ART Pro Audio SMS226 - Speaker Management System - Manual (Page 14)

11
INPUT MODULE DESCRIPTIONS
General settings
The SMS226 architecture consists of two inputs that can be operated in dual or stereo mode. Stereo input
operation is simplified by setting the Input Link ON (under the UTILITY/System menu). When linked, both
channels' parameters are identical as well as compressor attenuation.
Compressor button
The Compressor functions include Threshold, Ratio, Knee, Attack, Release and MakeUp level. The
Compressor is based on a true RMS detector resulting in smooth transparent control over the input signal
dynamics.
The Knee parameter modifies application of attenuation based on the Ratio setting. This smoothes the action
of the compressor above the threshold. When set to 100, a lower ratio then set is applied over the first 12dB of
input level change.
The MakeUp parameter adjusts gain after the attenuation of the compressor takes place.
The input meter can be set to monitor the compressor's action by selecting Compressor instead of In. Level
in the Vu-Meter Mode parameter. In this mode, the top LED Lights solid to indicate the mode and the next LED
lights to show that you have exceeded the threshold level and the compressor is just beginning to reduce gain.
See the System Functions section on Input Menu/ VU Meters for more information.
Graphic EQ button
The graphic EQ covers 31Hz to16 kHz and allows you to boost or cut each band 12dB. The frequency
response of the EQ settings can be viewed in the LCD display. You can use the EQ Flat parameter to quickly
set ALL of the bands to 0dB. The gain control covers a +6dB to -12dB range
4 . Make sure that the Bypass EQ
parameter is not set before listening to the results of tuning the EQ.
The EQ can be automatically adjusted by using the EQ Wizard. Refer to the SETUP PROCEDURE section of
this manual for more info.
Noise Gate button
The noise gate is used to eliminate unnecessary audio from the inputs. The Attack parameter adjusts how
fast the noise gate goes from muting the audio to passing the audio. The Release parameter sets how fast the
audio mutes after it passes below the threshold.
Sub-synth button
Use the Sub-harmonic generator to create chest-thumping low bass from audio material that lacks low-end
audio. You can adjust the amount of added harmonics from 0-100%. You can also adjust the frequency band
they reside in (24-36 Hz or 36-56 Hz) depending on the capability of your system.
Feedback button
The Feedback eliminator inserts notch filters to allow you to maintain or slightly increase system level while
killing feedback. Twelve notch filters are available on each channel. You can tune the system leaving 0 -11
fixed filters and then leave the remaining active filters that wait to see feedback and act to reduce it
immediately.
Activating the Fbk Enable setting turns on the Feedback Eliminator function.
4 You can use the Compressor's MakeUp function for more gain if required.