JL Audio MBT-CRX User Manual
Weatherproof Bluetooth® Controller / Receiver
Product Description
The MBT-CRX is a water-resistant (IPX6 rated)
Bluetooth® receiver designed for marine and
powersports applications. It can be used as a
stand-alone Bluetooth® source unit/receiver,
connecting directly to an amplifier. It can also
be used as an add-on Bluetooth® controller/
receiver, connected to an existing head unit’s
line-level/auxiliary inputs. The MBT-CRX is not
designed to drive loudspeakers directly.
Bluetooth® receiver designed for marine and
powersports applications. It can be used as a
stand-alone Bluetooth® source unit/receiver,
connecting directly to an amplifier. It can also
be used as an add-on Bluetooth® controller/
receiver, connected to an existing head unit’s
line-level/auxiliary inputs. The MBT-CRX is not
designed to drive loudspeakers directly.
What’s Included
(1) MBT-CRX Bluetooth controller/receiver
(1) Threaded fastening collar
(1) Thin round gasket
(1) Thick round gasket
(1) Square adaptor plate
(1) Square adaptor gasket
(4) Stainless steel mounting screws
(1) User Manual
(1) Threaded fastening collar
(1) Thin round gasket
(1) Thick round gasket
(1) Square adaptor plate
(1) Square adaptor gasket
(4) Stainless steel mounting screws
(1) User Manual
Installation Applications
This product is designed for operation in
12 volt, negative-ground electrical systems.
Using this product in systems with positive
ground and/or voltages other than 12 volts
may result in damage to the product and
will void the warranty. This product is not
certified or approved for use in aircraft.
12 volt, negative-ground electrical systems.
Using this product in systems with positive
ground and/or voltages other than 12 volts
may result in damage to the product and
will void the warranty. This product is not
certified or approved for use in aircraft.
Safety Considerations
• Whenever possible, mount this product
in a dry, well-ventilated location that does
not interfere with other factory installed
electronic devices. If a dry environment is
not available, a location that is not exposed
to heavy splashing may be used.
not interfere with other factory installed
electronic devices. If a dry environment is
not available, a location that is not exposed
to heavy splashing may be used.
• While this product is designed to be water-
resistant, it should never be submerged
under water or subjected to high-pressure
water spray.
under water or subjected to high-pressure
water spray.
• Do not mount in an engine compartment
or in any areas of extreme heat.
• Ensure this product is securely installed so
that it does not come loose in the event of a
collision/sudden jolt or as a result of repeated
vibrations during normal operation.
collision/sudden jolt or as a result of repeated
vibrations during normal operation.
• Check before drilling to make sure that you
will not be drilling into an exterior panel/
hull, fuel tank, gas/brake line, wiring harness,
or other vital system.
hull, fuel tank, gas/brake line, wiring harness,
or other vital system.
• Do not run system wiring outside or
underneath the vehicle/vessel. This is an
extremely dangerous practice, which can
result in severe damage/injury.
extremely dangerous practice, which can
result in severe damage/injury.
• Protect all system wires from sharp
edges (metal, fiberglass, etc.) by carefully
routing them, tying them down and using
grommets and loom where appropriate.
routing them, tying them down and using
grommets and loom where appropriate.
• Secure all wiring as needed, using cable
ties or wire clamps to protect them from
moving parts and sharp edges.
moving parts and sharp edges.
• Do not replace the power wire fuse with one
of a different value. Never bypass the fuse.
Mounting & Installation
The design of the MBT-CRX requires just
a single hole for installation. Its easy-to-
use threaded-collar mounting system can
accommodate installations in flat surfaces up
to 1.75 inches (4.5 cm) thick. A front-mounted
adaptor plate is included for installations in
panels exceeding 1.75 inches (4.5 cm) thick,
or where rear access is limited or not possible.
Refer to the diagrams below for your specific
mounting application.
a single hole for installation. Its easy-to-
use threaded-collar mounting system can
accommodate installations in flat surfaces up
to 1.75 inches (4.5 cm) thick. A front-mounted
adaptor plate is included for installations in
panels exceeding 1.75 inches (4.5 cm) thick,
or where rear access is limited or not possible.
Refer to the diagrams below for your specific
mounting application.
Standard Collar-Mount Installation
Front-Mount Adaptor Installation
IPX6
WATER
RESISTANT
FCC ID:2AD9EMBT-CRX