Crown D-75 Service Manual page 58

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with onc fuse on each driver.
Fuses help prevent damage due to prolonged overload.
but provide essentially no protection against damage from
large transients. To minimize this problem, use high-
speed
instrumem fuses such as the Liulcfuse 361000
series. Figure 3.8 is a nomograph showing fuse size
versus loudspeaker peak power ralings. If. on the other
hand, me loudspeaker is only susceptible
to
damage
caused by overheating, use a fuse or circuit breaker
having the same slow Lhennal response as the loudspeaker
itself (such as a slow-blow fuse).
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A.6
Fuse Nomograph for
Loudspeaker Protection
A·4 Appendix A
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Use Good Connectors
I. Male connectors on speaker cables should not
be exposed
10
prevent possible short circuits.
2. ConncctOTS which mightacddentallyeausethe
twocharmels to be tied togetherduring making and
breaking of connections should not be used. (A
common example is the standard 3· wire l/4-inch
stereo phone plug.)
3. Connectors which can be plugged into AC
power receptacles should never be used.
4. Connectors having low-current-carrying
capacity should nOI be used .
5. Connectors having any tendency to short, or
having shorted leads should n· e ver be used.