.
GRILLE REMOVAL
The steel grilles on the MVP full-range systems are mounted with
four molded nylon grille clamps. These clamps are located on the
face of the cabinet, two just below the lower edge of the high
frequency horn, and two about 3” (about 8 cm) above the bottom
edge of the face. The clamps are operated by a socket head machine
screw that draws the upper portion of the clamp down toward the
face. As the clamp is drawn down its outer surface engages the
grille, forcing the grille down against the face and securely clamping
the grille against the edge of the cabinet.
Grille removal is easiest with the cabinet facing upward. To remove
the grille use the 1/8” (3mm) ball end hex key that was included in
the package with this manual. Insert the long arm of the key
through the grille perforation nearest to the socket head screw of the
grille clamp. Engage the key into the screw head and loosen the
screw five full turns. Repeat this procedure with the remaining
three grille clamps.
9
SIGNAL PRESENCE INDICATOR
There is a green light located on the front of the high frequency horn
that indicates that the signal is reaching the speaker cabinet.
THERMAL-LINK
TM
HIGH FREQUENCY DRIVER
PROTECTION:
All of the
MVP™
full-range systems (
MVP25, 28, 35, 36, 37 and 38
)
employ a unique thermally compensated protection system for the
high frequency compression driver. The Thermal-Link
TM
protection
system continuously monitors the temperature of the high
frequency driver and adjusts the threshold of protection mechanism
to compensate for the driver’s temperature. Normally, when a
driver is operated at high power levels its temperature increases.
The longer it is operated at high power the hotter it becomes. When
a driver becomes hot, its power capacity is decreased, and the
threshold of the protection circuit needs to be lowered to prevent
driver damage.
The Thermal-Link
TM
protection system does this automatically,
enabling the speaker system to operate at its maximum output
capacity with little risk of damage to the high frequency
compression driver. When the protection threshold of the Thermal-
Link
TM
system is reached, the power to the high frequency driver is
reduced by 6 dB.
The Thermal Link protection circuit does not
protect the woofer and does not affect the woofer output when
activated.
The Thermal-Link™ protection is solid-state and auto-resetting.
There are no mechanical relay contacts or light bulbs that can burn
out. When the power level to the high frequency driver is reduced
to a safe level, the Thermal-Link
TM
system will automatically reset
itself and restore full power to the driver. The Thermal-Link
TM
protection system is the subject of a current US patent application.
6
