DSR-SETUP-0001
Rega P3 / Rega RB330 / Audio-Technica AT-OC9XML
Three observations: two RPM / wow-and-flutter sessions and one 1–40 Hz vibration session.
RL-2026-00000133.396 RPMRL-2026-00000233.404 RPMRL-2026-0000031.362 mg RMS
Public setups
One identity, many observations
A setup keeps its identity while independent RPM and vibration measurements accumulate beneath it. Change a defining component and a new setup begins.
DSR-SETUP-0002
Technics SL-1410 mk2 / AMG 12J2 / Ortofon 2M Blue
Six observations: two RPM / wow-and-flutter sessions and four vibration sessions under different recorded conditions.
RL-2026-00000433.349 RPMRL-2026-00000533.344 RPMVibration range1.087–2.094 mg RMS
What the numbers reveal
Small movements shape a larger system
Speed consistency and low-frequency motion make hidden behaviour visible. Repeated observations can show how placement, operating state and setup changes alter that behaviour over time.
Scientific boundary
Measure motion without inventing its cause
Phone-measured vibration describes motion at the phone’s placement point. It is not a direct stylus or cantilever measurement. A calculated cartridge/tonearm resonance region adds context, but proximity between frequencies does not prove causation.
Method
Two views, kept distinct
RPM sessions describe rotational speed and unweighted wow and flutter. Vibration sessions describe 1–40 Hz motion under recorded conditions. Keeping them independent makes comparison clearer and preserves the meaning of each observation.