EM Acoustics EMS-81 compact passive loudspeaker - Manual (Page 18)

18
EMS Series User Manual
www.emacoustics.co.uk
EMS-121: Low Frequency Drive Unit
1. Carefully insert a flat bladed screwdriver between the grille and the top of the enclosure, and gently lever the
grille upwards. This will ease the grille out of its locating slots along the side of the enclosure, revealing the
drive units. Ensure to approach the grille at the top of the enclosure as this will prevent the risk of the
screwdriver damaging the LF drive unit.
2. Using a 5mm Allen key, remove the eight M6 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 – please take care as it is heavy! 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 easing into one side slot, then gently applying a curve to the grille to ease it into the
other side.
EMS-121: High Frequency Drive Unit
1. Carefully insert a flat bladed screwdriver between the grille and the top of the enclosure, and gently lever the
grille upwards. This will ease the grille out of its locating slots along the side of the enclosure, revealing the
drive units. Ensure to approach the grille at the top of the enclosure as this will prevent the risk of the
screwdriver damaging the LF drive unit.
2. Using a 5mm Allen key, remove the four M6 socket-head bolts holding the HF waveguide in place, and as
above put them to one side and ensure you have all the washers. Lift the waveguide out of the mounting hole
and disconnect the cables.
3. To remove the drive unit, undo the three M5 hex head bolts that attach the drive unit to the waveguide using
an 8mm spanner.
4. To reinstate the drive unit, reattach the M5 hex head bolts and retighten. Reconnect the cables (white cable
to positive terminal, yellow cable to negative) and reposition the waveguide in the mounting hole before
reinstating the four M6 socket-head bolts.
5. Reinstate the grille by easing into one side slot, then gently applying a curve to the grille to ease it into the
other side.