High Performance Quad Wireless Microphone System
OWNER’S MANUAL
RWM90U
Thank you for purchasing this Rockville RWM90U UHF Quad Wireless Micro-
phone System.
Please read this owner’s manual carefully for proper use of your Rockville RWM90U
UHF Quad Wireless Microphone System. Should you need technical assistance
please call our technical help line at 1-646-758-0144, Monday through Friday, 9am
to 5pm EST.
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Specs ..............................................................................................................
Receiver (Front) .............................................................................................
Receiver (Back) ..............................................................................................
Microphones ....................................................................................................
Setup and Operation .......................................................................................
Troubleshooting ..............................................................................................
FCC Statement. ..............................................................................................
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Table of Contents
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Specs
FEATURES
• High performance wireless microphone system
• Includes transmitter with 4 high sensitivity, unidirectional, wireless,
handheld cardioid microphones
• High sensitivity, unidirectional, wireless cardioid microphones
• Color coded microphones
• Featuring a dual lter design to limit feedback and interference
• Ultra signal stability eliminates unwanted distortion
• Professional receiver with a multifunction display shows frequency, signal
synch, and audio input
• Transmitter automatically links to receiver for ease of use
• Individual microphone volume controls
• Rugged metal housing
• Comfortable ergonomic composite microphone construction
• Low power consumption for longer battery life
SPECIFICATIONS
Operating Range: 300´ – 400´ (indoor), 250´ – 350´ (outdoor)
Channels: 4
Operating Frequency: 467.9MHz – 490.7MHz
Frequency Response: 50Hz – 15KHz (±3dB)
Frequency Stability: ±0.005%
Dynamic Range: 105dB
Signal-to-Noise Ratio: 100dB
T.H.D.: <0.5% (1KHz)
RF Output Power: 10mW
Output Level: 0 – 300mV
Modulation Mode: UHF
Oscillation Mode: Quartz crystal
Audio Outputs: (4) XLR balanced & (1) 1/4˝ mixed
Mic Battery Operating Time: Up to 10 hours
Operating Temperature: 3°F – 130°F
Power Voltage: AC 110/220V – 50/60Hz
*Operating range is subject to environmental conditions. Results may vary.
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a
e
f
g
h
i
j
k
l
b
c
d
a. Antenna A: MIC A
b. Antenna B: MIC B
c. Antenna C: MIC C
d. Antenna D: MIC D
e. MIC A Volume adjustment knob
f. MIC B Volume adjustment knob
g. RF signal LED indicator
h. LCD Display: shows AF/RF signal strength, frequency, and channel
i. AF signal LED indicator
j. MIC C Volume adjustment knob
k. MIC D Volume adjustment knob
l. Power button
Receiver (Front)
Receiver (Back)
d
c
b
a
a. Antenna A: MIC A
b. Antenna B: MIC B
c. Antenna C: MIC C
d. Antenna D: MIC D
e. MIC A XLR Balanced audio out
f. MIC B XLR Balanced audio out/squelch control (to reduce background noise)
g. Power input
h. MIC C XLR Balanced audio out/squelch control (to reduce background noise)
i. 1/4˝ TRS Mix out
j. MIC D XLR Balanced audio out/squelch control (to reduce background noise)
e
f
g
hi
j
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Microphones
a. Microphone windscreen
b. Power LED indicator
c. Power on/off switch
d. Battery compartment
a
b
c
d
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Setup and Operation
• The reciever should be placed in an area that is stable and least likely to
shake the unit.
• The receiver should be at least 3´ off the ground for optimal transmission.
• Connect the antenna, balanced cable AF line, and power supply provided.
• The antenna should extend vertically.
• Switch on the reciever.
• While the receiver is in stand-by, switch on the microphones.
• Adjust volume as necessary.
Tip:
To minimize feedback
avoid operating the
microphones in close
proximity of or in front
of speakers.
For best performance of the wireless microphone system you should make sure
that you run the cable from the receiver output (XLR or 1/4 output) into a micro-
phone input on a powered speaker or mixing board. If you run it right into a line
level input then the audio volume level output of the microphone(s) will drop sig-
nicantly. Most mixers and powered speakers have both a Microphone input and
a line level input.
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Troubleshooting
Problem Soluton
No sound or faint
sound
• Verify all sound system connections or adjust
channel volume as needed.
• Verify that the receiver is connected to the mixer/
amplier.
• Turn on microphone.
• Make sure the batteries are installed correctly.
• Charge or change battery.
• Make sure AC adapter is securely plugged into
electrical outlet.
• Make sure reciever is powered on.
Audio artifacts or
dropouts
• Identify nearby sources of interference (cell
phones, Wi-Fi access points, signal processor,
etc...) and shutdown or remove source.
• Change microphone battery.
• System must be set up within recommended
range and receiver kept away from metallic sur-
faces.
• Microphone must be used in line of sight from
receiver for optimal sound.
Distortion Reduce microphone channel volume.
Sound level
variations when
switching to differ-
ent sources
Adjust microphone volume as necessary.
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Responsible party name: Rockville
Address: 600 Bayview Ave,
Entrance A,
Inwood, NY 11096
Hereby declares that the product Rockville RWM90U UHF quad wireless microphone kit
complies with FCC rules as mentioned in the following paragraph:
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
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Reorient or relocate the receiving antenna.
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Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE INFORMATION
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© 2019 ROCKVILLE // Features and specifications are subject to change and or improvement without notice.
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