Car audio SPL · sub band

SubCut/SPL

Load a track, see where the bass actually is, cut out the sub band — then retune it to where your enclosure hits hardest. What played at 40 Hz can go to 26. Everything runs in your browser.

Nothing is uploaded.
The music never leaves your machine: decoding, analysis and WAV cutting all happen locally, in your browser.

Demo signalgenerated

14.0 s · 48 000 Hz · 2 channels

Drop a file here, or pick one. Supported: WAV, MP3, FLAC, M4A, OGG.

Spectrum and sub band

average spectrum of the track response of the filter you set sub band — drag the handles where it lands after the rebass

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Analysis in progress…

Sub band settings

Low cut

High cut

Slope

Presets

Mono sumThe sub is mono anyway — summing the two channels gains a few dB and stops them cancelling each other.

Rebass — retuning

Shift the bass lowerIt lowers the pitch of the cut band; the tempo and the upper band stay put.

What plays here

Should move here

Enclosure tuning — common targets

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Preview

0:00 / 0:00

Output level

Gain 0.0 dB — applied to the sub in the mix

Normalise to -0.3 dBFSOn export the peak is brought under the ceiling, so the head unit will not clip it.

Your computer speakers will not reproduce anything below 30 Hz — the meter still sees it. Check on headphones or in the car.

Export

Bit depth

Bass across the track

time × frequency, 10–160 Hz

Top: every bass note in the track. Bottom: how much energy falls inside the cut band — click to seek.

What plays between 20 and 100 Hz

5 Hz bands in the original track

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