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REFERENCE
Painting the speakers
The grille and frame of your Virtually Invisible
®
191 speakers can be painted before or after the
speaker is installed. This is optional, however, and Bose cannot be responsible for the quality
of adhesion or finish of non-factory applied paints.
There are different techniques for painting the grille and painting the frame. Be sure to use
paint that is appropriate to the technique you choose.
WARNING:
Follow all recommended safety procedures for the chemicals involved. This includes
the proper use of eye protection, ventilation systems, respirators or filter masks, and fire safety
equipment if flammable solvents are used.
Painting the grille
It is important to prevent paint from clogging the grille perforations, which can adversely
affect performance. You can use a dry brush technique or spray paint the grille. However, do
not use a paint roller:
• Remove the grille from the speaker if it has been installed.
• Before you begin to paint, clean the grille to remove possible contaminants. Even
fingerprints can prevent uniform coverage.
• Check to be sure the paint is distributed evenly and covers the grille thoroughly. If not, you
may need to paint the inside of the grille to fix the problem.
• When it is dry, protect the painted grille with a clean cloth or tissue paper until you attach it
to the speaker.
Using a dry brush technique
Unthinned latex paint is appropriate for this method. Be sure to put down enough paper to
cover your work area and allow for repeatedly blotting the brush.
1. Dip the tip of a clean, dry brush in the paint.
2. Stroke across the paper to reduce the amount of paint on the brush. When you can see
individual bristle marks, the brush is ready to use on the grille.
3. Stroke lightly back and forth on the front of the grille, in a horizontal direction, until you
need more paint.
7LSIf paint clogs any of the grille perforations, try angling your stroke to unclog it, or blow
gently on the clog.
4. Repeat the above steps until the outside of the grille is completely covered.
5. Turn the grille 180° and repaint the entire surface using back-and-forth strokes again.
Using a spray technique
Latex or oil-based architectural paint requires thinning for use with a siphon-feed spray gun
set for 30 psi (2.1 bar) and for application in a 3- to 5-inch (7.6-12.7 cm) fan pattern. The
thinning formula depends on the type of paint you are using.
• Thin vinyl acrylic latex paint as follows:
To 6 parts of paint, add 3 parts of water and mix thoroughly. Add 1 part of denatured ethyl
alcohol (which breaks down paint particles so they do not clog the grille) and mix again.
• For use of architectural or automotive paints:
This type of paint should be used by a professional with the right equipment and technique.
This paint must also be thinned, using a solvent.
• Lacquer or enamel spray paint comes in an aerosol can and needs no further thinning.
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