Martin Audio W8L Longbow Application Manual page 87

High frequency compensation
The high frequency elements of larger W8L Series columns are split into three
sections which cover short, medium and long throw.
This allows high frequency (air absorption) and compensation to be tailored to suit
each section. The standard controller settings already incorporate a degree of
shelving and peaking boost as throw increases.
When equalising the W8L Series systems do not add mo re than 8dB of boost to
compensate for air absorption if the system is to be driven hard. Delay systems
should be considered if very dry (or windy) conditions are expected.
All material © 2007. Martin Audio Ltd. Subject to change without notice.