User manual

9
MSE-118 Quake 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.
MSE-118: Low Frequency Drive Unit
1. Using a 4mm Allen key, remove the 20 screws holding the access door in place.
2. Using a 6mm Allen key, remove the six M8 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. Carefully disconnect
the cables from the drive unit, observing the polarity.
3. Gently lift the drive unit up and clear of its locating hole – please take care as it is extremely heavy!
4. To reinstate the driver, simply reverse the above procedure. Please observe the correct polarity – the black-
striped cable to negative terminal.
5. Before reinstating the access door, check the condition of the sealing gasket around the door. Replacement
gasket can be obtained from your EM Acoustics representative if required. Position the door in place and
retighten the screws.
MSE-118: Grille replacement
1. Using a PZ2 screwdriver, remove the screws holding the grille in place.
2. Use a flat blade screwdriver to ease the grille out of one side slot, and then lift the grille clear.
3. To reinstate the grille, insert it into one side slot, gently curve the grille to ease into the other side. Replace
and retighten all screws.
MSE-118: Regular Service
Under high-SPL use, the drive unit in the MSE-118 is so powerful it can cause the bolts securing it in place to work
loose. It is suggested that a regular check of bolt tightness every six months will ensure your MSE-118
subwoofers perform to the best of their ability at all times.