Sound Devices MixPre User Manual

SOUND DEVICES
MixPre Microphone Preamplifier
The MixPre from Sound Devices is a studio-quality
two-channel, portable, stereo microphone
preamplifier/mixer. With its pan switches, built in
slate microphone, 1 kHz tone oscillator, and
headphone monitoring, the MixPre is a flexible,
portable mixer. The MixPre has impressive audio
performance and comprehensive features, making
it ideal for the front end of any studio or field
High Performance Microphone Inputs
• Maximum of 66 dB of gain per input.
• Premium Lundahl input transformers provide
superior sonic quality and freedom from
interference problems.
• Sealed, conductive plastic potentiometers for
long-life, reliable gain adjustment.
• Phantom power, selectable between 48-volts
and 15-volts.
• High-pass filters with 80 or 160 Hz corner
frequencies, 6 dB per octave. Filters are
inserted prior to any active circuitry for extra
high headroom.
• Input panning to Left, Center, or Right outputs.
Audio Performance
• Dynamic range exceeding 110 dB.
• 10 Hz to 50 kHz audio bandwidth.
•
Exceptionally low distortion characteristics.
• Discrete 6-transistor balanced output drivers
provide robust drive for long cable runs.
Headphone Monitoring
• High current headphone monitor circuit enables
monitoring of program audio or external stereo
tape return audio.
• Headphone level control and peak-indicator.
P/N 388.004
Printed in U.S.A
User Guide and Technical Information

General Description

Features
production system. Radio, television, and film
production engineers value the compact size and
ability to withstand extremes in the field. The
MixPre combines rugged mechanical and electrical
construction, compact size, and high-quality
components. The MixPre allows no-compromise
performance for any application.
Level Metering
• Sunlight-readable, seven segment GaN LED
output meters.
• 3 position LED brightness switch.
• Two-color LEDs per input channel indicate
clipping and limiter activity.
Audio Limiters
• "Unclippable" input peak limiters via two-stage
opto-isolator circuit with adjustable limiter
threshold (per input).
•
Dual mono or linked stereo limiter operation.
Flexible Powering
• Internal battery-power from two AA batteries
with easy access battery compartment.
• Chassis-isolated external 5 to 18 VDC input on
4-pin Hirose connector.
• Power LED indicates low battery power.
Trouble Free Design
• High strength, extruded aluminum chassis with
protective metal end panels withstands
punishing field conditions.
• All-metal connectors solidly mounted to the
chassis for durability and RF immunity.
• Free from "Pin 1" grounding problems.
• RF filtering on all inputs and outputs.
Sound Devices, LLC
300 Wengel Drive
Reedsburg, WI 53959 USA
Voice 608.524.0625
Fax 608 524.0655
www.sounddevices.com
©1999-2002 Sound Devices, LLC