Monoprice 24456, 24458, 24457 User Manual
MONOPRICE
Monolith THX Subwoofer
P/Ns 24456, 24457, 24458
User's Manual
CONTENTS
SAFETY WARNINGS AND GUIDELINES ....................................................................................................................................... 3
CUSTOMER SERVICE .................................................................................................................................................................................... 4
PACKAGE CONTENTS ................................................................................................................................................................................. 5
PRODUCT OVERVIEW ................................................................................................................................................................................. 5
SETUP GUIDE ...................................................................................................................................................................................................... 7
Subwoofer Placement ......................................................................................................................................................................... 8
Connecting to a Balanced XLR Output ................................................................................................................................ 8
Connecting to a Subwoofer/LFE Output ........................................................................................................................... 9
Connecting to a Stereo Preamp Output ........................................................................................................................... 10
TECHNICAL SUPPORT ................................................................................................................................................................................ 11
TROUBLESHOOTING ................................................................................................................................................................................... 11
SPECIFICATIONS ............................................................................................................................................................................................ 12
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SAFETY WARNINGS AND GUIDELINES
Please read this entire manual before using this device, paying extra attention to these
safety warnings and guidelines. Please keep this manual in a safe place for future reference.
This device is intended for indoor use only.
Do not expose this device to water or moisture of any kind. Do not place drinks or
other containers with moisture on or near the device. If moisture does get in or on
the device, immediately unplug it from the power outlet and allow it to fully dry
before reapplying power.
Do not touch the device, the power cord, or any other connected cables with wet
hands.
If operating this subwoofer in a humid environment, ensure that no condensation
occurs. Condensation could cause damage to the speaker cone and could cause a
short in the subwoofer's amplifier, which in turn could cause fire or severe electric
shock.
Do not subject the product to extreme force, shock, or fluctuations in temperature
or humidity.
Do not expose this device to excessively high temperatures. Do not place it in, on,
or near heat sources, such as a fireplace, stove, radiator, etc. Do not leave it in direct
sunlight.
Do not place or install this device in an area where it can be exposed to excessive
amounts of dust, humidity, oil, smoke, or combustible vapors.
Prior to operation, check the unit and power cord for physical damage. Do not use if
physical damage has occurred.
Before plugging the unit into a power outlet, ensure that the outlet provides the
same type and level of power required by the device.
This device uses a grounded power cord and requires a ground connection for safe
operation. Ensure that the power source has a proper ground connection. Do not
modify the plug or use a "cheater" plug to bypass the ground connection.
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Disconnect the unit from the power source when replacing the fuse. Replace the
fuse only with the same type.
Unplug this device from the power source when not in use.
Take care to prevent damage to the power cord. Do not allow it to become
crimped, pinched, walked on, or become tangled with other cords. Ensure that the
power cord does not present a tripping hazard.
Never unplug the unit by pulling on the power cord. Always grasp the connector
head or adapter body.
Ensure that power is turned off and disconnected before making any electrical
connections.
Clean using a soft, dry cloth only. Do not use chemical cleaners, solvents, or
detergents. For stubborn deposits, moisten the cloth with warm water.
This device has no user serviceable parts. Do not attempt to open, service, or
modify this device.
CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to ensuring that your ordering,
purchasing, and delivery experience is second to none. If you have any problem with your
order, please give us an opportunity to make it right. You can contact a Monoprice
Customer Service representative through the Live Chat link on our website
www.monoprice.com during normal business hours (Mon-Fri: 5am-7pm PT, Sat-Sun: 9am-
6pm PT) or via email at support@monoprice.com
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PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below. If anything is missing or damaged, please contact Monoprice Customer Service for a
replacement.
1x Monolith subwoofer
1x AC power cable
PRODUCT OVERVIEW
CROSSOVER: Use the CROSSOVER knob to adjust the upper limit of the subwoofer's
frequency response from 40 to 160 Hz. The subwoofer will output only those
frequencies below the set level. You should set the crossover frequency to obtain a
smooth and seamless transition from the subwoofer to the main speakers in your
system. If your main speakers are smaller units with limited low frequency output,
start with a higher frequency, such as in the 100-150 Hz range. With larger speakers
that have greater low frequency output, you might start with this control set lower,
such as in the 60-100 Hz range.
PHASE: This control allows you to alter the phase of the subwoofer's output signal from 0°
- 180° to correct for a possible mismatch in phase, which results in cancellation
between the subwoofer and your main speakers. To adjust the PHASE, listen to the
system with music playing and tune between 0° and 180° while listening for a
change in mid-bass output. The correct position will have a higher amount of
apparent mid-bass output.
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