Just what is the compliance of Nagaoka cartridges?

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DeepEnd
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Just what is the compliance of Nagaoka cartridges?

Post by DeepEnd » 17 Oct 2018 15:20

I have managed to collect a number of Nagaoka styli (and a few bodies) and was recording a track with various types in a single body. The problem is most of them don't seem to have a sensible correlation on compliance to the product specifications (specs indicate low - medium [7.2-10 @ 100Hz est 15-20 @ 10Hz] tests show on the newer types as quite high compliance 20-26) :-

These are in a Rega RB300 (eff mass 11.5g?) with MP-11 Boron body/fasteners at 8.0g, Output typical is compared to MP110 level (assumed 5.0mV)

Stylus, . . . . . . VTF, spec O/P, O/P typical, Compliance Dyn, Static, resonance, Est Compl, Tip size, Cantilever

MP110, . . . . . . . . . . . 1.5-2.0g, 5.0mV#3, 5.0mV, 8, 18 , 7.2Hz, 26, 0.4 x 0.7 Bond., Alum.
MP11 Boron, . . . . . . . 1.8-2.3, 4.0mV, 4.9mV, 8, 20, 9.6Hz, 15, 0.4 x 0.7 ULM, Boron
MP11 Boron/Paratrace, 1.7-1.9#1, 4.0mV#2, 5.1mV, 8, 20, 8.0Hz, 20, Para, ULM, Boron
MP200, . . . .. . . . . . . . 1.5-2.0g, 4.0mV#3, 4.7mV, 7.2, 20, 7.5Hz, 25, 0.4 x 0.7 ULM, Boron
MP30, . . . . . . . . . . . . .1.3-1.8g, 3.0mV#3, 2.9mV, 10, 22, 8.0Hz, 20, 0.4 x 0.7 ULM, Boron
Notes:-
“ULM” Ultra Low Mass nude type (surface mounted on solid Boron cantilever)
#1 as tested by ESCo after re-tipping
#2 assumed same as MP-11Boron
#3 in matching MP110/MP200/MP30 body

Has anyone else measured/estimated the compliance of their Nagoaka's?

chiz
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Re: Just what is the compliance of Nagaoka cartridges?

Post by chiz » 17 Oct 2018 20:34

I don't have any Nagaokas myself but I did do some testing of compliance specs and estimates for some other brands against my own measurements, details here:

https://www.vinylengine.com/turntable_f ... 95&start=5

dahoo
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Re: Just what is the compliance of Nagaoka cartridges?

Post by dahoo » 17 Oct 2018 21:39

i would say i feel my mp150 is mid compliance. at120e tracks better on warped records than mp150 on technics 1200. but in theory, isn't mp150 supposed to be a better match for mid mass tone arm like technics 1200?

DeepEnd
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Re: Just what is the compliance of Nagaoka cartridges?

Post by DeepEnd » 04 Nov 2018 17:29

Well just to double check I refitted my A&R P77 which is supposed to have a compliance of 20 at 10Hz. Assuming my heavier counter weight (120g vs 100g) reduces the effective mass sightly from 11.5g down to 11.0g then:-

A&R P77 resonance is about 8.5 Hz which suggests a compliance of about 19-20 (20 specified) so this all seams to give the correct results then it would appear that the

MP110 stylus @ 7.2 Hz would have a compliance around 26 (8 @ 100Hz specified)
MP11 Boron @ 9.6 Hz would have a compliance around 14-15 (8 @ 100Hz specified)
MP11B/Paratrace @ 8.0 Hz would have a compliance around 21 (8 @ 100Hz specified)
MP200 stylus @ 7.5 Hz would have a compliance around 23-24 (7.2 @ 100Hz specified)
MP30 stylus @ 8.0 Hz would have a compliance around 21 (10 @ 100Hz specified)

From this it appears that the older MP/two digit styli are closer to expectation at approx 2x times the 100Hz figure but the newer MP/three digit styli are significantly higher than expected.

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