Crown Audio Stereo Amplifier XLS 402TX User Manual

X L S T X S E R I E S  
XLS 402TX  
he XLSTX Series of power amplifiers from  
Crown represents a new era in affordable,  
quality power amplification. The line con-  
sists of three models in a uniform, rugged  
chassis, incorporating the best of tried-and-  
true design principles and innovative features.  
Features  
T
THX-approved.  
Electronically balanced XLR inputs and  
binding post outputs (export models feature  
touch-proof binding post outputs).  
Simple, reliable design incorporates many  
popular features.  
XLSTX Series amplifiers are professional stereo  
power amplifiers engineered to meet demand-  
ing audio requirements—reliably and within  
budget. They are THX®-approved.* Plus, every  
XLSTX Series amplifier is backed by Crown’s  
unequaled Three-Year, No-Fault, Fully-Trans-  
ferable Warranty.  
Features precision detented level controls,  
power switch, and four LEDs, which indi-  
cate clip for each channel, power and fault  
conditions.  
Selectable high-pass filter on each channel  
enables amplifier to work more efficiently  
when full band-width is not required.  
Pair of linear optocoupler clip limiters pro-  
tects loudspeakers from being overdriven.  
Three-Year, No-Fault, Fully-Transferable  
Warranty completely protects your invest-  
ment and guarantees its specifications.  
Housed in a rugged, all-steel 3U chassis.  
With over five decades of experience designing  
and building rock-solid products, Crown is the  
standard in amp technology. So check out the  
affordable, Crown XLSTX Series. They are a  
powerful argument for quality and value!  
Efficient forced-air fan prevents excessive  
thermal buildup.  
Damping Factor (8 ohm) 10 Hz to 400 Hz: >200.  
Crosstalk (below rated power)  
at 1 kHz: –82 dB.  
Controls  
For more details about the XLSTX Series, con-  
tact the Crown Technical Support Group at  
800-342-6939 or 574-294-8200. Also, visit the  
Level: Two front-panel rotary level controls,  
one for each channel. Blanking plugs cover  
the level controls to prevent tampering.  
at 20 kHz: –58 dB.  
Power: Front-panel switch; on when in the UP  
position.  
Voltage Gain (at maximum output): 31 dB.  
Specifications  
Filter Switches: One per channel; three-posi-  
tion back-panel switches set the internal high-  
pass filter frequency. Frequency setting is 30  
Hz when switch is in left position; 15 Hz when  
switch is centered; and bypassed when switch is  
in right position.  
The following applies to units in Stereo mode with 8-ohm loads  
and rated input sensitivity unless otherwise specified.  
Power  
Output Power:  
Performance  
Sensitivity (volts RMS) for full rated power at  
4 ohms: 1.025.  
TX  
Limiter Switch: Back-panel switch offers loud-  
speaker protection against moderate amplifier  
clip when set to the “IN” position.  
Frequency Response (at 1 watt) 20 Hz to 20  
kHz: 0.75 dB.  
Fuse: Provides overload protection.  
Phase Response (degrees at 1 watt)  
at 10 Hz: –10.  
Indicators  
at 20 kHz: +19.  
Clip: Two front-panel red LEDs, one for each  
channel, illuminate when the channel’s output  
signal is being overdriven.  
Signal-to-Noise Ratio (20 Hz to 20 kHz)  
A-weighted, below rated power: > 100 dB.  
No weighting, below rated power: > 97 dB.  
Load Impedance: Safe with all types of loads.  
Rated for 2 to 8 ohms.  
Power: Green front-panel LED indicates  
amplifier has been turned on and AC power  
is available.  
AC Line Voltage and Frequency Configura-  
tions Available ( 10%): 120 VAC/60Hz and  
230 VAC/50 Hz.  
Total Harmonic Distortion (THD) at full band-  
width power, from 20 Hz to 1 kHz: < 0.15%.  
Fault: Yellow front-panel LED illuminates when  
amplifier is in protect mode. Also illuminates  
briefly during normal power-up when amplifier  
is first switched on.  
Intermodulation Distortion (IMD): (60 Hz and  
7 kHz at 4:1) from full rated output to –40 dB:  
< 0.3%.  
* THX is a registered trademark of THX Ltd.  
 

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