Use the manufacturer’s design
The installation shown in [1] was fairly straightforward,
because the frame had cast-in places for the speakers.
Sometimes these come with small weights clamped where
the speakers go, sometimes not. Either way it is a matter of
locating the speaker(s) that fit the outline and thickness. Then
install them. Frequently these speakers are comparatively large
(over 30 mm in diameter).
The specific speakers that were available in the proper size at
the time I did this installation were 8 ohms and rated at 0.3
watts. Since they share the applied power, they can handle 0.6
watts together. This is marginal for a 1 watt output decoder,
but acceptable if you keep the volume down. Check out my
January 2014 column
for wiring methods.
MRH-Jul 2014
