at nominal levels Input Impedance 10 Kohm Output Impedance 3 5mm Loop Out 50 Ω Speaker out 4 Ω 8 Ω Amplified Stereo Channel Separation 75 dB from 20 Hz to 20 KHz CMRR 70 dB from 2...

Page 10: ...AMP 4840 10 Copyright 2018 Hall Research Inc ...

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Page 12: ... Copyright 2018 Hall Research Inc All rights reserved 1163 Warner Ave Tustin CA 92780 Ph 714 641 6607 ...

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