SRM | V
-Clas
s High-P
er
formance P
ow
er
ed L
oudspeak
er S
eries
22
SRM | V-Class High-Performance Powered Loudspeaker Series
Protection Circuitry
SRM | V-Class loudspeakers employ a built-in limiter
for less distortion at peak levels. A dynamic bass
response circuit provides optimal low frequency
response regardless of overall output level. Additional
protection includes automatic thermal shutdown should
the amp overheat. However, with Class-D amp technol-
ogy, which is highly-efficient, this should never be a
problem.
The protection circuits are designed to
protect the loudspeakers under reasonable
and sensible conditions. Should you choose
to ignore the warning signs [e.g. excessive distortion],
you can still damage the woofer in the loudspeaker
by overdriving it past the point of amplifier clipping.
Such damage is beyond the scope of the warranty.
Limiting
Let’s take a peek under the hood at the polymer
compression drivers. Compared to other available
drivers, these provide a substantially smoother
high-frequency response which results in a studio
monitor level of accuracy and clarity. Furthermore,
these drivers offer an insanely smooth transient
response behavior. Yes, we, too, are fans of our own
products!
Continuing on, the driver has its own compression
circuit which helps protect it from damaging transient
peaks. The compressor is designed to be transparent
and is not noticeable under normal operating
conditions.
Overexcursion Protection
A subsonic filter circuit just prior to the power
amplifier prevents ultra-low frequencies from being
amplified. Excessive low-frequency energy can damage
the woofer by causing it to “bottom out,” also know
as overexcursion, which is equivalent to a mechanical
form of clipping.
Thermal Protection
All amplifiers produce heat. SRM | V-Class
loudspeakers are designed to be efficient both
electrically and thermally. In the unlikely event
of the amplifier overheating, a built-in thermal
switch will activate, muting the signal.
When the amplifier has cooled down to a safe
operating temperature, the thermal switch resets
itself, and the SRM | V-Class loudspeaker resumes
normal operation.
If the thermal switch activates, try turning down
the level control a notch or two on the mixing console
(or via the Speaker Control knob) to avoid overheating
the amplifier. Be aware that direct sunlight and/or
hot stage lights may be the culprit of an amplifier
overheating.
AC Power
Be sure the SRM | V-Class loudspeaker is plugged
into an outlet that is able to supply the correct voltage
specified for your model. It will continue to operate
at lower voltages, but will not reach full power.
Be sure the electrical service can supply enough
amperage for all the components connected to it.
We recommend that a stiff (robust) supply
of AC power be used because the amplifiers place
high current demands on the AC line. The more power
that is available on the line, the louder the speakers will
play and the more peak output power will be available
for a cleaner, punchier bass. A suspected problem
of “poor bass performance” is often caused by a weak
AC supply to the amplifiers.
Never remove the ground pin on the
power cord or any other component of the
SRM | V-Class loudspeaker. This is very
dangerous.
Care and Maintenance
Your SRM | V-Class loudspeakers will provide many
years of reliable service if you follow these guidelines:
• Avoid exposing the loudspeakers to moisture.
If they are set up outdoors, be sure they are under
cover if rain is expected.
• Avoid exposure to extreme cold (below freezing
temperatures). If you must operate the loudspeakers
in a cold environment, warm up the voice coils slowly
by sending a low-level signal through them for about
15 minutes prior to high-power operation.
• Use a dry cloth to clean the cabinets.
Only do this when the power is turned off.
Avoid getting moisture into any of the openings of
the cabinet, particularly where the drivers are located.
