New type of MC cartridges - field coil

the thin end of the wedge
wart
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New type of MC cartridges - field coil

Post by wart » 09 Jul 2019 16:17

Link with plain information:

https://www.monoandstereo.com/2019/07/d ... ridge.html

I have heard it recently... as it's made in Lithuania (not by me).
Stylus - cactus. Works from DC ~ 9-12V. ~ 3 ohms.

vintagevinyllover
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Re: New type of MC cartridges - field coil

Post by vintagevinyllover » 09 Jul 2019 21:46

Seems a design similar to the Audio Note Io range?

wart
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Re: New type of MC cartridges - field coil

Post by wart » 09 Jul 2019 22:33

Not AN but Kondo. AN is just a new name for old product:)

No it's not similar this one is front coil. It's more close to Neumann DST. But it's not a copy.

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Re: New type of MC cartridges - field coil

Post by vintagevinyllover » 10 Jul 2019 13:28

thanks, interesting

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Re: New type of MC cartridges - field coil

Post by gofar99 » 11 Jul 2019 02:59

I worry about things that say they "fix" warped and off center LPs.

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Re: New type of MC cartridges - field coil

Post by Delta667 » 11 Jul 2019 05:25

I am sure that if Darius had been involved in writing this article, he would have written differently: the cartridge design does not allow for distortions that occur when the vinyl is offset from the center. At least, it keeps them to a minimum.

A delightful job!

At the moment I know only two masters (maybe there is someone else) who continue to work on electromagnets for cartridges. It’s much easier to install a permanent magnet. Why extra wires, power supplies?
No, for true fans of good sound there are no obstacles and difficulties for which they are not ready to go to maintain and continue the traditions in the world of "higher" sound ))

In my opinion, the advantage of an electromagnet is the ability to adjust an uneven magnetic field (it is always uneven) in a particular magnetic gap of the cartridge.
Moving a permanent magnet, changing the width of the magnetic gap and moving the coils is not always possible.

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Re: New type of MC cartridges - field coil

Post by GuidoK » 09 Dec 2019 20:25

This cartridge seems to be a lovechild between the Kondo IO field coil and the audio technica ART-1000 :mrgreen:

Very interesting. Can he crank up the coil voltage/magnetic field strenght to the point that we can get mm like output voltages with LO-MC like inductance? =D> :D

wart
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Re: New type of MC cartridges - field coil

Post by wart » 10 Dec 2019 10:26

I have saw it working on 150 mA ... but it can be harmfull for suspension due to excess of heat so not recommended to exceed 130 mA.
Now output is circa 0,2 mv with 3 ohms coils and ~ 100 mA if I do remember right...
As about childhood is more less at very beginning it was Neumann DST later on Ikeda cantileverless designs. But at very end it's different - own breed of design.
I know he never saw guts of Kondo Io FC.

wart
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Re: New type of MC cartridges - field coil

Post by wart » 10 Dec 2019 10:31


wolfie62
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Re: New type of MC cartridges - field coil

Post by wolfie62 » 11 Dec 2019 14:16

What about extra weight of power wires, or those extra wires interfering with proper tonearm movement or damping?

wart
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Re: New type of MC cartridges - field coil

Post by wart » 14 Dec 2019 09:58

I have used it on Jelco 10 ich which is medium mass, with extra weight without problems in AS. And wires which I used for DC was thin so I have left them as is as at first, later on fixed towards end of tonearm tube with tape.
For permanent installation I am thinking to put wires inside the armtube.

GuidoK
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Re: New type of MC cartridges - field coil

Post by GuidoK » 14 Dec 2019 12:30

Do you know the 10Hz compliance, cartridge weigth and inductance?

wart
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Re: New type of MC cartridges - field coil

Post by wart » 14 Dec 2019 14:08

Output voltage at 1000 Hz 0.2 mV/ 5 cm/ sec
Coil Impedance 3 Ohm
Recommended load impedance > 10 ohm
Cantilever Cactus with bonded aluminum tube
Stylus Highly polished nude 0,5 mil conical
Frequency range 10-24000 Hz
Separation > 28 dB at 1KHz
Compliance (typical) 5 cu
Magnetic field strength Electromagnetic 1.200 Gauss/ 12 V
Tracking ability at 315Hz, 2.8 g VTF ≥ 80 µm
Electromagnet power supply; V or mA < 13 V DC; <140 mA
Stylus pressure range 2.5-3.5 g
Weight 26 grams

wart
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Re: New type of MC cartridges - field coil

Post by wart » 14 Dec 2019 14:10

P>S> mine tracked 100 µm, that was weird for such piece of metal.

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Re: New type of MC cartridges - field coil

Post by wolfie62 » 14 Dec 2019 14:18

It weighs 26 grams?? Tracks at 3 grams?

Not a cartridge for me.

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