1.1 Speaker protection
Do not use power amplifiers that
have more output power than the
maximum power handling capacity
of your cabinet (refer to technical
specifications below). Avoid the
following operating situations that
might lead to speaker damage,
even at low amplifier output
power:
• acoustic feedback through
microphones
• prolonged high-level, high-
frequency signals from electronic
instruments
• prolonged distorted high-level
signals
• switching noises that occur when
devices are turn on or off while the
power amplifier is active
1.2 Hints for transportation
Do not forget to unplug the
speaker cables before removing the
cabinet. For transportation, always
store the cabinets so that they
cannot skid or fall over. If
necessary, use fastening straps for
fixation of the cabinets.
2. Setting up the
cabinet
Never expose your cabinet to rain,
snow or high humidity. If used for
open air concerts, always protect
the cabinet appropriately.
2.1 Cabinet placement
Place the cabinet only on surfaces
that are level and stable. If a
subwoofer cabinet is used as a
base, the feet of the top cabinet
must fit into the counterholes on
the subwoofer's top side. Without
sufficient fixation, the vibrations
caused by the speakers might cause
the top cabinets to work they way
off the subwoofers and fall over.
For best wall-to-wall high-
frequency coverage, always place
the cabinet so that the tweeters are
clear above the audience.
Attention:
- In any kind of PA setup, care must
always be taken for sufficient
anti-tilt protection of the
speakers. For this reason, it is not
advisable to stack top cabinets
excessively high!
- Do not install more than one
cabinet on a single high-stand.
- Place cabinets and high-stands
only on surfaces that are level and
stable
3. Built-in tweeter
protection
The Club series cabinets are
equipped with a specially designed
self-resetting tweeter protection
circuit.
Short overload peaks are absorbed
by the peak limiter stage which
prevents the high transient
voltages from reaching and
destroying the tweeter. Prolonged
overload signals which are able to
overheat the tweeter's voice coil
are detected by an electronic
thermoelement which detects the
r.m.s. value of the incoming audio
signal and interrupts it when a
certain value is exceeded.
Whenever you notice that your
Club series cabinet delivers no more
highs, turn off the amplifier and
allow the r.m.s. limiter inside the
cabinet to self-reset by cooling
down for about 2-3 minutes. When
restarting the amplifier, reduce its
output signal by turning down the
level controls (or the mixer's master
faders) to avoid triggering the
overload protection again.
10
Owner’s Manual Club series © Zeck Audio
Overvoltage without peak limiter
Overvoltage with peak limiter
Integrated two-stage
overload protection
