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 XA1900THX  

 

Certified as a THX Ultra2 front/rear, the XA1900THX deploys the components of the award 
winning Snell XA90ps in a space efficient enclosure designed for building into cabinets.  
Unique switches correct the response changes caused by cabinet boundaries and acoustically 
transparent screens. Intended as L/C/R channels both for home  theaters and for multichannel 
music system’s, the XA 1900THX features a three-driver e

X

panding 

A

rray (XA) of dual 2½-

inch midranges and a 1-inch aluminum dome tweeter.  This unique driver/crossover 
innovation gives a broad and lobe free vertical directivity, for a natural and “airy” soundstage.  
Furthermore, its controlled dispersion pattern and special tuning options compensate for 
unpredictable room acoustics and boundary interactions.   Using this array coupled with two 
8-inch high-output woofers, the XA 1900THX is capable of tremendous output, providing 
effortless, powerful sound to below 50 Hz.  Every XA 1900THX is assembled by hand and 
individually calibrated, assuring performance to within 0.5dB of its reference standard. 

 
XA1900THX Crossover Controls 
 
 Setting the Bass Level (Input cup, far left switch) 
  
 Freestanding placement. 
 Set the Bass level switch to Normal 
 Boundary placement (For situations where the XA1900 is placed inside an a/v 
 cabinet) 
 Set the Bass level switch to Boundary 
 
 Setting the Treble Level (Input cup, center switch) 
 The treble level control contours the “brightness” of the XA Tower.  

Set the switch to “+” to increase the high-frequency output in situations where 

the XA1900 THX sounds dull 
Set the switch to “-“ when the XA1900THX is overly bright, especially in highly 
reflective rooms.  Turn the high-frequency output 

 
 Setting the Perforated screen (Input cup, far right switch) 
 

The XA1900THX provides compensation for the naturally occurring attenuation of 
a speaker placed behind a perforated screen.  When the speaker is behind a 
screen, set the Perf Screen to “With Screen” 

 

In applications that do not utilize a perforated screen, set the control to “No 
screen” 

IMPORTANT: The Perforated screen “With Screen” setting overrides any other 
treble level adjustment.  Therefore, no “+” or “-“ adjustments to treble level are 
possible while the speaker is in this setting.  To Adjust Treble Level, please be 
certain to set the Perf Screen to “No Screen”. 

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