← Back to guide overview · ← Part 1
1. Position the microphone
Mount the AMI's measurement microphone at ear height in the primary listening position — driver's seat, headrest height, roughly where your head sits when driving. Use a mic stand or tripod if you have one; if not, the headrest itself works fine for a first pass.
2. Keep the cabin quiet
Close the doors and windows, turn off the engine and fans, and get out of the car if your cable length allows — or sit as still as possible if you can't. Road noise and rustling both show up in the measurement.
3. Run your first sweep
- In DSP PC Tool 6, open the RTA (Real-Time Analyzer) module.
- Select the AMI as your measurement input.
- Run a sweep of the mic at a moderate, comfortable volume — loud enough to read clearly above any residual noise floor, not loud enough to risk your ears or your speakers.
- Take 2–3 sweeps and compare them. They should look near-identical — if not, check your mic hasn't moved and try again.
4. Save your measurement
Save the measurement file before moving on — you'll feed this directly into TuneEQ and ATM in the next step, and it's worth having a saved copy in case you want to re-tune later without measuring from scratch.
Don't have a DSP amp or processor to tune yet? Browse the full Car DSP Amplifiers range or our standalone DSP processors before you start.