EM Acoustics MSE-118 Quake horn loaded subwoofer - Manual (Page 5)

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MSE-118 Quake User Manual
www.emacoustics.co.uk
SYSTEM SETUP
Professional loudspeaker systems are potentially dangerous objects if used incorrectly. Please ensure that you
read this section fully, and contact EM Acoustics or your local dealer should you be in any doubt over correct
operation procedures.
Professional loudspeaker systems are capable of producing damage-inducing sound pressure levels, and hence
care should be taken when setting your system up, particularly when it comes to loudspeaker placement within a
venue. Damage to the ear can result from levels above 90dB under prolonged exposure.
Cabling and Amplifier Selection
The MSE-118 Quake subwoofer is designed to be used with professional power amplifiers providing the following
power outputs:
MSE-118 1600W/channel into eight ohms
It is good practice to use an amplifier equal to the program power rating of the loudspeaker – so as to retain
sufficient headroom and good dynamic range. Care should be taken during operation to avoid amplifier clipping –
as this can cause serious damage to your loudspeakers. If in doubt, please contact your dealer who will be happy
to assist you in correct amplifier choice and setup.
Cabling
Quake enclosures are supplied with Neutrik Speakon TM NL4 connectors (unless otherwise specified), wired pin
1+/1-. It is recommended that the resistance of your cable is less than one tenth of the nominal system
impedance. Given below are the recommended maximum cable lengths for different cross-sections and
impedances.
Conductor Cross Sectional Area Maximum Recommended Cable Length
4 ohms 8 ohms 16 ohms
1.0mm 2 11m 22m 44m
1.5mm 2 17m 34m 68m
2.0mm 2 22m 44m 88m
2.5mm 2 29m 58m 116m
4.0mm 2 44m 88m 176m
6.0mm 2 66m 132m 264m
A small power amplifier working too hard is more likely to damage a loudspeaker than a large power amplifier
working within its operating range!