DR-4000 Series Owner’s Manual
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INTRODUCTION
Thank you for choosing a Digital Reference’s wireless system. The DR-4000 series offers clear-channel, frequency-
agile UHF band operation for interference-free performance. It also delivers 1000 user-selectable channels,
frequency-synthesized in 10 groups and 100 channels on the US frequency band 672MHz–697MHz. This new
system feature proprietary companding and low-noise circuitry for an industry-best 120dB dynamic range, and the
clearest sound available in wireless today.
USING THIS MANUAL
This manual will explain the benefits of the DR-4000 Series while taking you through step-by-step operations. Each
section will give you detailed information about each unit. The Quick User Controls Guide, System Specifications,
and Servicing Information are also included for these systems:
DR-4000 Series Systems
DR-4600 Handheld Dynamic Microphone System
DR-4500 Instrument Body Pack System
DR-4000 SERIES UHF WIRELESS
SYSTEMS FEATURES
• State-of-the-art PLL UHF performance with 120dB
dynamic range and up to 300 feet of line-of-
sight operation.
• 1000 user-selectable UHF frequencies per band.
• True Diversity circuitry (with 2 complete front ends) to
maximize range and eliminate dropouts.
• Advanced RF filtering for simultaneous operation
of multiple DR-4600/DR-4500 systems in the
same location.
• Front panel touch control buttons with user-friendly
LCD configuration menus.
• IR (Infra-Red) data download from receiver to
transmitter for GROUP/CHANNEL programming.
• Separate audio LED bar graph display provides
instantaneous audio level status from a distance.
• Front panel—Backlit LCD display indicates selected
audio output VOLUME level, GROUP, CHANNEL, RF
signal strength meter, and A/B Diversity antenna status.
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