Introduction
Congratulations on purchasing the Samson Concert IV VHF Wireless System! Although this product is
designed for easy operation, we suggest you first take some time to go through these pages so you can
fully understand how we’ve implemented a number of unique features.
Every wireless system consists of at least two components—a transmitter and a receiver, both of which
must be tuned to the same channel (that is, the same radio frequency) in order to operate correctly.*
The Samson Concert IV system you have purchased contains either a CR4 or CRND receiver as well as
one of the following transmitters: a CT4L belt-pack (for lavalier microphone and headset applications); a
a CT4G guitar belt-pack (for instrument applications); or an HT4 hand-held microphone.
The CT4L beltpack transmitter provides a Switchcraft P3 mini-XLR jack for connection to a variety of
popular headsets and lavalier microphones, including: Audio-Technica
ATM-75 headset; Audio-Technica
MT-350 lavalier; Audio-Technica Pro-8HE headset**; Audio-Technica 831H-7 lavalier; Countryman
IsoMax headset; Crown CM-311(E) headset; Foster ECM-40 lavalier; Samson QV headset; Samson QE
headset**; Sennheiser MKE-2 lavalier; Sony ECM-44 lavalier; Sony ECM-55 lavalier; and Sony ECM-77
lavalier. The HT4 hand-held microphone transmitter is available in a selection of popular mic capsules,
including: Electro Voice ND 757A N/DYM dynamic; Electro Voice ND 857 N/DYM dynamic; Electro Voice
BK-1 condenser; Samson Q MIC dynamic; Sennheiser MKE-4032 condenser; Shure SM58 dynamic;
Shure SM85 condenser; and Shure SM87 condenser.
The CRND receiver provided in some Concert IV wireless systems utilizes non-diversity technology,
incorporating a single antenna for ease of use and minimal cost. Those systems containing a CR4
receiver utilize a patented technological breakthrough called “Microprocessor True Diversity,” whereby a
single chassis houses two antennas (called “Antenna A” and “Antenna B”) and a receiver circuit. A built-
in computer chip continuously scans RF signals from the two antennas and determines which one has
the clearest and strongest reception, automatically (and silently) switching that signal to the receiver.
This allows you to maintain the wireless communication link over a much broader area range than would
be allowed by a receiver utilizing a single antenna and also virtually eliminates interference and phase
cancellation problems. In addition, special sample-and-hold linking circuitry ensures that correct phase
correlation is maintained at all times, with no noise or pops during antenna switching. The result is
performance which exceeds that of conventional antenna true diversity systems and the highest quality
audio fidelity available in
any wireless system. Finally, the provision of Signetics® noise reduction in all
Concert IV systems produces crystal-clear sound with minimized background noise and hiss.
In this manual, you’ll find a more detailed description of the features of your Concert IV system, as well
as a guided tour through all components, step-by-step instructions for setting up and using your system
and full specifications. If your Concert IV system was purchased in the United States, you’ll also find a
warranty card enclosed—don’t forget to fill it out and mail it! This will enable you to receive online
technical support and will allow us to send you updated information about other Samson products in the
future. If your Concert IV system was purchased outside of the United States, contact your local
distributor for warranty details.
SPECIAL NOTE for U.S. purchasers: Should your Concert IV system ever require servicing, a
Return Authorization number (RA) is necessary. Without this number, the unit will not be accepted.
Please call Samson at 1-800-372-6766 for a Return Authorization number prior to shipping your unit.
Please retain the original packing materials and, if possible, return the unit in its original carton and
packing materials. If your Concert IV system was purchased outside of the United States, contact your
local distributor for servicing information.
* Your receiver and transmitter have been factory preset to utilize the same channel.
** Optimized for aerobics workouts, this waterproof headset is recommended for usage in high-humidity
environments such as physical fitness centers.
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