Equalizer

CM100

12.5-Band Stereo Graphic Equalizer (EQ) - compensates for differences in source material sound quality. In ultra-compact mobile systems this EQ can be used to tailor the sound to the acoustical requirements of the room. Center frequencies are 63Hz, 250Hz, 1kHz, 4kHz and 16kHz. Faders have a center detent for an accurate "flat” response.

Below is a typical "house" EQ curve. Notice how the knobs above "0" balance out the knobs below. Start with this setting if you've never used a graphic EQ before:

Below is an example of a poor EQ curve because it cuts the output volume down by 6-12dB. You have to compensate by running the Master output higher:

OUTPUTS

14.Master Fader – to control the overall output level.

15.Stereo/Mono toggle - adjusts the Master output for stereo or mono operation.

16.Panning – adjusts the balance of right to left audio.

17.Booth/Zone Fader - controls speaker volume for a remote zone or booth monitors.

NOTE: This can also be used to supply line level audio to a lighting controller or to lights that are sound activated.

18.Meter Assign – determines whether pre-fader or master audio is sent to the stereo LED meter. PFL signal is determined by the cue assign switches.

19.Stereo Auto Peak Hold Level Indicator- quickly and accurately tracks level of audio sent to it by the meter assign. The red LEDs for +3dB, +5dB and +8dB hold program peaks for a second or two. With peak metering, it's OK to be "in the red" as long as +5dB or +8dB aren't constantly lit. When using as a master output meter, set the crossover, equalizer and power amp inputs to avoid distortion at each step in the audio chain. Proper attention to the peak meter results in the punchiest possible sound without audible distortion. When used to adjust the PFL levels, accurately match channel levels with the Pre-fader gain controls before mixing them together. The idea is to properly match PFL inputs, not the input with the stereo output meter!

HEADPHONE CUEING

Below is the worst sort of curve to use because you are using EQ to add volume. With exaggerated boost, you can easily run your power amplifiers into “clipping” and damage your speakers.

GENERAL EQ HINTS

•Boost the 63Hz band for deep bass tones and solid kick drum sound. Use sparingly because this dramatically increases demand on power amplifiers and could drive them into “clipping” .

•Cut slightly at 250Hz and more at 1kHz for extra clarity.

N o t e : Cutting is preferable to boosting.

•Boost 16kHz for a little "sizzle".

• A s a g e n e r a l r u l e , l e s s e q u a l i z a t i o n i s b e t t e r !

13.EQ ±6/12dB adjust – sets the amount of adjustment you can make with the equalizer.

20.Channel Cue/Send Assign - are used to route PFL channel audio to the Monitor Section. The channel faders do not control the Cue send volume. This audio is also sent to a rear panel output for use with an external sampler or other source such as booth monitor.

21.Split/Blend Cue – controls how PFL and Program audio are sent to your headphones. In s p l i t mode, the PFL audio can be heard in your left ear and PGM audio can be heard in your right ear. In blend mode, both PFL and PGM can be heard in both ears.

22.Headphone Mix - controls the mix of PFL and PGM signals to your headphones. When the slider is moved to the left, all you will hear is the cue source. When the slider is all the way right, you will hear what is playing through the master output. By blending, beats can be matched exactly and segues can be smooth when a song is cued.

23.Headphone Level – to adjust cue volume.

24.Headphone Input – for your 1/4” headphone.

25.12V BNC Connector allows a 12-volt gooseneck lamp to be connected directly to the mixer. This light is readily available from your Numark dealer.

26.Power Button – turns unit off and on.

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