Radius / Velocity
14.6 cm
50.9 cm/s
Inner-Groove Distortion
0.8 %
OPTIMAL RIM
Low-End Phase Safety
PASS
Mono <150Hz ok
Velocity Headroom
+3.4 dB
Lathe Safe
Physical Groove Excursion & Pinch Effect Microscope
Microscopic Groove Cross-SectionHigh-energy sub-bass cuts (like 808s) near the inner label radius (5.7–7.5 cm) produce severe groove pinching and tracing distortion on conical needles. Keep heavy bass on outer tracks (12.0–14.6 cm).