Earthquake Sound Stereo Amplifier XJ 300R User Manual

USER’S MANUAL  
Earthquake Sound reserves the right to amend details of the specifications without notice.  
© Copyright Earthquake Sound Corporation  
Earthquake Sound Corporation  
2727 McCone Avenue, Hayward CA, 94545  
Phone: (510) 732-1000 U.S. Toll Free: (800) 579-7944 Fax: (510) 732-1095  
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FEATURES  
Driving an  
In-Wall SUB10?  
If the LED light is:  
red = amplifier is in auto mode  
If you are using the XJ-300R to drive a  
subwoofer (including Earthquake’s THOR  
In-Wall SUB10), then you will need to set the  
crossover below 100Hz.  
green = amplifier is sensing signal  
amplifier is on  
If you have a large subwoofer such as a 12”,  
15”, or even 18”, then you will have a great  
response with the crossover set to the 12  
o’clock setting or minimum setting.  
For use with a 8” or 10” subwoofer, you will  
find the 12 o’clock and 2 o’clock setting to be  
the best range.  
auto music sensing setting:  
amplifier automatically turns on  
when music is on- if the music is  
not on for 20 min., the amplifier  
goes into sleep mode.  
Driving a Q10B  
or a MQB-1?  
comes with 1 pair of mounting ears  
to fit into a rack (takes 1 rack space)  
comes with rubber  
legs for shelf option  
amplified output  
to your IW-SUB10  
or your tactile  
Do not use high level input  
with bridged amp  
Note that the high level input  
stage on the XJ300R has a  
common mode ground.  
Therefore, you cannot use a  
bridge mode amplifier as a  
high level input.  
110V/220V switch  
5
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XJ-300R with MQB-1  
XJ-300R with Q10B  
MQB-1  
4-Ohm Parallel  
Application  
Q10B  
8-Ohm  
Application  
MQB-1  
8-Ohm Standard  
Application  
6
7
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XJ-300R with THOR IW-SUB10  
THOR  
4-Ohm Standard  
Application  
Specifications  
Frequency Response  
28Hz - 175Hz  
Power Line Voltage  
110-120C ~ AC/60Hz/180W  
(220 option)  
Dimensions (HxWxD)  
2” x 9” x 9”  
Weight  
Input Sensitivity For Full Output  
240mVrms from left input with volume  
control at 0dB, 90mVrms with volume  
control fully clockwise.  
Input Impedance  
8.2 kilo-ohm line-level inputs  
PRODUCT SUPPORT  
Please contact Earthquake Sound Technical Support Department for questions regarding any of  
the products mentioned in this manual.  
32-ohm speaker-level inputs  
Internal System Gain  
Earthquake Sound Corporation  
(800) 576-7944 or (510) 732-1000, 9:00am - 5:00pm Mon-Fri, Pacific Time  
Email us at: [email protected]  
4.5 lbs  
Finish  
Black  
42dB from left input jack to speaker with the  
Bass Level control at 0dB, 54dB with the  
control full clockwise  
Output Power into 4 ohm load 280 WRMS  
Output Power into 8 ohm load 140 WRMS  
8
9
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