EM Acoustics M-10 compact passive stage monitor - Manual (Page 7)

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M-10 User Manual
www.emacoustics.co.uk
MAINTENANCE
Your EM Acoustics loudspeakers have been rigorously tested before they leave our factory, to ensure that they give
you a lifetime of flawless operation. Should any of your drive units fail and need replacing, please follow the
guidelines below.
M-10: Low Frequency Drive Unit
1. Using a PZ2 screwdriver, undo the three countersunk machine screws on each side of the loudspeaker by the
grille edge – this will allow you to remove the front grille.
2. Using a 4mm Allen key, remove the eight M5 socket-head bolts holding the drive unit in place, and keep them
safe – ensuring you have collected both the shake-proof and flat washers for each bolt. Gently lift the drive
unit out of its locating hole. You may find you need to insert a flat bladed screwdriver between the drive unit
and recess to aid in lifting it out. Carefully disconnect the cables from the drive unit.
3. To reinstate the driver, simply reverse the above procedure. Please observe the correct polarity – red cable to
positive terminal, black cable to negative.
4. Reinstate the grille by positioning it in place and gently pressing it into position. The badge on the grille
should sit over the 10” drive unit. Once the grille is in position, replace the six bolts finger-tight, before
tightening again with a PZ2 screwdriver.
M-10: High Frequency Drive Unit
1. Using a PZ2 screwdriver, undo the three countersunk machine screws on each side of the loudspeaker by the
grille edge – this will allow you to remove the front grille.
2. Using a 3mm Allen key, undo the four countersunk bolts holding the HF waveguide in place. Once these are
removed, gently lift the waveguide out of the enclosure. Disconnect the cables and the drive unit is now free
to be removed.
3. To remove the drive unit from the waveguide, undo the two nuts that attach the drive unit to the waveguide
using a 10mm spanner.
4. To reinstate the drive unit, reconnect the cables (white cable to positive terminal, yellow cable to negative)
and carefully replace the waveguide into its hole. Retighten the mounting bolts.
5. Reinstate the grille by positioning it in place and gently pressing it into position. The badge on the grille
should sit over the 10” drive unit. Once the grille is in position, replace the six bolts finger-tight, before
tightening again with a PZ2 screwdriver.