Operation, Quick start – dbx AFS224 Manual User Manual

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AFS

™

224

AFS™ 224 User Manual

Quick Start

For best performance, it is recommended that you perform the following:

• Ensure you have properly configured the AFS 224 for your application (i.e. dual mono

operation or stereo linked operation). See “Linking Channels” for further information.

• Ensure that the gain structure has been properly set. See “System Connection & Gain

Structure”.

Step 1. If you intend to initially ring out the system before

hand, using Fixed Mode, set all buttons to the
colors indicated on the right. If the system will be
used for speech reproduction only, set the TYPE
buttons to SPEECH (TYPE LEDs Off). If you
intend to simply use Live Mode and do not intend
to ring out the system before hand (this is the
easiest and fastest way to get up and running with
the AFS 224), press and release the
buttons to activate the AFS processing (BYPASS
LEDs off) and skip to Step 7.

Green

Yellow

Red

Yellow

Step 2. With signal present, perform a soundcheck and bring up the channel fader for each microphone

that you intend to ring out. Try to set each microphone as close as possible to the desired
performance level while still remaining under the point of feedback. If feedback does occur,
slightly lower the channel fader until the feedback disappears.

Step 3. Fully attenuate the mixer’s master output faders and mute all other mixer channels which you do

not intend to ring out.

Step 4. With no signal present in the microphones which you are about to ring out (any signal present will

be mistaken for feedback by the AFS 224 and notched out), press each channel’s
button so that the button’s LEDs are no longer lit (AFS processing is now enabled).

Step 5. Slowly raise the mixer’s master output faders. At some point feedback will begin to occur. Raise

the faders until either you are a few dB above the level at which the system will be operated or
until all Fixed filters are set (indicated by the button LEDs flashing green).

Step 6. Now set your mixer’s master output faders back down to the level at which the system will be

operated.

Step 7. Press each channel’s button until both are lit red (you are now in Live Mode).

Step 8. If you would like to lockout the front panel controls, lock out the AFS 224 as described in the

“Front Panel Lockout” section of this manual. The system is now ready for use.

Operation