Barefoot Footprint01, Owner'S Manual

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4
4.0 Startup
1. Plug in the grounded mains power cable (see warnings on previous page for details) .
2. Plug in an analog balanced audio signals from a source such as a preamplifier, sound card, monitor
controller or mixing console to INPUT XLR connector. Ensure that the audio signal is fully attenuated.
3. Power on the speaker with the rocker switch located on the rear panel above the mains connector. The
LED indicator on the front of the speaker will illuminate Red for a couple of seconds and then turn Aqua.
4. Turn up the audio signal and enjoy!
5.0 Protection
Limiters
Peak Limiter
The Low and High frequency channels have individual Peak Limiters designed to protect each driver
from high amplitude, short duration audio input signal spikes that might cause damage due to over
excursion of the voice coil. These limiters are implemented digitally within the DSP in such a manner
that they have zero effect on the audio signal below their thresholds. The front LED indicator light will
flash RED when a Peak Limiter on any of the driver channels is triggered. The duration of such events
is only a fraction of a second. Therefore, the LED flash may appear pink or orange as the eye naturally
blends the normally aqua
- blue color of the LED with the red.
RMS Limiter
The Low and High frequency channels have individual RMS Limiters designed to protect each driver
from long duration, high amplitude audio input signals that might cause thermal damage due to the
voice coil. These limiters are implemented digitally within the DSP in such a manner that they have
zero effect on the audio signal below their thresholds. The front LED indicator light will flash RED
when a RMS Limiter on any of the driver channels is triggered.
Caution: Signals large enough to trigger any of the limiters can generate very high sound pressure lev-
els that may result in permanent hearing damage.
Over Current
In the event of a large audio input signal that might damage the amplifiers or power supply due to cur-
rent overload, the power supply is designed to enter into Over Current protect mode. This state typi-
cally results from a large, broadband input signal burst that flat lines the limiters on all four channels
simultaneously. While the fault persists the amplifier power rails shut down, the speaker goes quiet,
and the front panel LED turns red. Once the audio input signal is turned down the speaker should
reboot within a few seconds. If the speaker fails to reboot or the LED light goes out completely, dis-
connect the audio input cable and power cycle the speaker. Verify the signal level is attenuated be-
fore reconnecting audio input cable.
Caution: Signals that cause Over Current protection to trigger can generate very high sound pressure
levels that may result in permanent hearing damage.