Parametric EQ
User EQ is available on analogue inputs (5 bands) and speaker outputs (10 bands). Speaker presets carry a further 15 bands that you do not edit in the browser.
The front panel cannot edit EQ. It can only Reset Advanced, which turns the user bands off.
Opening the EQ
On an input or output card, the EQ section collapses to a summary:
- EQ off — no bands enabled
- N band(s) active
Expand it to show the response chart and band controls.
The chart
- Frequency 20 Hz – 20 kHz (logarithmic)
- Gain about −15 to +15 dB
- Drag a numbered handle to set frequency, and gain for Peak / Hi Shelf / Lo Shelf
Per-band controls
| Control | Range | Notes |
|---|---|---|
| Enable | on / off | Disabled bands stay stored |
| Type | see table | |
| Frequency | 20 Hz – 20 kHz | Logarithmic slider |
| Gain | −15 to +15 dB, 0.5 steps | Peak, Hi Shelf, Lo Shelf only |
| Q | 0.1 – 20 | Logarithmic. Used by LPF, HPF, BPF, Notch, Peak, Allpass |
Filter types
| Type | Typical use |
|---|---|
| Flat | Band does nothing |
| LPF / HPF | Generic low-pass / high-pass |
| LPF Butter / HPF Butter | Butterworth |
| LPF Bessel / HPF Bessel | Bessel |
| BPF | Band-pass |
| Notch | Narrow cut (correct RBJ notch) |
| Peak | Parametric boost or cut |
| Hi Shelf / Lo Shelf | Shelving |
| LPF 1st / HPF 1st | First-order |
| Allpass | Phase only (including 180°) |
These user-EQ types are not the same list as the output crossover (HPF/LPF on the Speaker Outputs page).
Copying EQ
Copy from on an analogue input copies 5 bands to another analogue input. On an output it copies 10 bands to another output. Confirm the dialog — there is no undo other than copying back or resetting.
Reset Advanced
If a channel has user EQ (or other advanced settings) applied, the front panel shows an indicator. Reset Advanced on that channel disables all of its user EQ bands and clears the flag. It does not remove a speaker preset.
Any EQ edit from the web interface sets the advanced flag again.