Two notes Audio Engineering Torpedo Captor X SE User Manual page 6

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2023/09/21
08:38
The electronic term that describes the speaker cabinet with respect to the amplifier is the "load": we
say the cabinet "loads" the amplifier. The term "load box" is used to describe any product that
provides a load to the amplifier. The main parameter of the load box is its impedance, expressed in
Ohms. An 8-Ohm load box must be plugged to the 8-Ohm speaker output of the amplifier.
The power sent to the load is turned into heat, so please follow the cooling recommendation of the
load box — otherwise overheating may cause damage, both to the load box and to the amplifier.
The Captor X SE is a load box. This term indicates that the Captor X SE can electrically replace the
speaker cabinet while dissipating (transforming into heat) the power coming out of the amplifier.
The Captor X SE is a reactive load. A reactive load simulates the complex impedance of a real
speaker.
2. Which output volume for my amplifier?
The correct use of your amplifier with a load box requires some precaution. Due to the relative silence
while playing with a load box compared to a traditional amp and cab setup, it is much easier to
accidentally run your amplifier beyond the reasonable limits set by the manufacturer. This can lead to
faster tube wear and, in some cases, more serious and permanent issues.
When first testing the amplifier at high volume, monitor the color of the
tubes and the general state of the amplifier. Red-glowing tubes or any
appearance of smoke are signs of a problem that may result in partial or
complete destruction of the amplifier.
Keep in mind that the "sweet spot" - the optimal running point of the amplifier and the one that will
give you the tone you're looking for - is rarely obtained at maximum volume –
showing this. In addition, the volume control of the amplifier is usually logarithmic, which means the
volume increases quickly within the first half of the potentiometer rotation, reaches its maximum at
12 o'clock, and doesn't change much beyond this point. Therefore, you can reach the maximum
volume of your amplifier even if the volume potentiometer is not set at maximum.
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Always connect the speaker output of your tube
amplifier to an appropriate load (speaker cabinet
or load box). The Captor X SE is such a load. The
Captor X SE does not need to be powered up to
act as a load box. The maximum admissible
power of the Captor X SE is 100W RMS, your
amplifier shouldn't be set to play at a higher
output power value. See
amplifier is more powerful than 100W.
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Printed on 2023/09/21 16:36