![Contacta PRO Series Installation & User Manual Download Page 12](http://html.mh-extra.com/html/contacta/pro-series/pro-series_installation-and-user-manual_2655576012.webp)
12
In theatres, stadiums, and other large venues, sound sent from
speakers will be impacted by the speed of sound, whereas audio sent
through a hearing loop will reach a user instantly. This means the two
sounds must be aligned or users will hear a constant echo.
Select the screen’s circle to adjust syncing and compensate for latency.
Low Cut Filter
Selecting Low Cut Filter from Inputs opens the following screen:
• Adjustment Level - Displays the input attenuation level (0db to
-47dB). Selecting this circle allows attenuation level adjustment.
• Signal Level - When optimum Adjustment Level has been achieved,
“Good” will display consistently (though peak levels may flash to
“Low or “High”). Consistent display of “Low” or ”High” means the
level is incorrect and automatic gain control cannot operate.
Audio Time Delay
Selecting Audio Time Delay from Inputs opens the following screen:
This feature removes low frequency sounds from the hearing loop
when background noise such as air conditioners might impact users.
Select either 150Hz or 180Hz if required and a green ‘LCF’ (Low Cut
Filter) symbol will be displayed on the left.