Installation guide

15
Measuring a Loudspeaker*
To perform this step you need a Measurement microphone, correctly configured and set up in the
appropriate position relative to the speaker.
A DEQX ‘speaker’ measurement provides the speaker’s native (anechoic) output before room
acoustics add too (corrupt) the native instrument’s output. This enables detailed timing correction
to be applied, especially thru critical midrange frequencies, which isn’t possible to achieve from
‘room’ measurements. This is why DEQX ‘room’ correction measurement and correction is only
performed after ‘speaker’ correction.
DEQX-Cal™ provides multiple swept sine wave tones from which the speaker’s ‘Impulse-
response’ is derived to achieve a high resolution Impulse response measurement. The Impulse-
response describes a speaker’s ‘time and frequency’ domain behavior, showing which
frequencies are louder or softer than they should be, and which frequencies have been delayed
by driver mechanics, crossover filters and driver misalignment. From this information the Impulse-
response’s correction is created based on settings that describe the frequency range to be
corrected and the degree of correction required to provide most ‘linear’ operating conditions for
the speakers
!The Measurement Wizard guides you through the speaker measurement process.
Choose Tools - Measure Speakers or click the Measure Speaker button
The first window of the Measurement Wizard provides a brief introduction to the use of the wizard.
Click Next to continue.