RWM90U - Microphone Rockville - Free user manual and instructions

Product Type	Wireless Handheld Microphone System
Brand	Rockville
Model	RWM90U
Frequency Band	UHF (Ultra High Frequency) 600-690 MHz
Number of Channels	100 selectable frequencies
Transmission Range	Up to 90 meters (300 feet) line-of-sight
Receiver Outputs	Balanced XLR and unbalanced 1/4" (6.35mm) jack
Transmitter Power	2 x 1.5V AA batteries (not included)
Receiver Power	DC 12V 500mA power adapter (included)
Battery Life	Up to 8 hours of continuous use
Frequency Response	50 Hz - 15 kHz
Signal-to-Noise Ratio	≥ 90 dB
Total Harmonic Distortion	< 1%
Dynamic Range	100 dB
Receiver Dimensions (W x H x D)	420 x 180 x 45 mm (estimated)
Receiver Weight	1.2 kg (estimated)
Transmitter Dimensions	250 mm length x 50 mm diameter (estimated)
Transmitter Weight	300 g (estimated)
Included Accessories	2 handheld transmitters, receiver, audio cables, power adapter, rack mount kit
Maintenance	Clean with a dry cloth; avoid exposure to moisture
Safety Warnings	Do not use near water or heat sources; use only specified power adapter
Reparability	Batteries are user-replaceable; internal repairs should be done by qualified personnel
General Information	Designed for karaoke, presentations, and live performances

Frequently Asked Questions - RWM90U Rockville

How do I connect the Rockville RWM90U microphone system to a mixer or amplifier?

Connect the receiver's XLR output to a balanced microphone input or the 1/4" output to a line input on your mixer or amplifier. Make sure the receiver and connected equipment are powered on and the microphone battery is installed.

What type of batteries does the RWM90U handheld transmitter use?

The handheld transmitter requires 2 AA batteries (not included). Insert them with correct polarity and the LED indicator will show low battery when replacement is needed.

How can I reduce interference or dropouts during use?

Keep the receiver in a line-of-sight position, avoid metal obstructions, and select a different UHF channel if interference occurs. Also ensure the transmitter battery is fresh.

Can I use multiple RWM90U sets together at the same time?

Yes, but you must assign different frequency channels for each set to avoid crosstalk. The system offers 100 selectable frequencies for this purpose.

What is the maximum operating range of the RWM90U?

Under optimum conditions, the system has a range of up to 90 meters (300 feet) in open air, but walls and other obstacles can reduce this distance.

How do I clean and maintain the microphone?

Wipe the microphone grille and receiver with a soft dry cloth. Do not use water or chemical cleaners. Store in a dry place away from dust and extreme temperatures.

Is the receiver rack-mountable?

Yes, the receiver includes a rack-mount kit that allows installation in a standard 19-inch audio rack.

What should I do if there is no sound from the microphone?

Check that the transmitter is powered and the receiver is on the same frequency. Verify cables are connected to the mixer, and that the mixer input gain is set appropriately.

How long do the batteries last?

With typical use, a fresh set of AA batteries provides up to 8 hours of continuous operation.

Can I sing and use the microphone for karaoke?

Absolutely, the RWM90U is ideal for karaoke, live performances, and presentations thanks to its stable UHF transmission and clear audio reproduction.

USER MANUAL RWM90U Rockville

High Performance Quad Wireless Microphone System

OWNER'S MANUAL

ROCKVILLE

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.

ROCKVILLE

ROCCVILLE

Table of Contents

Specs 3

Receiver (Front) 4

Receiver (Back) 4

Microphones 5

Setup and Operation 6

Troubleshooting 7

FCC Statement. 8

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 filter 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

Receiver (Front)

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

I. Power button

Receiver (Back)

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)

a. Microphone windscreen
b. Power LED indicator
c. Power on/off switch
d. Battery compartment

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 microphone 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 significantly. Most mixers and powered speakers have both a Microphone input and a line level input.

• The receiver 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 receiver.
• 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.

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/amplifier.
	·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 surfaces.·Microphone must be used in line of sight from receiver for optimal sound.
Distortion Reduce microphone channel volume.
Sound level variations when switching to different sources	Adjust microphone volume as necessary.

FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE INFORMATION

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:

● Reorient or relocate the receiving antenna.
- 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.

ROCCVILLE

ROCKVILLE

RockvilleAudio.com