Amplification - Krix MX-10 Installation Manual

To deliver Dolby® reference sound pressure
levels (SPL) in the home cinema, three main
design elements are critical to this outcome.
The size of the room, the sensitivity of
the speakers and the power output of the
amplifiers.
The Series MX speakers and subwoofers
have much higher sensitivity than typical hi-
fi speakers. This means that the amplifier
power requirements are not excessive, even
when installed in larger than average room
sizes.
The nominal impedance of each of the main speakers are 8 Ω.
Depending on your room size, the following minimum amplification per channel is recommended.
SYSTEM
MX-10
Each MX-10 main speaker has a continuous power handling of 250 Watts per channel.
It is recommended that each MX-10 subwoofer should be powered by 400 - 500 Watts. To avoid damage to the subwoofer drivers,
it is recommended to not exceed 500 Watts.
The nominal impedance of each Subwoofer is 4 Ω.
Below is a table of amplifier recommendations. See Figure 15 for example diagrams on the appropriate wiring configuration.
SYSTEM
Impedance
Channels x Watts
Wiring method

AMPLIFICATION

When used in a room of recommended size,
the MX-10 main speakers can be powered
successfully with a mid to top tier AV receiver.
As the subwoofers in the Series MX
systems are passive (not self-powered), an
independent power amplifier, connected
to the LFE channel(s) of the AV receiver/
processor, is required.
For best results with all MX series subwoofers,
it is strongly suggested that a professional
style power amplifier is employed which
has a selectable output limiter and high-
pass filtering options. For more information
regarding the configuration of these options,
see the Equalisation section on Page 14.
MX MAIN SPEAKER AMPLIFIER POWER
ROOM SIZE
4 m 13 ft
5 m 16 ft
6 m 20 ft
MX SUBWOOFER SPEAKER AMPLIFIER POWER
MX-10
2 Ω 4 Ω
1 x 1000 W 2 x 500 W
Parallel Single
Channel
7
Each MX-10 subwoofer has a rated power
handling capacity of 500 Watts (W) into 4
Ohms (Ω).
To avoid damage to the drivers it is
recommend to drive each subwoofer with
500W of power or less.
A suitable example to power the 2 x MX-10
subwoofers is a Yamaha PX3 amplifier rated
at 2 x 500 Watts into 4 Ω.
Below are two tables that outline the
recommended amplifier power for each
Series MX model. This will provide cinema
Dolby ATMOS® reference levels (105dB
mains, 115dB LFE).
WATTS PER CHANNEL
50 W
70 W
100 W
8 Ω
1 x 1000 W
Series