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How to Use the Attenuator
How to Use the AttenuatorHow to Use the Attenuator
How to Use the Attenuator
First, lets start with the basics of how to use the attenuator. For practical purposes,
the Attenuation knob can be thought of as providing the same function as a “master
volume” control. This means that you will use the “Volume” controls to adjust the gain
of the preamp and the amount of overdrive/distortion you wish to dial in, and you will
use the “Attenuation” dial to set the volume level that you wish to produce.
You may wish to experiment to confirm this behavior. For example, try selecting the
lead voicing, and set the amp up like this:
Volume Tone Voicing Reverb D ell Attenuation
7 7 Lea 4 5 -24 b
Now, while playing through the amp, try turning the Volume control up and down a bit.
You will see how slight changes in the Volume control will make the tone more or less
distorted, but won’t have much effect on the volume level in the room. The reason for
this is that the output stage of the amplifier is already generating maximum output
power even if the amp is only just on the edge of breakup. As you turn up the Volume
control past this point, the output stage cannot produce any more power – it just
becomes more overdriven.
After trying that experiment, set the volume control back to 7, where you started, and
try adjusting the attenuation knob on the back of the amp. You will see that the
volume level in the room changes, but the amount of overdrive and distortion does not.
This is the purpose of the attenuator.
Technical Details
Technical DetailsTechnical Details
Technical Details
The Falcon Grande's Ironman II attenuator is a fairly sophisticated unit containing
certain features that make it very effective at maintaining the cranked amp sound at
even very low volume. Here are few technical details of these design features:
Tuned Reactive Load
Tuned Reactive LoadTuned Reactive Load
Tuned Reactive Load
To preserve the natural response and feel of an amplifier, it is critical that the output
tubes see the proper loading. The Tuned Reactive Load of the Ironman-II closely
mirrors the impedance curve of a real speaker, which results in a more natural
tone and feel than the simple resistive load used in most attenuators.
Volume Compensation Circuitry
Volume Compensation CircuitryVolume Compensation Circuitry
Volume Compensation Circuitry
The ear perceives sound differently at low and high volume levels, which is why many
attenuators may sound thin and muffled at lower settings. The Ironman-II overcomes
this phenomenon with its' proprietary Volume Level Compensation Circuitry, which
adjusts the tonal balance at each attenuation step, to ensure that the sound you hear is
always as deep, rich, and present at low volume as it is at high volume.
Damping Factor Correction
Damping Factor CorrectionDamping Factor Correction
Damping Factor Correction
A loudspeaker performs differently when driven with very little power, compared to its
response at full power. The Ironman-II's Damping Factor Correction Circuitry
compensates for this effect, making the speaker perform more naturally at low
volume so it retains the feel of a cranked amp, even at bedroom volume.