dbx AFS224 Manual - Manual (Page 7)

3
AFS
™
224
AFS™ 224 User Manual
and the proprietary, precision AFS filters remove only a fraction of the frequency spectrum. The following
graph shows a comparison between AFS filters, the filters available in other feedback eliminators, and
conventional graphic EQ filters:
Competitor’s
Feedback
Elimination
1/3 Octave EQ
dbx AFS™
For more information regarding dbx Advanced Feedback Suppression (AFS™) technology, please refer to
the white paper available online at: www.dbxpro.com.
Installation Recommendations
FOR RACK MOUNT USE ONLY – Install the AFS 224 in a standard-width rack with the provided
rack screws. When installed in a rack, the unit should be positioned with enough room (at least 1U above
the unit and 1U below the unit) to allow proper ventilation. The AFS 224 should not be mounted above
or below anything that generates excessive heat. Ambient temperatures should not exceed 113
0 F (45 0 C)
when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic
interference, extremely high fields of RF and EMI should be avoided where possible.
Connection Recommendations
The AFS 224 has balanced inputs and outputs that can be used with any balanced or unbalanced line-level
device.
To connect the AFS 224 to your sound system, refer to the following steps:
• Turn off all equipment before making connections.
• Make audio connections via XLR or 1/4” TRS connectors according to application
needs. Both types of connectors for the inputs and outputs can be used for balanced or
unbalanced connections. The use of more than one connector at a time for the inputs could
unbalance balanced lines, cause phase cancellation, short a conductor to ground, or cause
damage to other equipment connected to the AFS 224. More than one output may be used
simultaneously as long as the combined parallel load is greater than 600Ω.
• Apply power to the AFS 224. Connect the AC power cord to the AC power receptacle on the
back of the AFS 224. Route the AC power cord to a convenient power outlet away from audio
lines. The unit may be turned on and off from a master equipment power switch. Since the
AFS 224 consumes a relatively small amount of power, the unit may be left on continuously.
Introduction