grille cloth

grille cloth

[′gril ‚klȯth]
(engineering acoustics)
A loosely woven cloth stretched across the front of a loudspeaker to keep out dust and provide protection without appreciably impeding sound waves.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Near the end of the production run, before the grille cloth is added, the performance of each speaker is tested both audibly and electronically and compared to standard parameters.
They cover just the drivers, and since the entire cabinet is finished they reveal as much of the attractive front baffle as if no grille cloth was used at all.
This indicates that the grille cloth is acoustically transparent and the felt lining the inside edge of the grille frame is an effective mitigator of diffraction.
To get the idea, imagine taking two smoothly shaped pieces of wood, arched rather than squared at the top, each about an inch thick, placing them about 4" apart with some spacers to hold them in that relationship, then covering the space between with a recessed black grille cloth. Then add frames covered with more black grille cloth to the front and rear of the speakers, but remember that these frames stick out only about 7" each.
The front baffles are fully finished, and I found the units easy on the eyes even with the grille cloths off.