ATL IB2S-A, User Manual

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20+ hours to run-in
Running-In
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When brand new, PMC loudspeakers will take a short period of use before they
reach their full potential.
This is because the mechanical and acoustical characteristics of the bass,
midrange and treble drive units alter slightly after manufacture as the flexible
elements in their construction relax and reach their optimum compliancy.
The
TM
Advanced Transmission Line
cabinet parameters are critically designed to load the bass driver
accurately only when it has reached its long-term, optimal compliancy.
Consequently, during the initial running-in period of about 20 hours, the
performance of the IB2S-Active Series active monitor will change and improve.
You will notice the bass tonality becoming warmer, fuller and more natural, and
the bass extension will increase significantly. As the tweeter relaxes the treble
tonality also sweetens and integrates perfectly with the midrange unit, and the
sound staging improves.