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Summary of Contents for ATI Technologies MX100
- Page 1 MX100 MX100C MX101 XP100 MONO OUTPUT MIXERS 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.
- Page 2 Several XP100 Expanders may be added for up to a 23 input system with minimal noise buildup in the mixing network. The MX100 or MX100C alone makes an efficient stereo-to-mono combiner, a simple voice-over PA...
- Page 3 MX100, MX100C STUDIO MIXERS Both the MX100 and the MX100C also provide three inputs with front panel selection of microphone or line input levels. Phantom power and input stage gain is dipswitch programmable for any input. Phantom power is disabled in the line input mode. The MASTER level control feeds a high level output stage which comfortably drives either balanced or unbalanced output loads of 600 ohms or greater.
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Page 4: Phantom Power
CIRCUIT DESCRIPTION INPUT STAGES The inputs of the MX101, MX100 and MX100C are identical. They are designed around a very low noise and low distortion, balanced and floating input instrumentation amplifier. The SSM2017 is one of the latest generations of devices designed specifically for use as a low noise microphone amplifier. -
Page 5: Level Controls
labeled 48V phantom power. Check the microphone specification sheet for 9 to 52V or 12 to 48V ratings (includes almost all electrets type condenser microphones). Those few RF condenser microphones requiring a full 48VDC for phantom power will need an external power source (generally available from the microphone manufacturer). -
Page 6: Led Metering
Only stereo headphones should normally be used with the MX100; however, mono phones can be used in a pinch at reduced levels. The headphone output provides 100mW to phones of up to 600-ohm impedance and reduced levels into higher impedance phones. -
Page 7: Battery Power
Each XP100 Expander is supplied with a set of loop-thru DC and audio cables for easy interconnect to a companion MX100. The WA100 is a 400mA supply. Each MX100 draws about 120mA and each XP100 draws 70mA; therefore, one MX100 could be combined with up to four XP100s on a single power supply module (120 + (4 X 70) = 400mA). -
Page 8: Set-Up Adjustments
1, a DC cable, P/N20602-1, and an instruction book. The MX100 comes with an instruction book but does not come with any cables. The MX100 needs either its own separately ordered WA100 power supply or a DC cable, P/N20602-1 to share the supply of another. -
Page 9: Line Input Gain
push left) Repeat for S21 and S31 for inputs two and three. See mixer component location drawing. Microphone Input Gain Set the desired input stage gain for your microphones by setting rocker 2 ON to select 60dB input gain for low output mics, turn rocker 3 ON for 40dB gain for typical microphones or turn rockers 2 and 3 both OFF for 20dB gain and maximum input headroom for high output microphones. -
Page 10: Audio Connections
Hum and noise performance of the XP100 can be degraded by poor DC ground connections between it and the MX100. Use of the recommended rack and desk mounting kits will assure a good ground connection between units by firmly strapping their chassis together. - Page 11 An internal reference voltage equal to 1/2 the supply voltage is generated by A9 in the MX100 and A5B in the XP100. All audio stage inputs and outputs should show a DC level equal to this voltage when measured with a high impedance meter. XLR audio inputs and outputs are capacitor coupled and ground referenced.
- Page 12 PHANTOM POWER: +20VDC regulated @ 4ma through paralleled 3.32K Ohm resistors POWER: 24VDC, 22 to 30 VDC max. MX100 and MX101 draw 120 mA nom., 150 mA max. XP100 draws 70 mA nom, 82 mA maximum. DIMENSIONS in.(cm): 1.75(4.45)H X 5.6(14.22)W X 5.75(14.6)D; 1.25 lbs.57Kg...
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Page 13: Power Supplies
POWER SUPPLIES: WA100-1 Wall mount power supply (UL), 24VDC @ .4amp, 115 VAC/60 Hz. WA100-2 Wall mount power supply or Tabletop power supply with IEC 320 Male 3 pin AC input connector, 24VDC @ .4 amp, 230VAC/50 Hz. Rack Mount Kits: 20604-501 Center mount for single unit. -
Page 14: Field Accessories
FIELD ACCESSORIES: PROK-1 Unit protection kit, which consists of a set of side plates with, attached side brackets. The side plates protect front panel controls and the rear XLR connectors from impact damage and provide attachment points shoulder strap (not included); the slide brackets allow easy quick change of remote power packs.
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