Crown MARCO-TECH 5000VZ User Manual page 10

Notes
mode, except that ¡n the event ODEP ¡s activated to protect the
amplifier, the VZ will automatically lock into low voltage (high current)
mode. While this mode of operation will cool the amplifier more quickly
in the event that the thermal reserve ¡s exhausted, it may cause voltage
clipping rather than ODEP limiting, this may be a worse condition for
speakers. Seldom will the amplifier be operated locked in high current
mode unless a very low impedance is being driven. By the same token,
it ¡s also unlikely that a user will opérate the amplifier locked in high
voltage mode for the thermal reasons mentioned.
To Bottom Rectifier
Positivo Sense
/N
VCC BUSS BAR
-VCC BUSS BAR
N/
To Top Rectifier
Negative Sense
From 555 for
Switch Control
-VCC BUSS BAR
VZ Switch Control Circuitry
10-MA-5000VZ