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recommendations below are for general purposes, providing a balanced system for most music applications. Quantities may
need to be adjusted up or down for specific situations.
TTS18-A AND TTS28-A SUBWOOFERS
TTS18-A and TTS28-A subwoofers are designed to complement the TTL33-A loudspeakers to both extend the low frequency
response and provide more output for the upper low frequencies. The TTS18-A subwoofers may either be ground stacked, flown
as part of a TTL33-A array, or flown separately alongside a TTL33-A array. A general recommendation is to use TTL33-A and
TTS18-A in a ratio of one array module to one sub for outdoor applications and with respect of TTS28-A in a ratio of two array
module to one sub for outdoor applications. For indoor applications the suggested ratio is a half number of subs.
Subwoofer time alignment
A correct time alignment of ground stacked
subwoofers to the main flown array is
necessary. The signal arrival at the FoH
position should be used as the reference for
time alignment.
The delay time value ∆t is equivalent to the
physical offset ∆x divided by the speed of
sound (i.e. 343 m/s)
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