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RL-2026-000004 — RPM Measurement

Measured 24 August 2026 at 18:03 · Europe/London

Test state

ConditionRecorded state
Target speed33⅓ RPM
RecordNot recorded
StylusNot tracking

Results

MetricResult
Average speed33.349 RPM
Speed error0.0467%
Wow0.0168%
Flutter0.0176%
Wow & Flutter0.0243%
WeightingUnweighted

Resonance context

Calculated cartridge/tonearm resonance: 7.87 Hz, just below the preferred 8–12 Hz region. No Vibration observation is associated with this RPM measurement, so combined Resonance × Vibration interpretation is not applicable to this record.

Scientific limitation: RPM/W&F values are mechanical motion-sensor observations and are not presented as standards-certified weighted wow & flutter.

Provenance

Resonance Lab 1.0 · iPhone16,1 · iOS 26.6.1 · analysis method rpm-wf-1.0.0.

Measurement UUID: 89b9957c-9751-4d75-9946-9bd187aa641d · Author: Anonymous contributor · Publisher: Direct Sound Records.

Open the canonical structured record on GitHub.