Click the “Input EQ” box and the equalization curve for the bit One HD Virtuoso active input will be displayed. By clicking on the POP UP 
, activation icon, you can bring to Full screen the display of the main controls of the equalizer. If you do not use the POP UP mode it will always be possible to perform system tuning but reducing the use of the equalizer functions.
◼︎ MASTER INPUT SETTING
It is possible to operate on the equalizer of the Master input, acting on all the fronts at the same time, or by activating the Acoustic Front option, on each single input front.
It is also possible to compensate for any phase rotations of the input fronts by activating the AllPass Filter menu, using 4 intervention points consisting of a second order All Pass.
◼︎ Parametric EQ adjustment
A. MODULE: select MASTER on the graphic interface and then MODULE to modify the equalizer parameters, in order to set up a 10 pole (of which 9 FIR - blue poles) and 1 IIR (green pole) equalization curve. By operating on the setup window it is possible to adjust the Frequency (f: 20 Hz ÷20KHz step min 1HZ), Gain (g: -15 dB ÷ +12dB step min 0.1 dB) and the Q factor (Q: 0.1÷ 16 step min 0.1) using the cursors.
Example of IIR pole adjustment
The curve can be manually edited using the mouse pointer. To be able to vary the "F" "G" and "Q" factors, you will just need to act on the mouse wheel equipped with this function. A finer adjustment of these parameters can also be made using only the PC keyboard.
Example of FIR pole adjustment
- The keys 
and 
: allow the selection of the pole to be adjusted on the diagram. The successful selection of the pole is displayed by a circle around it.
- 
: Key: allows the selection of the “F”,”G” and “Q” poles control point. The successful selection of the control point is visible through the green color of the control slider.
- Keys
+ and + .
◼︎ Graphic EQ adjustment
A. MODULE: select MASTER in the graphic interface and then MODULE to change the equalizer parameters, in order to set a curve using a 31-band graphic equalizer. Using the setup window, it is possible to select the third octave frequency and the Gain (g: -15 dB ÷ + 12dB step min 0.1 dB) with a fixed quality factor Q (4.3).
Example of IIR pole adjustment
- Keys and : they allow the user to select the pole to be adjusted in the graph. The successful selection of the pole is displayed by a circle around it.
- Button : it allows you to select the gain of the pole. The successful selection of the control point is visible through the green color of the control slider.
- Keys + and + .
Activation:
- Custom EQ Settings: by enabling the function (light on) it is possible to enable the changes made to the equalizer and the All Pass input filters.
- EQ Module Off: by enabling the function (light on) it is possible to disable the changes made to the input equalizer. This function is necessary during the calibration phase to appreciate and evaluate the settings selected.
- EQ Phase Off: by enabling the function (light on) it is possible to disable the changes made to the All Pass input filters. This function is necessary during the calibration phase to appreciate and evaluate the settings selected.
B. ALL PASS: the graphic interface will show the fronts related to the application of the All-Pass filters (Front L-R, Rear L-R, Center), and a chart showing the electric result of the fronts selected from the menu. If a phase analysis was performed during the "Configuration Wizard" (see section 7.2.2.6), the compensation points recommended by the analysis will be displayed. They can be fine tuned thanks to the electrical result and listening sessions. If the automatic phase analysis procedure has not been performed, the All-Pass control points will be present but no position for compensation will be recommended.
￭ All-Pass Filter type:
There are two types of All-Pass filters, 1st and 2nd order. Their selection is done by double clicking with the mouse pointer, which will highlight the area with a different color depending on the type selected. First order filters are light blue, while second order filters are yellow. Their activation is displayed by the transition from a point to a well-highlighted intervention area that occurs by setting the phase other than 0 °.
￭ All-Pass Filters Setting:
Frequency: by moving the point to adjust with the mouse pointer (f: 20 Hz ÷20KHz).
Phase: + and + allows the change of the Phase control at 1 degree Steps. For 1st order All-Pass the adjustment ranges from 0-180° while for 2nd order All-Pass the adjustment ranges from 0 -360°.
Q: + 
and + 
allows the change of the Q factor at 0.1 Steps (just for 2nd order All-Pass).
￭ Total Electric Response.
The chart shows the electrical sum of the channels selected in the menu “Trace Curve”. If a “Phase Analysis” was performed (see sec. 7.2.2.7), two curves will be displayed. The Blue curve refers to
the trend of the selected fronts, where the presence of All-Pass filters can be shown, provided by one or more holes in the frequency domain, while the orange color refers to the fronts compensation via All-Pass filters. If the Phase Analysis was not performed, only the orange curve resulting from the modifications made via All-Pass adjustment will be displayed.
￭ Phase ON/OFF / Activate
By clicking on the Phase on/off key, it is possible to enable or disable the correction of the phase applied to the Head Unit connected to the bit One HD Virtuoso.
The activation is successful when the led light becomes red.
￭ Restore Phase Alignm suggestions:
If an “AUTOMATIC MASTER DE-EQ / PHASE Analysis” was performed and new valued are then edited, it will be possible to restore the phase compensation values suggested by the software (see sec. 7.2.2.6).
C. LEVELS: during the tuning phase of the inputs it is possible to carry out a further refinement of the input levels. This can be done by selecting the Fine Settings item, which will allow you to act on the sliders of the input sensitivity of each Master channel (previously set automatically), or via the active buttons:
+6dB: increasing the sensitivity of all channels by 6dB, compared to automatic calibration.
+3dB: increasing the sensitivity of all channels by 3dB, compared to automatic calibration.
Remark: If you decided to use the RVA function, it is not advisable to use gain increases + 3dB / + 6dB, which could cause distortions when adjusting the volume of the auxiliary source (AUX / Optical).
Ref: setting the sensitivity of all channels to the level calculated in the automatic calibration.
◼︎ AUX INPUT SETTING
A. Select AUX on the graphic interface to modify the equalizer parameters, in order to set up a 10 pole (of which 9 FIR - blue poles) and 1 IIR (green pole) equalization curve.
By operating on the setup window it is possible to adjust the Frequency (f: 20 Hz÷20KHz step min 1HZ), Gain (g: -15dB ÷ +15dB step min 0.1 dB) and the Q factor (Q: 0.1÷16 step min 0.1) using the cursors.
The curve can be manually edited using the mouse pointer. To be able to vary the "F" "G" and "Q" factors, you will just need to act on the mouse wheel equipped with this function. A finer adjustment of these parameters can also be made using only the PC keyboard.
Example of IIR pole adjustment
Example of FIR pole adjustment
- The keys and : allow the selection of the pole to be adjusted on the diagram. The successful selection of the pole is displayed by a circle around it.
- Key: allows the selection of the “F”,”G” and “Q” poles control point. The successful selection of the control point is visible through the green color of the control slider.
- Keys + and + .
B. Levels: during the tuning phase of the inputs it is possible to carry out a further refinement of the input levels.
This can be done by selecting the Fine Settings item, which will allow you to act on the sliders of the input sensitivity of each Master channel (previously set automatically), or via the active buttons.
◼︎ OPTICAL 1 / OPTICAL 2 INPUT SETTING
A. Select Optical 1 / Optical 2 on the graphic interface to modify the equalizer parameters, in order to set up a 10 pole (of which 9 FIR - blue poles) and 1 IIR (green pole) equalization curve. By operating on the setup window it is possible to adjust the Frequency (f: 20 Hz ÷20KHz step min 1HZ), Gain (g: -15 dB ÷ +15dB step min 0.1 dB) and the Q factor (Q: 0.1÷ 16 step min 0.1) using the cursors.
The curve can be manually edited using the mouse pointer. To be able to vary the "F" "G" and "Q" factors, you will just need to act on the mouse wheel equipped with this function. A finer adjustment of these parameters can also be made using only the PC keyboard.
Example of IIR pole adjustment
Example of FIR pole adjustment
- The keys and : allow the selection of the pole to be adjusted on the diagram. The successful selection of the pole is displayed by a circle around it.
- Key : allows the selection of the “F”, ”G” and “Q” poles control point. The successful selection of the control point is visible through the green color of the control slider.
- Keys + and + .