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User profile for user: Timo Beckman Geluidstechniek
Timo Beckman Geluidstechniek Author
User level: Level 1
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Mac Pro 8core multiple screens.

I recently purchased a Mac Pro 8core with multiple screens for seminar purposes (along with 6 imacs for students).

All's working so no problems but 1 challenge:


Is it possible to just mirror the centre 4K screen (1 from 3) so the students can watch the program running on that screen via a beamer (HDMI input on the beamer) without having to mirror all 3 4K screens.

The left and right screens should be only visible for me (running processor controller interface and remote desktop for viewing the 6 student imacs).

Thanxs for any reply ;-)

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Posted on Sep 5, 2015 4:05 AM

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User profile for user: Grant Bennet-Alder
Grant Bennet-Alder
User level: Level 10
127,717 points

Posted on Sep 5, 2015 3:02 PM

Yes. You can mirror exactly the displays you choose using the 'arrange' pane.

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Drag one of the displays to be mirrored, and instead of making it touch the outside edge of an existing display, drag it so that it is directly over another display (it does not have to be exact). These two displays (and only these two) will be mirrored.


When two displays are mirrored, their resolutions may be reduced to a resolution that can be handled by EACH of the displays involved.

Your Beamer (projector) is treated just like any other display.

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User profile for user: Grant Bennet-Alder
Grant Bennet-Alder
User level: Level 10
127,717 points

Sep 5, 2015 3:02 PM in response to Timo Beckman Geluidstechniek

Yes. You can mirror exactly the displays you choose using the 'arrange' pane.

User uploaded file


Drag one of the displays to be mirrored, and instead of making it touch the outside edge of an existing display, drag it so that it is directly over another display (it does not have to be exact). These two displays (and only these two) will be mirrored.


When two displays are mirrored, their resolutions may be reduced to a resolution that can be handled by EACH of the displays involved.

Your Beamer (projector) is treated just like any other display.

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Mac Pro 8core multiple screens.

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