Competitors ask me this at nearly every event: should you turn up with a measurement mic and an RTA (Real Time Analyzer), or just tune by ear against your reference tracks and trust your ears on the day? From the judging side of the table, the honest answer is both — just not in the way most people assume.
EMMA Sound Quality is judged by ear, not by a meter
A judge doesn't walk up to your car with a measurement rig. Scoring happens sitting in the seat, listening critically against the EMMA Sound Quality scorecard — tonal quality, staging, imaging and the rest of the Audio Wheel categories. No frequency response graph gets attached to your result. So if the question is "will a dead-flat RTA trace win me medals", the answer is no — a flat trace with poor staging and a harsh top end will still score poorly.
So why do serious competitors still measure?
Because getting a car to sound right by ear alone, from a cold start, in a cabin full of glass and reflective plastic, is slow and easy to get subtly wrong in ways your ears quietly compensate for. That's where a measurement tool earns its place — not as a scoring device, but as a shortcut to a sane starting point before the real ear-work begins.
I tune HELIX and MATCH DSPs with Audiotec Fischer's AMI (Audio Measurement Interface) for exactly this reason — it's a calibrated mic and interface built to pair with their DSP tuning software. It gets a system's frequency response, time alignment and phase roughly sorted in minutes rather than hours of guess-and-check.
Where a measurement tool genuinely helps
- Flattening gross tonal errors — a 6dB hole or peak you'd otherwise chase by ear for an hour
- Getting time alignment between drivers into the right ballpark before fine-tuning
- Giving you a repeatable baseline to return to if a setting gets knocked between rounds
- Spotting a blown driver or a wiring fault before you waste your judging slot chasing a problem that isn't tuning at all
Where it can mislead you
- A perfectly flat measured response often sounds thin or clinical in a real car — most experienced tuners aim for a gentle house curve, not a ruler-flat line
- Soundstage and imaging — see soundstage and imaging in EMMA judging — aren't something an RTA measures at all; that's positional, a function of level and time matching between channels, and it's tuned and judged by ear
- A judge scores what they hear from that seat, not what your laptop says the microphone heard three feet to the left of it
Treat measurement as the first 80% of the job, and your ears — backed by proper reference listening — as the last 20% that actually moves your score.
What I'd actually recommend
Measure first to get tonal balance and time alignment into the right territory, then spend the rest of your tuning time on reference tracks doing the fine adjustments no RTA can make for you. If you're building a system around a HELIX or MATCH DSP and want help setting up measurement-based tuning properly, that's exactly the kind of thing we help customers with — see our DIY install page or get in touch via contact us.
Written by Pete — Integrated Audio
Pete is the founder of Integrated Audio and a Certified International EMMA Head Judge, judging EMMA Sound Quality and Installation competitions in Australia and internationally. He writes from the judging side of the table, drawing on hands-on experience building and installing HELIX, MATCH and BRAX car audio systems.