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
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
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
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: tech@earthquakesound.com
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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