Classical Mix Checker — Are You Preserving the Room, or Killing It?

Classical recordings aren't mixed like pop. There's no 808 to balance, no lead vocal to sit on top. You're capturing an acoustic event — a violinist breathing into a phrase, a timpani roll blooming in a hall — and then not wrecking it. The most common failure we see is a well-recorded session crushed into streaming-friendly loudness, the dynamic arc flattened so a pianissimo and fortissimo sit 4 dB apart instead of 18. MixDiagnose reads your file the way a mastering engineer for Deutsche Grammophon would: what you preserved, what you threw away, and which band is fighting you.

Where classical mixes actually break

Classical doesn't fight in the 2–5 kHz vocal pocket. It fights in three quieter, more fragile zones:

• 40–80 Hz. Hall rumble, organ pedals, double-bass E string. Too much and it sounds like the HVAC is on; too little and the low strings lose their floor.
• 200–600 Hz. The "warmth and mud" zone. Cello and viola body live here, but so does room buildup. A hall with a 320 Hz mode turns a cello section into a hum.
• 5–10 kHz. String bow noise, flute air, harp attack. Too bright and violins screech; too dark and the ensemble feels veiled.

Mistakes that ruin classical recordings

Loudness normalization as compression. A -14 LUFS streaming target is fine for pop; for a Mahler symphony it's vandalism. If your integrated loudness reads -9 LUFS on a Beethoven quartet, your dynamic range is gone. We measure crest factor directly so you see how much of the original arc survived.

Scooping the midrange for "clarity." A 300 Hz cut that works on pop vocals removes the cello's body on a string quartet and leaves a hole between bass and violin. We flag midrange scoop as a finding, not a style choice.

Reverb louder than the direct sound. The hall is the reverb — adding a plugin on top of room-mic capture stacks two spaces. We detect when ambient energy exceeds the direct signal at 200–600 Hz.

Brickwall limiting on transients. A timpani strike has 6–10 dB of peak above its body. A pop-style limiter shaves that off and the orchestra sounds smaller. We report true-peak and inter-sample peaks so you know what your limiter is eating.

What MixDiagnose checks for classical

• Crest factor and dynamic integrity — measured, not estimated. See the actual dB spread between quietest and loudest passages.
• Hall vs. direct balance via mid-side analysis at 200–600 Hz — is the room supporting the ensemble or smothering it?
• String harshness flagged at 5–10 kHz with severity in dB.
• Low-end floor from 40–80 Hz — present or missing on small speakers?
• Midrange scoop detection — unnatural dip in the 200–600 Hz cello/viola body region.
• Streaming fit via LUFS checker — integrated loudness and true peak vs. Spotify (-14), Apple (-16), YouTube (-14). For classical we flag anything above -12 LUFS as a red flag, not a goal.

Every finding names the frequency, dB value, and a concrete fix. The spectral analyzer shows your full frequency map overlaid with the hall's resonant modes — screenshot it and bring it back to your DAW.

Upload your classical mix — free, no signup

Full diagnosis in under 60 seconds. No account, no credit card — just your file and an honest report.