Important; Cooling; Start-Up And Operation - Amate Audio HD Serie Manual De Usuario

The + Pole of the speaker is connected to the Speakon Pin +1 of CH A, or
the Red terminal of the CH A. The – Pole of the speaker is connected to
the Speakon Pin +2 of CH A, or the Red terminal of the CH B.
IMPORTANT: The recommended load impedance for bridge mode is
8 Ω. If the load impedance is 4 Ω, each power module will work at an
effective impedance of 2 Ω, and therefore permanent installations are
discouraged in these conditions (see "Warnings" section 7). Please check
the specifications table to learn the delivered power in Bridge mode.

10. Cooling

The HD Series are equipped with electronically controlled forced ven-
tilation, which is carried out by two turbines situated at the rear pan-
el, one in front of each power module. According to the temperature,
two different fan speeds are set, and the hot air is evacuated through
the front panel. It is very important to favor the good air circulation to
keep the equipment in a stable temperature work pattern; therefore any
possible obstruction must be avoided both in the rear and front part.
In addition, an installation close to heat generator sources or lack of
ventilation must be avoided (closed cabinets).

11. Start-up and operation

Once the mains, loudspeaker and sound sources (input) connections
have been made correctly, start up the pre-amp sources and then press
the ON/OFF switch. Turn the volume controls clockwise to obtain the
maximum gain.
The amplifier is equipped with a Soft Start circuit, which assures a gen-
tle, pop free start up, avoiding stress to the loudspeakers.
In order to obtain the maximum dynamic range from the amplifier, it
is recommended to set always the gain controls to the maximum, and
12. Clip / Limiter
This circuit prevents the amplifier from delivering distortion at the loud-
speaker outputs. Its action is practically inaudible and protects the loud-
speaker voice coils. A LED on the front panel indicates the action of the
Make sure the LED LIMITER is not alight permanently!
No extra power is obtained in this way, loosing dynamics and sound quality.
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CAUTION: In this situation, it could be dangerous to handle the connec-
tions by non-authorized personnel, due to manipulation of high voltage.
ATTENTION: As the forced air circulation (from the back to the front)
can produce the introduction of dust and dirt in general over the internal
radiators, it is highly recommended to make an internal cleaning operation
at least once a year, depending on the particular circumstances of each in-
stallation or use.
NOTE: Any deterioration of the amplifier caused by an evident presence of
dust and/or internal humidity, will EXCLUDE of any right of application of
the Warranty for this product.
control the output power by regulating the signal level at the amplifier's
input (using the corresponding mixer, crossover, equalizer or processor
gain control).
When the maximum output power has been reached in any of both
channels , this will be indicated by the corresponding led LIMITER, ad-
vising that it is recommended to lower the general volume coming from
the mixer our sound source connected to that channel (previous crosso-
ver, equalizer, processor, etc.).
anti-clipping limiter of each channel. If the clip LED is lit intermittently,
this may be interpreted as correct, but it means that the amplifier is
reaching its maximum power at this point.