Tuning DSP Tuning
Connect your processor directly to your browser via USB — no drivers, no software. Then edit EQ, set crossovers, adjust time alignment, and write changes to the DSP in real time.
On this page
How the DSP Connection Works
Tuning Labs uses the browser's built-in WebHID API to talk directly to your DSP over USB. This means:
✅ What you don't need
- No driver installation
- No software download
- No companion app
- No bridge server or localhost proxy
✅ What you do need
- Chrome or Edge browser (Firefox/Safari don't support WebHID)
- USB cable from your computer to the DSP's USB port
- A vehicle profile with the correct DSP model selected
Connecting Your DSP
Channel Selector and the Mixer
At the top of the DSP Tuning panel, you'll see numbered tabs for each output channel of your DSP (CH1, CH2, CH3, etc.). These correspond directly to the DSP outputs — not speaker role names.
The mixer popup — shows all DSP channels with their input routing and level controls.
The Mixer popup (click the mixer icon) shows:
- Input routing — which input signal (IN1 through IN8) feeds each output channel
- Level faders — output level per channel (0–80)
- Wired status — channels with speakers wired are highlighted
Parametric EQ
Each channel has a full parametric EQ. By default you'll see a set of EQ bands — each with three controls:
| Control | What It Does | Range |
|---|---|---|
| Frequency (Hz) | Center frequency of the EQ band | 20 Hz – 20,000 Hz |
| Gain (dB) | Boost or cut at that frequency | -12 dB to +12 dB |
| Q Factor | Width of the bell curve — higher Q = narrower, more surgical | 0.5 to 16+ |
Crossovers
Crossovers divide the frequency range — sending the right frequencies to the right speakers. Each channel has independent crossover controls:
| Control | Description |
|---|---|
| High-Pass Filter (HPF) | Removes frequencies below the cutoff. Used for tweeters and midranges to protect them from low bass. |
| Low-Pass Filter (LPF) | Removes frequencies above the cutoff. Used for subwoofers and woofers. |
| Crossover Frequency | The -3dB point where the filter begins cutting |
| Slope | How steeply it cuts — 12 dB/octave, 24 dB/octave, or 48 dB/octave (higher = more aggressive separation) |
Time Alignment
Time alignment compensates for the fact that speakers are different distances from your ears. By delaying the closer speakers slightly, all sounds arrive at your ears at the same time — dramatically improving imaging and soundstage.
Tuning Labs expresses time alignment as milliseconds of delay. The further a speaker is, the less delay it needs (because sound naturally takes longer to reach you from further away).
The AI Advisor's Tuning Advisor mode can calculate time alignment delays automatically based on your vehicle dimensions. See Chapter 10: AI Advisor.
Saving and Loading Presets
Your DSP's internal memory holds presets — complete snapshots of all EQ, crossover, time alignment, and level settings. From the Presets section in the DSP panel:
- Save to DSP — writes the current state to one of the DSP's internal preset slots
- Load from DSP — reads a saved preset from the DSP back into the tuning panel
- Export — saves a JSON copy of the preset to your account (backed up in the cloud)
- Import — loads a previously exported preset into the current channel layout