Tools · Cartridge database

Linn K9

MM cartridge

Published figures

Type
MM
Mass
7.1 g
Compliance
12 cu dynamic at 10 Hz
Recommended load capacitance
200 pF
Open in the resonance calculator

On the Clear Wave — 11 g

10.7 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): 10.1 Hz in the 8–12 Hz target band

Assumes 0.5 g of mounting hardware.

Tonearms that suit it

11 of the 12 arms in our register that this cartridge can be mounted on put it between 8 and 12 Hz. Closest to the middle of the band first.

TonearmResonance
Bool Audio Clear Wave (with ceramic spacer) 10.1 Hz
Linn Ekos SE 10.5 Hz
Linn Ittok LVII 10.5 Hz
Linn Ekos 10.5 Hz
Rega RB300 10.5 Hz
Bool Audio Clear Wave 10.7 Hz
Naim ARO 10.7 Hz
Rega RB330 10.7 Hz
SME Series V 10.8 Hz
Linn Akito 11.0 Hz
Ortofon AS-212R (with LH-9000 headshell) 8.2 Hz

On other arms

Arm effective massResonanceVerdict
8 g 11.6 Hz ✓ in the 8–12 Hz band
10 g 11.0 Hz ✓ in the 8–12 Hz band
12 g 10.4 Hz ✓ in the 8–12 Hz band
14 g 9.9 Hz ✓ in the 8–12 Hz band
16 g 9.5 Hz ✓ in the 8–12 Hz band
20 g 8.7 Hz ✓ in the 8–12 Hz band

Figures are as published, with the measurement standard recorded where the maker states it and assumed from convention where they don't. 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 drift with age, so a calculated resonance is a guide, not a verdict. And a resonance figure only means something if the cartridge can be mounted at all: Ortofon's SPU range needs a tonearm with a removable bayonet headshell, so those rows say so instead of showing a figure for the Clear Wave. Spotted an error? Tell us at info@boolaudio.com and we will check it against the source.

Manufacturer and cartridge names are the trademarks of their respective owners. Bool Audio is independent of them all, and none has endorsed this database.

← All cartridges

Who makes these

Bool Audio is a father and son making hi-fi components in a small UK workshop. We build the Clear Wave unipivot tonearm and the Clear Wave 2.0 tonearm cable, both for the Linn LP12. These calculators began as our own bench arithmetic. They are free to use, there is nothing to install, and they take no view on which cartridge or tonearm you should own.