HK Audio CDR 210 F - Manual (Page 35)

35
D
manual to learn more about how to do this.
Before you can procedure further, you must first
connect to the amp racks the DFCs' remote line
and all of the system's audio cords.
14.3 Checking Individual Mid/
High Cabinets
The best method of checking cabinets is to play
a familiar song on a CD, routing the signal into
the mixer and out via the master channel. Set the
master level to a low-to-medium setting.
• Turn up the channel's gain knob. You will
hear the signal rendered by the array's two
top mid/high cabinets. The display of the DFC
assigned to this pair should indicate an incoming
signal level.
Important:
If you are located outside the high frequency signal's
directivity radius, you will not be able to hear this
signal! Your best bet is to perform this system check
with a helper position a suitable distance from the
array.
Note: If you can see the bottom of the mid/high
unit as a plane surface, you are outside
its directivity radius!
• Turn the channel 1 gain knob back down after
hearing the signal!
• Follow the same procedure for all other power
amp channels that you want to use.
Be sure to turn the gain knob down after each
successful test!
Note:
With this procedure, you are checking mid/high
cabinets in descending order; that is, from the
top to the bottom. A cabinet's height affects its
directivity, so the lower the cabinets, the closer
the listener should move in towards the array.
• Follow the same procedure for the subwoofers.
• Once you have checked all cabinets successfully,
turn up all gain knobs, one after the other.
• Start with the channel 1 gain knob for the two top
mid/high units, and then turn up the channel 2
gain knob, and so forth. With every additional
channel that you activate, you should hear a boost
in low midrange response. If not, this may be due
to a phase inversion in the NF (or in extreme cases,
in the speaker cords)! Also check the PB 5's phase
switch again.
• Proceed in the same manner for the subwoofer
channels.
14.4 Configuring the Control-
ler Network with the Audio
Controller Software
Once you have performed these tests, you can
configure the controller network. The type and size
of the configuration of course depends on the given
sound reinforcement task (PA left/right, center,
outfills, etc.)
Read the chapter G about the DFC software in the
manual to learn more about networking controllers,
creating groups and setting delays and levels.
15. Disassembling and
Removing the System
As the saying goes: To disassemble the system,
proceed in the reverse order of assembly.
These ten tips should make the job of dismantling
the mid/high array easier:
1. Lower the array until the caster-equipped bottom
of the mid/high case fits under it.
2. Engage the motor or chain hoist to relax the ten-
sion on the strap that is curving the array.
Caution: The array may belly out towards the
front!
3. Disconnect the four lower cabinets' cords.
4. Set these cabinets' curving pins to the maximum
angle! This ensures that the array will not buckle
quite as drastically when lowering and setting
it on the bottom of the case. This also makes it
easier to dismantle the four-cabinet block.
5. Remove the lower rigging frame.
6. Always insert the front pins into the rigging
connector receptacles to ensure that they are not
damaged or torn off when the array is lowered
onto the case!
7. Adjust the angle of the mid/high case's bottom.
Set it to 0° if the lower cabinet of the four-cabinet
block is a CDR 208 S, and to 4.5º if it is a
CDR 208 T.
8. Carefully lower the array into the case. First re-
move the rear pin connecting the two mid/high
units. Then remove both front pins and place
them in the recessed grips so they're out of your
way and out of harm's way.
9. Raise the array slightly so that the lower four-bin
block can be rolled away.
10. Do not leave the connector component of the
rear rigging rail (which is now on the top ca-
binet of the four-bin block in the case) extended!
Remove the pin that sets the curving angle,
fold down the connector component, and insert
the pin through the connector component and
eyelet.
Rigging and Curving COHEDRA ® System