Places of business, air terminals and cafés were the principal homes of roof speakers. They can be handily perceived by the thick grilles that empty decibels اسپیکر سقفی هوشمند into your head.

Yet, how could somebody need roof or in wall speakers, rather than a couple of typical, effective and profoundly reasonable speaker cupboards. There could be a couple of reasons:

Saving some space in the room;
Keeping up with the feel of the room;
Concealing the wires;
Disposing of the openings in the walls.
Before, there didn't really like wall or roof mounted speakers. While there are still individuals that think plenum-mount innovation is only an impulse, on the opposite side this innovation specifically acquires and more backers. This is presumably because of an adjustment of ways of life. Individuals need the climate adjusted to their requirements, not the reverse way around.

There's one slam dunk with in-wall and roof speakers: they are not for the people who are into top of the line sound. You could scarcely find an audiophile ready to exchange the profound bass that the person in question cherishes such a tad of additional rack space.

In any case, regardless of whether not an audiophile, you'll have to focus on the accompanying boundaries:

Recurrence reaction - provides you with the scope of the discernible range that the speakers can repeat; the human ear can hear 20 Hz to 20 MHz, hence the more a speaker moves toward this span, the better.
Power taking care of - indicates the scopes of force the speakers can securely get from the enhancer (for example 20-100 watts);
Proficiency - likewise called responsiveness, this rating shows how really the speaker utilizes the power shipped off it by the intensifier.
A critical viewpoint in having in-wall or in-roof speakers is the way you catch the back wave. You can't necessarily in all cases realize what occurs behind that wall, how huge the opening truly is, or on the other hand assuming it's fixed. The response is to utilize fixed speakers, regardless of their area. Any other way you'll have a great deal of back acoustic energy squandered into the back-wall and a mutilated, lopsided sound.