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7 - Protection systems
Because Audiophony knows what sound
professionals need, our SMi amplifiers are equipped
with many protection systems to guarantee the best
possible lifespan for the internal components of
your amplifiers and all devices connected to their
outputs.
- SoftStart System
Upon activation of your amplifier or activation of one
of the protection system, the Softstart system will
slowly increase the output so the speakers will not
have to deal with sudden peaks.
- Thermal protection
The thermal protection circuit will open output relays
in case of excessively high temperature.
The Protect LED lights up during this process. In
the power transformer temperature gets too high,
its temperature sensor will disconnect all power
outputs, The Protect and Clip LEDs will light up
while the ON LED lights off. Cooling fans will
continue operating at low speed and your amplifier
will be fully functional again once an acceptable
temperature has been reached.
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Important notes about the Bridge mode
1 - In Bridge mode, the load impedance must never go below 8 Ohms.
By connecting 2 x 8 Ohms speakers in parallel mode on a single output, this output
will have a 4 Ohms impedance.
To determine the impedance connected to an output, please proceed as follows:
In case of 2 x 8 Ohms speakers:
CHARGE = 1/(1/8 Ohms + 1/8 Ohms) = 1/ (0,125+0,125) = 1/0,25 = 4 Ohms
2 - In stereo mode, the minimum impedance is 2 Ohms: 4 x 8 Ohms speakers
connected
in parallel per side.
3 - Never connect the ground of your speakers.
Ti SERIES - Professional stereo amplifiers
- Short-circuits
This protection takes effect upon detection of
a short-circuit via one of the output (defective
loudspeaker, poorly isolated speaker cable, etc.).
This system detects short-circuits such as
excessively low impedances and reduce the voltage
output of your amplifier to prevent the destruction of
power transistors.
Affected outputs will be disconnected by the thermal
protection system if the short-circuit continues.
- DC Offset protection
The output relays will open automatically to
prevent damage to your speakers if one of the
channels detects direct current via one of its output
connectors.
- Ultra-low frequencies (<40 Hz)
The internal high-pass filter gets rid off ultra-low
frequencies. However, if such frequencies were to be
detected, a relay will eliminate them.