Sound Devices MM-1 User Manual And Technical Manual
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Sound Devices MM-1 User Manual And Technical Manual

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SOUND
DEVICES
®
MM-1
Microphone Preamplifier with

Headphone Monitor

User Guide and Technical Information
Sound Devices, LLC
300 Wengel Drive
Reedsburg, WI 53959 USA
Voice (608) 524-0625
Fax (608) 524-0655
interstage
www.sounddevices.com
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile
©2001-2002 Sound Devices, LLC

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Summary of Contents for Sound Devices MM-1

  • Page 1: Headphone Monitor

    Sound Devices, LLC 300 Wengel Drive Reedsburg, WI 53959 USA Voice (608) 524-0625 Fax (608) 524-0655 interstage www.sounddevices.com Phistersvej 31, 2900 Hellerup, Danmark Telefon 3946 0000, fax 3946 0040 www.interstage.dk - pro audio with a smile ©2001-2002 Sound Devices, LLC...

  • Page 2: General Description

    Its dual-stage limiter and high-pass filter prevent occasional sig- nal extremes from overloading down-stream equipment. The MM-1 is at home in a range of applications – film sound (boom operators), high-definition television production, corpo- rate/industrial environments, radio/television announce booths, and music production.

  • Page 3: Headphone Monitoring

    www.sounddevices.com Features High Performance Microphone Preamplifier Maximum of 66 dB of gain, in eleven discrete steps for accurate, repeatable gain settings. Dynamic range exceeding 120 dB 10 Hz to 50 kHz audio bandwidth. High immunity to RF interference due to transformers, RF filtering, and all-metal construction High current line output driver capable of driving very long cable runs.

  • Page 4: Block Diagram

    MM-1 Mic Preamp with Headphone Monitor User Guide and Technical Documentation Block Diagram Specifications Gain: 0 dB to 66 dB input to output, switch selectable (Mic - Line) Gain Accuracy +0.6, -0.1 dB with reference to front panel gain markings...
  • Page 5 www.sounddevices.com Input: Transformer-balanced, 2k ohm input impedance (Mic) Input: Electronically-balanced, 22k ohm input impedance (Monitor) Output: Transformer-balanced, 130 ohm output impedance (Line) Headphone Output Unbalanced, 200 ohms Impedance: Frequency Response: 10 Hz – 50 kHz, ±0.5 dB, gain at 50 % (Monitor In) Frequency Response: 10 Hz –...

  • Page 6: Front Panel Controls And Connectors

    MM-1 Mic Preamp with Headphone Monitor User Guide and Technical Documentation Front Panel Controls and Connectors PREAMP GAIN Switch (Rotary) Selects the amount of gain from input to output, adjustable in 11 increments. High-Pass Filter Switch Three-position switch inserts an 80 Hz or 160 Hz corner frequency filter, 6 dB per octave.

  • Page 7: Back Panel Controls And Connectors

    www.sounddevices.com Back Panel Controls and Connectors 10. LINE OUT Transformer-balanced line-level output. +22 dBu peak output level. 11. MIC IN Transformer-balanced XLR input accepts microphone level signals. 12. Phantom Voltage Switch Selects phantom voltages between 48 V or 12 V for mic powering. 13.

  • Page 8: Microphone Powering

    Both the microphone input and line output of the MM-1 can be balanced or unbalanced without problems. When unbalancing (either input or output) ground pin 3 to pin 1. There is no change in gain with an unbalanced connec- tion into or out of the MM-1.

  • Page 9: Battery Life

    +17 dBu. The two limiters enable the MM-1 to limit in excess of 50 dB, meaning that it is very difficult to clip the unit, no matter the gain setting. The Limiter LED on the front panel illuminates amber in proportion to the amount of limiting.

  • Page 10: Application Notes

    Wireless Boom Operator The MM-1 can be used to allow a boom operator to have an un-tethered con- nection to a production van or mix position. The microphone is connected directly to the MM-1, and the “boom op” can hear microphone audio directly in headphones.
  • Page 11 Radio/Television Announcer Position The MM-1 is used as a microphone preamplifier for an announcer’s microphone and can pass a mix-minus headphone feed to the announcer. Sending a line level signal from the announcer position to the main mixing console is pre- ferred over sending a mic level signal.

  • Page 12: Fcc Statement

    ONE (1) year from date of origi- nal retail purchase. This is a non-transferable warranty that extends only to the original purchaser. Sound Devices, LLC will repair or replace the product at its discretion at no charge.

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