Nady Systems IRW-2PA - Manual (Page 4)

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SYSTEM FEATURES
IRW-2PA INFRARED PA SYSTEM
• All-in-one infrared wireless PA system—ideal for schools, lectures, conferences, or
karaoke applications
• Multi-functional wall hanging lockbox houses dual infrared wireless receiver,
preamp, power amp, and transmitters with battery-charging holders for safe and
secure charging and storage
• Two wireless microphones, an Aux Input and a hard-wired Mic Input allow up to
four total input signals, each with their own volume control
• Master Treble and Bass controls, and a 35W RMS power amp, perfect for driving
two 8Ω speakers or any number of small ceiling speakers
• Handheld microphones and/or bodypack/neck worn lapel microphones available
(2 x NiMH battery operation)
• Battery chargers with unique safety shut-down protection circuitry to detect
reverse polarity, damaged batteries, or non-rechargeables
• Line of sight transmission with no interference from systems in adjoining rooms
providing ultimate confidentiality and isolation
• Power on, IR reception, and battery charging status LED indicators
• 2 remote mount IR Sensors supplied, with 20 ft. and 35 ft. connecting cables and
variable-position wall mounts; each sensor with a Multiple Array of Wide-Angle
Infrared Sensitive LEDs
• UL approved AC/AC power supply
HT-6SC HANDHELD MICROPHONE TRANSMITTER
• Multiple array of high efficiency infrared emitter LEDs for optimum IR transmission
and range
• Power On LED
• Powerful uni-directional dynamic cartridge for optimum audio, minimal handling
noise, and maximum feedback rejection; rugged steel mesh ballscreen with anti-roll
ring
• Operates up to 6 hours on 2 NiMH rechargeable batteries
• Equipped with a charger protection circuitry that can detect and shut down
charging function if regular alkaline or non-rechargeable batteries are mistakenly
recharged
LT-6SC BODY-PACK TRANSMITTER
• Multiple array of high efficiency infrared emitter LEDs for optimum IR transmission
and range
• Power ON LED
• Channel A/B selector switch
• 3.5mm mini-jack for connection of lapel microphone/direct mic/headmic
• Audio input volume control
• Belt Clip and neck worn lanyard
• Operates up to 6 hours on 2 NiMH AA rechargeable batteries
• Equipped with a charger protection circuitry that can detect and shut down
charging function if regular alkaline or non-rechargeable batteries are mistakenly
recharged
2. Operation
a. The IRW-LT6 is provided with a 3.5mm Locking Jack (5) for connecting the
microphone. Plug in either the LM-14/O lavalier/lapel mic, DM-14/O direct mic,
or HM-10 headmic as supplied. To secure the connection, turn the metal slip ring
on the plug clockwise to thread it on the jack. To unplug, reverse the process. Clip
the transmitter to your clothes/belt, or hang the transmitter on your chest using the
supplied neck worn lanyard. Make sure the LT-6SC Emitter (4) has a clear line of
sight with the IR Sensor. To use the lavalier mic, attach it at upper chest level. Do
not place the mic too far from the mouth — a distance of about 5”- 7” usually works
best.
b. Adjust the LT-6SC Volume Control (6) to minimum and slide the Power Switch
(2) to the ON position. The bi-color Power ON/LOW Battery LED Indicator
(1) will light green, indicating that the transmitter is on. In the case of low battery
strength, the indicator will light red, indicating that the batteries should be replaced
with fresh ones or the NiMH batteries should be recharged.
The IRW-2PA IR Reception LED Indicator (6) of the corresponding channel should
change from red to green if the sensors are properly receiving the signal. If it is
not, check the IRW-2PA power, sensor connections, and make sure the transmitter is
within range of the sensor. For optimum performance and range, make sure that the
LT-6SC Emitter (4), on the “bubble” side of the bodypack, is not covered by the
body or clothing and has an unobstructed line-of-sight with the IR sensor.
c. While speaking into the microphone, slowly increase the LT-6SC Volume Control
(6) and adjust the corresponding IRW-2PA Volume Control (7) to the desired level
while taking care to avoid acoustic feedback. The microphone is now ready to use.
Note: Observe care in selecting volume, transmitter location, and speaker
placement so that acoustic feedback (howling and screeching) will be
avoided. Please also observe the pickup patterns of the microphone selected:
omnidirectional mics pick up sound equally from all directions and are prone to
feedback if not used carefully. Unidirectional mics are more resistant to feedback,
but pick up sound sources best that are directly in front of the microphone. Also,
mics that are farther from the sound source, such as lapel mics, require more
acoustic gain and thus are also more prone to feedback than close-source mics such
as handheld mics that are used close to the mouth.
If there is no audio, check your speaker connections and verify proper impedance
is being used. If there is still no audio, try turning the IRW-2PA power switch on and
off in case the amp went into short-circuit protection mode due to accidental wiring
during speaker installation.
3. Charging
The IRW-2PA Bodypack Charging Connector (13) can be plugged directly
into the LT-6SC DC Input Jack (3) using the connecting cable for easy charging
of NiMH batteries. One or two bodypacks can be charged simultaneously. When
the charger is connected, the corresponding IRW-2PA Battery Charging LED
Indicator (15) will light brightly red. The LED indicator will light green when the
batteries are fully charged.
Note: See charger section on page 9 for important charger opertaion information.
LT-6SC BODYPACK TRANSMITTER