Damping Factor Correction; Locking; On Board Preset Operations; Copy And Paste Operations - powersoft M30D HDSP+ETH User Manual

10.14.1 Damping factor correction

The effect of cable resistance on a high power amplifier
performance becomes significant at low frequencies, as the cable
resistance can affect the output stage damping factor. Powersoft
Damping Control is a proprietary algorithm which compensates
for cable resistance. The user can enter cable parameters and the
algorithm calculates and applies the appropriate correction. A tool
to calculate the cable resistance is provided.
Damping factor correction can also be used to fine tune low
end nuances: a negative resistance leads to a punched bass while a
positive resistance leads to a tailed bass.
The following values can be set by the user:
f Enable: enables the correction algorithm.
f Resistance compensation: set the negative or positive resistance
value added to the output circuitry.
The cable resistance tool allows to set:
f Cable dimensions: enter the gauge of the wire used in the
speaker cable and the cable length into the Wire gauge
dropdown list and the Wire length spinbox respectively.
The upper drop-down list allows to choose between metric
(international) and imperial units. The range of imperial wire
gauges is 6 AWG to 23 AWG, and of metric wire gauges 0.25
mm 2 to 10 mm 2 . Maximum cable lengths are correspondingly
3280 ft or 1000 m.
f Resistance compensation: clicking Apply sets the cable
resistance value calculated as the correction factor. The fader
and its spinbox assume this value. However, the user can
manually modify this calculated nominal value to obtain, for
example, an enhanced LF response.
10.9

Locking

The locking mechanism allows the user to prevent changes to a
whole preset or a part of a preset. The locking interface is divided
in DSP module(s) and macro processing. Every module needs to
be locked separately; the lock status is preserved with the import/
export from/to file and copy/paste operations. In order to lock/
unlock an entire module or parts of a module:
1. Access the locking interface.
2. If the module you want to modify is already locked, you need
to insert the unlocking password for that module.
3. In order to lock the module with the selected layout, insert
the locking password and press the button Apply.
A number of operations are allowed here. Please refer to for
an explanation of the various functions and symbols.

10.10 On board preset operations

The preset tab of all M Series devices allows handling of the
internal binary preset of an M Series DSP module.
20
SAVE: allows saving of the current DSP processing on the
selected preset slot.
LOAD: recalls the selected preset slot.
WARNING! (re)Loading a preset causes a couple of seconds of
interruption of the audio stream.
FIGURE 31: Click on the preset locking button in the
layout tab of the device.
FIGURE 32: Functions and symbols in the preset locking window:
1. Select module; 2. Select channel for the macro property.
3. A padlock indicates a locked property; 4. A pencil indicates a
writable property; 5. The combo box allows to change the
single macro property.
10.11

Copy and paste operations

Any paste operation does not affect the DSP binary and its
corresponding structure; therefore, applying data with the paste
command does not lead to audio interruption.
WARNING! Any data pasted into a device needs to be saved in
a preset slot, otherwise any turn off/on cycle leads to data loss.

10.12 Input/output eq curves

In order to copy/paste an eq curve, copy the source curve with
the dedicated copy function and paste to the destination eq. with
the dedicated paste function.
WARNING! All changes will be lost if the preset is NOT
stored on board before unplugging the unit from the mains.