EM Acoustics X3-DFSP self-powered downfill element - Manual (Page 23)

Page 23 of 36
X3-SP User Manual
v1.0 May 2012
5.4 – Adding X3-DF downfill elements
The X3-DF and X3-DFSP are designed to swiftly, securely and safely mount below flown
X3 arrays to add additional vertical coverage to the system.
IMPORTANT NOTE: This procedure should be carried out by THREE people –
two to handle the X3-DF enclosure, and one to stabilize the flown X3 array.
The X3-DF has two rigging plates which secure it to the underside of the X3 enclosure.
On each of these plates are mushroom bosses – two on the front plate (Item 1) and one
on the rear plate (Item 2). The rear plate also includes the two ball-lock pins to secure
the X3-DF in place.
These bosses secure into the keyhole holes in the rigging plates on the underside of the
X3 enclosure. X3-DF enclosures should be installed from the FRONT of the array.
Step 1 – Prepare the X3-DF
Position the X3-DF at the front of
the flown array, in front of the
enclosure you wish to mount it
below. The person at the rear of
the array should remove the two
ball-lock pins from the back of the
X3-DF to ensure it is ready to be
installed (Item 3).