Overview
The WVC wireless encoder knob is the handheld controller that communicates with your base unit. It is available in multiple variants and supports up to six weeks of battery life between charges. This guide covers knob operation, controls, modes, and accessories.
Knob Variants
| Variant | Encoders | Display | Best For |
|---|---|---|---|
| Single Knob | 1 | 1 OLED 128x128 | Simple systems with one volume zone |
| Dual Knob | 2 | 1 OLED 128x128 + 1 OLED 128x32 | Two-zone systems (for example, mains + subwoofer) |
| Concentric Knob | 2 (concentric shaft) | 1 OLED 128x128 | Two-zone control in a compact form factor |
| Quad Knob | 4 | 1 OLED 128x128 + 1 OLED 128x32 | Four-zone independent control. The two inner encoders are rotate-only; the two outer encoders also support click actions. |
All knob variants are compatible with all WVC base station models. See Channel Groups and Multi-Unit Control for how encoders map to zones.
Controls
Single Encoder Knob
- Rotate: adjust volume for the active channel group.
- Short press: action depends on the Click Function setting (see callout below). By default the short press toggles between Slow Mode and Fast Mode.
- Double-click: cycle to the next channel group. The display shows the group's custom name (for example, "Front", "Sub") if one has been set, otherwise "Group 1", "Group 2", etc.
- Long press: open the settings menu.
Click function: The short-press action is configurable in the LF Audio AuralSync app. Options are Change Speed (default, toggles Slow / Fast Mode) and Mute (short-press mutes and unmutes the output).
Dual Encoder Knob
- Top encoder: controls the first channel group (same controls as Single Knob)
- Bottom encoder: controls the second channel group independently
- Double-click either encoder: advances to the next channel group. Whether the two encoders move together or independently depends on the Channel Group mode (see Mapping Encoders to Channel Groups below).
Concentric Knob
The Concentric knob places two encoders on a single concentric shaft. Both the outer and inner encoders follow the same control pattern as a Dual knob: rotate, short press, double-click, long press.
Quad Knob
The Quad knob exposes 4 encoder positions, each mapped to its own channel group. All four encoders rotate to control volume. The two outer encoders support click actions (short press, double-click, long press); the two inner encoders are rotate-only.
Mapping Encoders to Channel Groups
On the Dual, Concentric, and Quad knobs (firmware 4.1.2 or newer), a Channel Group setting in Knob Settings controls how the encoders map to your channel groups:
- Linear (default): the encoders move through your groups together.
- Dynamic: each encoder advances to the next group on its own.
- Manual: you pin each encoder to a fixed group using the Assign Encoders... sub-menu, and the assignments stay put.
By default the encoders spread evenly across however many groups you have and re-balance automatically when you add or remove a group. For example, on a Quad knob with two groups the left knob controls Group 1 and the right knob controls Group 2; with four groups each ring controls its own group. See Channel Groups and Multi-Unit Control for the full walkthrough.
Volume Modes
Slow Mode
Each click of the encoder changes volume by approximately 1%. Use this for fine-tuning.
Fast Mode
Each click changes volume by a configurable percentage (default: 4%; adjustable from 2% to 50% via the LF Audio AuralSync app or on the knob's settings menu). Use this for quick, large adjustments. For example, jumping from 100% to 0% in 10 clicks when set to 10%.
Battery and Charging
- Charge the knob for approximately one hour before first use.
- Battery life is up to six weeks between charges.
- Charge using the included USB-A to USB-C fast charging cable.
- The knob automatically sleeps when not in use. There is no need to turn it off. Leave it on at all times.
- The sleep timeout is configurable in the AuralSync app.
- To turn the knob on for the first time, use a small screwdriver or similar tool to press the button on the bottom of the unit.
Temperature care: Like any lithium battery, the knob's cell lasts longest and performs best at normal room temperatures. Prolonged extreme heat (for example, a vehicle parked in direct summer sun) or extreme cold can permanently shorten its battery life and can temporarily reduce runtime and wireless range until the knob returns to a comfortable temperature. If you live somewhere with very hot summers or very cold winters, bring the knob indoors rather than leaving it in the vehicle for long stretches. Its near-instant wake from sleep means taking it with you and dropping it back on its mount takes only a moment.
Auto Shutoff and Hardware Sleep Mode
The knob includes an optional hardware sleep mode that powers down the knob at the hardware level after a configurable period of inactivity. This is distinct from a simple display timeout: the entire knob enters a low-power hardware state.
Configuring the timeout:
- The auto shutoff delay can be configured on the knob itself (range: 10 to 240 seconds) or in the AuralSync app.
How it works:
- When the knob has been idle for the configured duration, it enters a deep hardware sleep, consuming almost no power.
- To wake the knob, simply turn the encoder. The knob wakes in under a second when it is still on the current channel. If interference is high, a channel re-scan may take a few seconds.
- There is no need to manually power the knob off when leaving your vehicle. Hardware sleep handles battery conservation automatically, even if the knob is left in the car for days.
Because wake-up is nearly instant and battery consumption in sleep is negligible, most users leave the knob powered on at all times and rely entirely on hardware sleep for battery management.
Competition Mode
When Competition Mode is enabled (via the AuralSync app or the base station settings), the knob display stays on continuously and never sleeps. If the knob disconnects from the base unit while Competition Mode is active, the system mutes or limits volume depending on the configured mode. This is useful during SPL competitions or shows where you need constant visibility and controlled behavior.
Clip Warnings on the Knob Display
Starting in firmware 3.10.0, the knob shows live clip warnings reported by the base unit so you can see input clipping at a glance without opening the app or looking at the WVC display.
- Volume screens: A CLIP indicator appears next to the temperature reading on every screen as soon as any input is clipping. This is a system-wide indicator. If any RCA input is being driven into clipping, you will see it here.
- FFT / Equalizer screen (PRO only): A per-channel CLIP marker appears on each input panel that is currently clipping. This lets you see exactly which channel is being overdriven so you can dial back the right output on your source or DSP.
- Severity: The CLIP marker grows as the level of clipping increases: first as plain text, then as a boxed marker, then as a filled badge. A filled badge indicates sustained, severe clipping that should be addressed immediately by reducing the source level.
What to do when you see CLIP: Reduce the volume on your head unit, DSP, or upstream source until the indicator clears. Persistent clipping degrades sound quality and can stress amplifiers and speakers, especially at low frequencies.
Real music can briefly hit clipping on transient peaks without sounding bad. A solid, steady CLIP marker is the one you want to address. Brief flickers during loud passages are usually fine.
Note (firmware 4.1.0): On Knob firmware 4.1.0 or newer, when paired with a WVC-PRO or WVC-PRO 6 base on firmware 4.1.0 or newer, the Knob settings menu adds a Clip Detection item with four levels (Off, Low, Medium, High). This controls how readily the CLIP indicators light up. The value syncs with the WVC touchscreen and the AuralSync app, so changing it on any one surface updates them all. See Signal Analysis Features for what each level does.
Factory Reset
Long-press the encoder to open the menu, navigate to Advanced > Factory Reset > Reset, and confirm. This clears pairing and saved settings, and returns the knob to its first-boot state.
Smart Home Menu
Knobs with firmware 3.9.0+ have a Smart Home menu (Main Menu > Smart Home) where the WVC base station's home-mode state can be toggled and re-paired. See Smart Home Integration.
Knob Mounts and Cases
All mounts use double-sided tape and built-in magnets to secure the knob in place. When installing a replacement mount, ensure the two magnets in the holder base are oriented to attract (not repel) the magnets in the knob before pressing them fully into place.