On 30/01/2021 11:26, Dave Plowman (News) wrote:
In article ,
Andy Burns wrote:
Andrew wrote:

I find it difficult to believe that this would provide
66 minutes of protection.

https://www.richersounds.com/clearance-bargains/in-store/39/hoody-hoody4.html?instore


They seemed to manage 90 minutes of testing

https://www.mastdigital.co.uk/media/productattach//h/o/hoody_bs_en_1363_1.pdf

If it prevents the sound from the speaker going elsewhere, it's going to
effect the sound it makes too.

The design of a speaker to go in a true infinite baffle like a ceiling is
likely to be very different from one designed to go in a small sealed box.

That's a beauty of ceiling mounting - a relatively inexpensive unit can
sound quite good.

Of course it's merely a comms speaker used for announcements etc it likely
doesn't matter much. But this specifically mentions domestic use.

(Dolby) Atmos speakers are intended to be part of an "object based"
surround sound system - so are usually "proper" hifi units rather than
your typical tannoy style ceiling mount or 100V line system speaker.


--
Cheers,

John.

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