The attenuation profile controls how the volume output changes as you adjust the volume knob or scroll through steps. Rather than a simple 1-to-1 mapping, different curve profiles shape the relationship between your input position and the actual output level, giving you control that feels natural, precise, or aggressive depending on your application. On the WVC, 0% volume sets the digital potentiometer to its mute register and produces silence; values above 0% map across the -95.5 dB to 0 dB range and beyond with gain applied. Five profiles are available, each suited to a different listening or competition scenario.
Attenuation Curve Comparison
Attenuation at Key Volume Points
The table below shows approximate dB values at key knob positions for each profile. Actual values vary slightly by curve shape.
| Volume Position | Inverse Log (Default) | Linear | Audio Taper | S-Curve | Competition |
|---|---|---|---|---|---|
| 0% | Mute | Mute | Mute | Mute | Mute |
| 25% | -47 dB | -72 dB | -93 dB | -81 dB | -95.5 dB |
| 50% | -25 dB | -48 dB | -80 dB | -48 dB | -90 dB |
| 75% | -11 dB | -24 dB | -50 dB | -15 dB | -66 dB |
| 100% | 0 dB (full) | 0 dB (full) | 0 dB (full) | 0 dB (full) | 0 dB (full) |
Attenuation profiles require base station (CPU2) firmware 3.5.0 or later. Update the WVC base station via the AuralSync app before configuring this feature. Update the WVC base station via the AuralSync app before configuring this feature. See the Firmware Updates article for instructions.
Accessing the Volume Curve Setting
In the AuralSync app, open your device and navigate to Base Settings. Scroll to the bottom to find the Volume Curve selector. The current profile is shown; tap it to choose a different one. Each profile displays a visual graph of the attenuation curve so you can see the shape before applying it.
Inverse Log Profile (Default)
The Inverse Log profile is the factory default and the most commonly used curve. It matches the way human hearing perceives loudness. Volume changes feel more significant at lower levels and gradually level off as you approach maximum. This means you get fine, precise control during quiet listening and broader steps at higher volumes where small differences are less noticeable. Most users should leave this setting at its default.
Linear Profile
The Linear profile maps volume input to output in a straight 1-to-1 relationship. Every increment of the knob produces exactly the same dB change, regardless of where you are in the range. This gives you perfectly predictable, uniform volume steps from minimum to maximum. Linear mode is particularly useful when using your unit as a remote gain controller in a calibrated system, during DSP tuning sessions, or any scenario where you need to know exactly how much the output changes per step.
Audio Taper Profile (Industry Standard A-Curve)
The Audio Taper profile follows the industry-standard A-curve specification used in professional audio potentiometers worldwide. It uses a steeper exponential curve (approximately x^2.5) compared to the Inverse Log, which means volume stays very low in the bottom portion of the range and rises sharply in the upper half. This closely mimics the feel of a high-quality analog volume pot found in professional mixing consoles and audiophile equipment. Choose this profile if you prefer the classic "hi-fi potentiometer" feel.
S-Curve Profile
The S-Curve profile applies a gentle taper at both the bottom and top of the range, with the steepest rate of change in the middle. This gives you fine control at very low and very high volumes, with a broad, responsive sweep through the mid-range. It is well suited to systems where you frequently operate near the extremes of the volume range and want precision at both ends.
Competition Profile
The Competition profile keeps volume low for approximately the first 70% of the knob's travel, then rises steeply through the remaining range. This means the system stays quiet through most of the knob rotation, with the majority of the volume change concentrated in the top 30%. Designed for SPL competition use where you want a dramatic ramp to full output.
Choosing the Right Profile
| Profile | Best For |
|---|---|
| Inverse Log (Default) | Everyday listening; natural, human-hearing-matched response |
| Linear | DSP calibration, gain staging, technical tuning sessions |
| Audio Taper | Users who prefer the feel of a classic analog hi-fi volume pot |
| S-Curve | Precision at both low and high volume extremes |
| Competition | SPL competition; dramatic near-silent to full-volume sweep |
If you would like a curve not listed here, contact LF Audio. Additional profiles may be added in future firmware updates.
Volume Floor
The Volume Floor sets the quietest level the system plays at any position above 0%. It works alongside the attenuation profile above: where the profile decides the shape of the curve, the floor decides where the bottom of that curve sits.
By default the Volume Floor is Off, so the full attenuation range is used and your chosen profile runs all the way down to near silence just above 0%. Some setups, particularly those with a high source output or a lot of system gain, only produce usable volume in the upper part of the knob's travel, leaving the lower half feeling wasted. Raising the floor fixes this: pick a level such as -40 dB, and the chosen curve is remapped so the very first step above 0% starts at your floor while 100% still reaches full output. The usable range is compressed into the full sweep of the knob, so volume rolls in smoothly from the bottom instead of staying silent until you are most of the way up.
0% always mutes, regardless of the floor. The floor only affects positions above 0%.
You can set the Volume Floor anywhere from -60 dB to -20 dB, or turn it Off. A higher floor (closer to -20 dB) keeps more of the knob's travel in the audible range; a lower floor (closer to -60 dB) leaves more quiet headroom near the bottom. The floor applies on top of whichever attenuation profile you have selected, so you can combine, for example, the Inverse Log profile with a -40 dB floor.
Setting the Volume Floor
In the AuralSync app, open your device and navigate to Base Settings. Find the Volume Floor control, switch it on, and choose a level. The Volume Floor is stored on the base station itself, so it stays in effect no matter how you adjust the volume.
Because the setting lives on the base station, you can also adjust it from a paired knob (its Base Settings menu), the RTC display, and the WVC-PRO 6 base station touchscreen. A change made on any one of these is shared with all of them.
The Volume Floor requires WVC base station firmware 4.4.0 or later. Update the WVC base station via the AuralSync app before configuring this feature. See the Firmware Updates article for instructions.