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Ortofon 2M Red

MM cartridge

Published figures

Type
MM
Mass
7.2 g
Compliance
20 cu dynamic @ 10 hz
Inductance
700 mH
DC resistance
1300 Ω
Recommended load capacitance
150–300 pF

Checked against the manufacturer's published specification.

Open in the resonance calculator

Check its capacitive loading →

On the Clear Wave — 11 g

8.2 Hz
481216 Hz

In the 8 to 12 Hz band: above warp and footfall frequencies, below the audible range. This is where you want it. The pairing is well matched.

With the ceramic headshell spacer (13 g): 7.8 Hz

Assumes 0.5 g of mounting hardware.

On other arms

Arm effective massResonance
8 g 9.0 Hz ✓ in the 8–12 Hz band
10 g 8.5 Hz ✓ in the 8–12 Hz band
12 g 8.0 Hz ✓ in the 8–12 Hz band
14 g 7.6 Hz below the band
16 g 7.3 Hz below the band
20 g 6.8 Hz below the band

Figures are as the manufacturer publishes them. Compliance measured at 100 Hz or quoted as static is converted to an estimate at 10 Hz and marked with a tilde; treat those results as approximate. Suspensions also vary between samples and soften with age, so a calculated resonance is a guide, not a verdict. Spotted an error? Tell us at info@boolaudio.com and we will check it against the source.

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