Installation / Connections
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AFS 224 User Manual
1AFS 224
a period of two years. A Return Authorization number must be obtained from dbx by telephone.
The company shall not be liable for any consequential damage as a result of the product's use
in any circuit or assembly.
4. dbx reserves the right to make changes in design or make additions to or improvements upon
this product without incurring any obligation to install the same additions or improvements
on products previously manufactured.
5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes
nor authorizes any person to assume on its behalf any obligation or liability in connection
with the sale of this product. In no event shall dbx or its dealers be liable for special or con-
sequential damages or from any delay in the performance of this warranty due to causes
beyond their control.
FOR RACK MOUNT USE ONLY - Install the AFS 224 in your rack with the provided rack
screws. When installed in a rack, the unit should be positioned with enough room (at least one
1U above the 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 1130F (450C) 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.
The AFS 224 has balanced inputs and outputs that can be used with any balanced or unbal-
anced line-level device.
To connect the AFS 224 to your sound system refer to the following steps:
• Turn off all equipment before making connections.
• Mount AFS 224 in a standard-width rack.
Install the AFS 224 in a rack with the rack screws provided. It can be mounted above or
below anything that does not generate excessive heat. Ambient temperatures should not
exceed 113° F (45°C) when equipment is in use. Although the unit’s chassis is shielded
against radio frequency and electromagnetic interference, extremely high fields of RF and
EMI should be avoided.
• Make audio connections via XLR, or 1/4” TRS jacks 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 units may be left on continuously.
Basic Connection of the AFS 224Installation RecommendationsOperation