INTRODUCTION TO THE 195 SYSTEM
The DR195 employs the most advanced circuit and mechani-
cal design ever applied to a wireless microphone receiver.
Two independent, ultra-high performance receivers are
blended in a highly effective ratio diversity design. The audio
processing is the finest quality system ever developed for
wireless microphone systems. A unique design of a modular
RF section allows quick frequency changes, yet preserves the
high performance of an advanced fixed frequency design. The
DR195 re-defines the state of the art in high end wireless
microphone receivers.
The entire radio/audio system was designed from a “cold
start,” utilizing all that has been learned thus far. Many new
types of IC’s and semi-conductors are available now that were
only ideas a few years ago. The DR195 design takes advan-
tage of these new devices. The DR195 also takes advantage of
recent changes in the FCC rules and regulations, allowing
wider deviation, which improves the signal to noise ratio and
frequency response of the system dramatically.
The 195 Series system was designed for the most critical
studio and sound reinforcement applications. The system
design represents a significant step forward in wireless
microphone technology. Every stage in the entire audio/radio
chain from transmitter input to receiver output was evaluated
and analyzed to produce the operating parameters and perfor-
mance requirements for this entirely new design. The audio
system provides the lowest distortion and best signal to noise
ratio of any wireless mic system ever built. The RF link is
extremely stable, providing the highest reliability and freedom
from drop outs and interference.
MODULAR DESIGN
The DR195 receiver solves a key problem that has plagued
wireless microphone systems since the first designs were
completed. Most sound reinforcement companies, motion
picture sound mixers, and other traveling users face the
constant need for both highly reliable RF performance and
very high quality audio, while moving from one city or
location to another. Frequency coordination is a constant
struggle in this application in order to work out frequency
groupings for each new location. A frequency switchable
receiver sounds, at first, like it would provide some benefit for
this situation, but the poor RF performance of switchable
designs creates more RF problems than it solves. The “modu-
lar” design of the DR195 receiver blends the RF performance
of a fixed frequency design with the flexibility of a switchable
design.
Photo of DR195 and T195
4
(28 pages)
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