User Manual

MM-1 User Guide and Technical Information
2
Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
General Description
Sound Devices MM-1 combines a high-performance microphone preamplifier with a flexible
headphone monitor.
The full-featured, transformer-balanced microphone preamp produces low-noise, low-distortion
gain at all switch positions. Its dual-stage limiter and high-pass filter prevent occasional signal
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, corporate/industrial environments, radio/television announce booths, and
music production. With its headphone monitoring function the MM-1 is a benefit in applications
where communications channels and mix-minus feeds need to be monitored in headphones. The
user can monitor both microphone audio and external audio sources in headphones with level
control.
The MM-1 is designed for durability. Its extruded aluminum chassis, rugged end panels, machined
knobs, and panel mounted connectors assure reliable mechanical operation.
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ltering,andall-metalconstruction
• Highcurrentlineoutputdrivercapableofdrivingverylongcableruns.
• PremiumLundahlinputtransformerwithsuperiorsonicqualityandfreedomfrominterferenceprob-
lems.
• Extendedrangepeaklimiterviadualopto-isolatorsmakespreampliervirtually“unclippable”.
• Selectable48-volt/12-voltphantompoweror12-voltT-powerforcondensermicrophones.
• High-passlterwithtwoselectablecornerfrequencies,80and160Hz,6dBperoctave.
Headphone Monitoring
• Headphonemonitoringofmicrophoneaudio,externalmonitoraudio,oramixofboth.
• Monitorinputacceptsbalancedorunbalancedmonoline-levelinputson1/4-inchtip-ring-sleeveconnec-
tor.
• SeparatelevelcontrolofMonitorgainandoverallheadphonegain.
• SplitearfunctionviaDIPswitches.
Portable
• Internalbatterypower(two-AA)forconvenient,lowcostpower.
• Excellentbatterylifewithalkalineorlithiumprimarycells.
• External5–17VDCpowering(plugincluded).
Durable Mechanical Construction
• Highstrengthaluminumchassiswithstandspunishingeldconditions.
• Panel-mountedconnectorsforstrengthandreliability.
• Easyaccessbatterycompartmentforquickbatterychanges.
• Durablebeltclipandendpanels.