EM Acoustics MSE-156 passive fullrange loudspeaker User Manual
Page 10
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MSE-159/MSE-156 User Manual
www.emacoustics.co.uk
E-H are used for up-tilt. Hole A is used for 0-degree angle, and also for multiples of 20 degrees above this (20, 40,
60, 80 degree down-angle). Hole B is used for 10 degrees, and multiples of 20 degrees above this (10, 30, 50, 70,
90 degree down angle). Similarly, Hole C is used for 5 degrees and multiples of 20 degrees above this (5, 25, 45,
65, 85) and Hole D is used for 15 degrees and multiples of 20 degrees above (15, 35, 55, 75). Holes E-H apply in
a similar way for up-tilt.
Attachment of the VFA-159 variable flying bracket
To attach the bracket, first release the two ball-lock pins from
the base of the bracket. Position the bracket over the top or
bottom of the loudspeaker (it can be flown either way up) and
insert the bosses on the bottom of the bracket into the keyholes
on the enclosure’s flying plate. Slide the bracket to the rear of
the enclosure until the two ¼” diameter locking-pin holes line
up. Insert the two ball-lock pins into the holes to lock the
bracket in place. IMPORTANT: DO NOT ATTEMPT TO LIFT
THE LOUDSPEAKER WITHOUT BOTH BALL-LOCK PINS
IN PLACE. Finally, attach a hook-clamp to the sliding mounting
point and secure the mounting point bolt through the main
section of the VFA-159 bracket.
The VFA-159 bracket works on the centre of gravity of the MSE-159. The lone hole in the centre of the VFA
bracket will mean the MSE-159 enclosure will hang level. Moving the pickup point to the rear of the enclosure will
add down-tilt, and moving to the front of the enclosure will apply up-tilt. Each notch represents 5-degrees of
angle, so by taking the weight of the loudspeaker the angle can easily be changed. The VFA-159 will allow a
maximum of 25 degrees of up-tilt and 30 degrees of down-tilt. For more extreme down-tilt angles, select the
rearmost notch and use the M8 point on the rear of the enclosure as a pull-back.
Ensure that an eyebolt is secured to the rear point on the MSE-159/MSE-156 (M8 at the rear) or one of the top
points (M10 on top or bottom) to use as a secondary safety.