Celsus MRA-470D Quick Start Manual

MRA-470D
IPX7 4 Channel Marine-Grade Micro Digital Amplifier
The MRA-470D is a state-of-the-art amplifier designed to deliver
great performance from a small 203 x 89mm/ 8" x 3.5" footprint.
This 4 channel full-range class D amplifier benefits from an IPX7
waterproof rating ensuring that it is suited to the harsh marine
environment, optimised for a boat, jet-ski or off-vehicle application.
MRA-470D boasts fully variable high pass and low pass crossovers
enabling it to drive loudspeakers in a variety of configurations. A
versatile and powerful amplifier to sit at the heart of your high-end
audio system.
In the box

MRA-470D Amplifier

Waterproof DIN > RCA adaptor cable

Power cable & 40A fuse

Mounting Screws
Read this document in full before proceeding with installation.
Installation should only be performed by an experienced and
qualified technician.
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Owner's Manual & Set-up Guidance
Specification
Power output at 4Ω - 70W x 4
Power output at 2Ω - 90W x 4
Power output at 4Ω Bridged - 200W x 2
Size L x W x H: 20.3 x 8.9 x 3.8cm (8 x 3.5 x 1.5")
Colour
Red
Black
Blue
Speaker Outputs
Green/Black
Green
Purple Rear Right +
Purple/Black Rear Right -
White/Black
White
Grey Front Right +
Grey/ Black Front Right -
RCA Adaptor
Phono Cable
Yellow +12v (
Max Current draw 300mA)
Blue
Black
*** Wiring configuration diagram overleaf ***
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Function Connection
+ 12v Input
Ground Input
Remote: Do Not Connect
Rear Left - Output
Rear Left + Output
Output
Output
Front Left -
Output
Front Left +
Output
Output
Output
Signal Input
Output
Remote
Input
Ground
Output