Dbx DriveRack PA+ Bedienungsanleitung PDF herunterladen (Seite 38)

Section A

Appendix

attenuators until the amplifier clip indicator begins to turn on. Turn the attenuators down

slightly, so the clip indicator no longer is on. You have just maximized the gain through your

system. This amplifier setting should give you maximum gain without clipping, another way to

say this is that when the output of your console is clipping you will also be at the clip point of

your amplifiers.

Once you have found the clip point of your amplifiers, you can mark this position and turn the

amplifiers back up to the point where they are clipping. You can now use the output limiters

in the DriveRack PA+ to protect the amplifier from clipping no matter what you do at the

console. With the amplifiers clipping, now go to the Limiter page of the DriveRack PA+ and turn

the limiter for each output band on. Make sure that the threshold is all the way up to +20dB.

Now slowly reduce the threshold until the clip indicator of the amplifier turns off. You have

successfully set the output limiter up and the amplifier will not be able to go into clipping no

matter what the input is.

You should now proceed to the next output band and go through the same process. If you

are using a sine wave to create clipping in your amplifier you should make sure that the sine

wave is within the frequency range of the output band that you are working with. Once all the

limiters are set up you can now turn the amplifiers back down to the gain maximized position.

The Setup Wizard will automatically set your limiters based on your choice of amplifier. Because

of component variances within the amplifier circuitry, you may need to adjust the limiter

settings by a few dB after running the Wizard to ensure that they are set correctly.

Once all the limiters are set up and the gain is maximized, reduce the output of your console

and reconnect your speakers. Now for the fun part, sit back and send your favorite music

through the system. If your system is not loud enough, you may want to consider an amplifier

or amplifiers with greater output power. Most loudspeaker manufacturers recommend an

amplifier that can provide 1.5 to 2 times the rated RMS power of the speaker. If this setting is

too loud when your speakers are reconnected you can turn down the amplifier input attenuators

even more.

DriveRack

PA+

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Dbx DriveRack PA+ Bedienungsanleitung Seite 38