RDL EZ-MXA20 User manual

INSTALLATION AND
OPERATION MANUAL
RDL EZ Series products provide the highest level of value to A/V professionals and A/V users who demand professional quality.
For long-term performance, quality and value, you have made the EZ choice. EZ products are made in the USA by RDL, the
inventor of application-specific modules bringing decades of experience as the world’s leading manufacturer of high-reliability
performance products to the A/V industry. Visit the RDL website for hundreds of professional A/V products made in the USA by RDL.
RDL•659 6th Street •Prescott, AZ •USA 86301 •Sales: 800-281-2683 •928-443-9391
Tech Support: 800-933-1780 •928-778-3554 •RDL Europe Sales & Support: (31) 20-6238-983
www.rdlnet.com
Decades of Performance, Quality and Value
EZ-MXA20
20 Watt Stereo Audio Mixer Amplifier with Tone Controls
Model numbers:
EZ-MXA20 includes power supply with North American plug
EZ-MXA20X includes worldwide power supply (specify plug)
INSTALLATION AND
OPERATION MANUAL
RDL EZ Series products provide the highest level of value to A/V professionals and A/V users who demand professional quality.
For long-term performance, quality and value, you have made the EZ choice. EZ products are made in the USA by RDL, the
inventor of application-specific modules bringing decades of experience as the world’s leading manufacturer of high-reliability
performance products to the A/V industry. Visit the RDL website for hundreds of professional A/V products made in the USA by RDL.
www.rdlnet.com
Decades of Performance, Quality and Value

www.rdlnet.com • ••www.rdlez.com
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Audio Amplifier with Mic and Line Input Mixer
10 Watts RMS Per Channel into 8 Ω
8 Watts RMS Per Channel into 4 Ω
Switch-Selectable Load Impedance on Rear Panel
Balanced Microphone Input on XLR
Unbalanced Line Inputs on RCA Jacks
Switch-Selectable Phantom on Mic Input
Bass and Treble Tone Control Equalization
Integral Overload Limiter with LED Indicator
Limiter Controls Overloads from Clipping
EZ-MXA20
20 Watt Stereo Audio Mixer Amplifier with Tone Controls
TYPICAL APPLICATION
The EZ-MXA20 is a stereo mixer amplifier with one mic and two line inputs. Bass and treble tone controls are included. An integral
compressor/limiter allows a higher sound output level without clipping than a standard amplifier. The outputs drive 4 or 8 ohm
speakers. The EZ-MXA20 is used in houses of worship, restaurants, clubs, meeting rooms and commercial sound systems.
Computer
MP3 Player
Microphone
EZ-MXA20
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24 V POWER INPUT
Insert plug from power
supply. Rotate 1/4 turn
clockwise to lock.
SPEAKER WIRING
Lift lever, insert wire.
Close lever to lock.
TONE CONTROLS
Adjust for desired sound without causing amplifier overload.
SPEAKER OUTPUTS
Connect a pair of 8 Ohm or 4 Ohm speakers to the LEFT SPKR and RIGHT SPKR terminals.
Connect the speaker “+” terminal to the amplifier “+” terminal. Connect the speaker “-”
terminal to the amplifier “-” terminal.
DO NOT GROUND ANY SPEAKER OUTPUT TERMINAL!
MICROPHONE INPUT
Connect a microphone to
the XLR jack. Microphone
may be either a dynamic
or condenser type.
LINE INPUTS
Connect a line-level source
to LINE IN 1 and/or 2.
OVERLOAD INDICATOR
LED flashes when the internal compression circuits are protecting the amplifier output
against overload. It is normal for this indicator to flash during high audio levels.
Reduce the input level if this indicator flashes excessively or stays on continuously.
POWER INDICATOR
Glows blue when the product is
connected to a valid power source.
MIC INPUT LEVEL
Adjust for the desired
microphone sound level.
LINE INPUT LEVELS
Adjust for the desired sound level
from the sources connected to
LINE IN 1 and 2.
PHANTOM SELECTOR
Set for mic type connected:
Dynamic mic: OFF (out)
Condenser mic: ON (in)
IMPEDANCE
SELECTOR
Set to match the
speakers connected:
8 Ohm: Button OUT
4 Ohm: Button IN
POWER CONNECTION FIXED MOUNTING RUBBER FEET ATTACHMENT
Insert Power Plug
Bottom View
of chassis
Recess
Screw
directly to flat
surface without
installing rubber feet.
Rotate 1/4-turn
clockwise to lock.
Rotate 1/4-turn
counter-clockwise
to unlock. Peel backing and stick the 4 rubber
feet to chassis in recesses provided.

EZ-RA6
EZ-CC6
SELECTED MOUNTING ACCESSORIES
TYPICAL PERFORMANCE
Rack Adapter for 6 Increments of 1/6 Rack Width
Component Chassis for 6 Increments of 1/6 Rack Width
EZ-UCB2
Under-Counter Brackets 1/6 or 1/3 Rack Width
Use In Place of Filler Panel
Holds Adapters and Cables
Mounts in EZ-CC6 and EZ-RA6
Complete accessory listing available at: rdlez.com
Copyright © 2013 Radio Design Labs, Inc. RDL, Radio Design Labs and the RDL logo are registered trademarks of Radio Design Labs, Inc. Data reflects product at publication time, subject to change without notice. “Made in USA” applies to all EZ products except power supplies.
Inputs (3): 1.2 kΩbalanced on XLR jack, mic-level, -55 dBu Min. (for 10 W out), -11 dBu max.(1);
> 10 kΩ, -10 dBV nominal on RCA jacks, -13 dBV Min. (for 10 W out), +22 dBV max. (2)
Gain: Off to 74 dB (mic), Off to 32 dB (line)
Outputs (2): Left and Right, 10 Watts RMS into 8 Ωper channel or 8 Watts RMS into 4 Ωper channel, switch-selectable output impedance
Equalization: ±10 dB @ 10 kHz, ±9 dB @ 80 Hz
Frequency Response: 50 Hz to 20 kHz (±1.5 dB, mic input, 10 Watts), 35 Hz to 20 kHz (±1.5 dB, line input, 10 Watts)
THD+N: < 0.25%
CMRR: > -55 dB (mic)
Crosstalk: < -68 dB (1 kHz, line input)
Phantom: S witch-selectable 24 V (IEC 61938: 2013)
Noise: < -70 dB (below 10 Watts, -10 dBV line input), < -65 dB (below 10 Watts, -50 dBu mic input)
24 Vdc power supply current: 170 mA (idle), 1000 mA (max.)
Power supply input voltage: 100 to 240 VAC
Warranty: 3 Years; contact RDL technical support department for assistance
Case dimensions: 5.75” (14.6 cm)W x 5” (12.7 cm)D
Mounting size: 1/3 rack width
891-1505
EZ-DC2
EZ-SMB2
TYPICAL PERFORMANCE
Desktop Chassis 1/3 Rack Width
EZ-UCB2
Under-Counter Brackets 1/6 or 1/3 Rack Width
Surface Mount Bezel for 1/3 Rack Width Products
EZ-SD2
Storage Drawer 1/3 Rack Width
Copyright © 2009 Radio Design Labs, Inc. RDL, Radio Design Labs and the RDL logo are registered trademarks of Radio Design Labs, Inc. Data reflects product at publication time, subject to change without notice. “Made in USA” applies to all EZ products except power supplies.