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Summary of Contents for ATI Technologies M1000
- Page 1 M1000 DUAL MICROPHONE AMPLIFIER OPERATING AND MAINTENANCE MANUAL © Copyright 1997-2005, Audio Technologies Incorporated - Printed in USA Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www. audio.com...
- Page 2 1:20 input step up transformers in the M1000. High output capable of driving 600 ohm loads directly to +22dBm with total freedom from crossover distortion, high inherent linearity, 100 dB open loop gain and 50Mhz gain bandwidth product make this an ideal device for highest quality audio.
- Page 3 (unbalanced) output stage version with full +22dBm, 600 ohm drive capability for use in low RF environments for short line runs. Inaudible crosstalk characteristics allow use of the M1000 for either Stereo or Dual Monaural applications. A dual concentric gain control is provided to facilitate either mode of operation.
- Page 4 2, Lo (out of phase) to Pin 3, Shield to pin 1. Either 150 ohm or 50-ohm microphones can be connected to the MicroAmp without modification. The MicroAmp M1000 will accept microphone outputs up to 125 mVrms (-14dBm available power/150 ohms) without distortion.
- Page 5 R21 and R40 (M1000-1, -3) from 220K to 680K ohms (10 dB increase). The M1000-2 requires that R21 and R40 be increased to 330 K ohms and also R45 and R49 be increased to 820 K ohms for a 10 dB gain increase.
- Page 6 Microphone: -16dBm, 125mVrms MAXIMUM OUTPUT +22dBm/600 ohms (M1000-1, -1P). +24dBm/600 ohm (M1000-2, -2P) NOISE OUTPUT 124dBm EIN with 150 ohm source and 20kHz measurement bandwith. Yields 74dB S/N ratio with -50dBm microphone input. INPUT IMPEDANCE Microphone: 150 ohm source, 2500 ohm input...
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