Jas-Audio ORSUS - Manual (Page 6)

Running-in Period
The performance of the speaker will change subtly during the initial
listening period. The drive unit suspensions will loosen up during the first
hour of use and continue to loosen up until it reaches its optimal operation
state. The time taken for the speaker to achieve its intended performance will
vary depending on the environment and its previous storage conditions as
well as how it is used. As a guide, allow up to a week for the temperature
effects to stabilize and 15 hours of average use for the mechanical parts to
attain their intended design characteristics. And up to 300 hours of use to
reach its optimal condition.
Aftercare
To prevent damage to the delicate ribbon driver of your JAS speakers, do
not vacuum the front grille cloth panel when it is mounted on the speakers.
Always remove the grille cloth panels before cleaning the grille.
The high quality clear sealed piano finish of the wood cabinet surface only
requires dusting. If needed, a damped cloth can be used for further cleaning.
Avoid use of any abrasive compounds on the cabinet as doing so may
damage the fine finish.
Caution: Do not use vacuum cleaner on the drive units of your speakers.
Doing so may damage your speakers.
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