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|28th April 2003, 03:44 PM||#1|
diyAudio Moderator Emeritus
Join Date: Jun 2002
Victor MC1 open circuit
I have a Victor (Japan) MC1 cartridge.
It has gone open circuit in one side.
It seems to come apart quite nicely, such that I have been able to ascertain that it's not the thick wires!
Is there any point in continuing? Is it a reasonable cartridge?
It used to sound good to me.
Shall I chuck it?
|28th April 2003, 09:07 PM||#2|
Join Date: Apr 2003
Do you like the sound of the first JVC direct-couple phono cartridge?
Well I have listened it more than 20 years ago at the
audio store in the US, and it did sound good,
but I never listened it with our system.
As you know, the coil of the MC-1 is printed micro-coil
made by IC lithography process, and sitting near the
stylus ( I think the distance between the coil and
stylus is about 2.5mm if I remember it correctly)
to maintain phase coherency.
I do have a MC-L10 (which is the direct successor of
MC-1, the main difference is the damping system,
MC-L10 is rubber, MC-1 uses liquid ? if I remember correctly)
and the MC-L1000(I guess this was not exported outside Japan)
which the micro-coil is sitting right-on-top of the stylus !
The biggest problem with these JVC direct-coupled MC cartridges
(especially with the MC-L1000) are the reliability issue.
It was very fragile, doesn?ft allow any mishandling.
Suspension was weak, and sound may change day by day.
The average life of MC-L1000 was about 1 year,
with my experience and always be ended by open circuit.
Sonically, it was very good, especially the MC-L1000,
but there seems to have some emphasis at the top-end
(you can see rising top-end from the actual frequency response chart which was included in every cartridge).
The MC-L10 do have more of this top end emphasis than
I think the JVC in Japan cannot replace any of these cartridges
any more and will be difficult to fix it by a third party because
of the unique design.
If you are interested with the sound that those direct-coupled cartridges produce,
you may like a short jeweled cantilever phono
cartridges like Dynavector 17D2MKII.
The distance between the stylus and the coil is 1.7mm.
This cartridge is reasonably priced and uses a solid diamond
If you are going to try 17D2MKII, your arm must have anti-skating.
Air bearing liner tracking arm is ideal.
The reason is that this cartridge does have rubber
but it is not used to damp high frequency resonance as usual,
so the rubber is loose, thus it is weak to continuous side force.
The frequency response is "ruler flat" to 20KHz, no
top end emphasis and no 2-5KHz dip at all.
Some of the super expensive "long" cantilever cartridge may sound "pleasing"
with some sort of program source / speaker combination.
Some of the cartridge designer of these expensive regular designs seems
to take time and effort "balance" the sound of the cartridge,
in spite of the steady-state frequency response is not flat.
But with my experience using 1500USD, 3000USD phono cartridge
(which doesn?ft sound good with the accurate speaker)
it is my opinion that the ruler-flat steady-state frequency response of the cartridge is mandatory.
And if you want "focus" on sound, short distance between the
stylus and the coil is the way to go, which analog seems to
excel 44.1KHz chopped digital format, and with the speaker
like Beveridge electrostatic, which has flat response and superb
phase coherency, the merit of these aggressive cartridge design
is apparent, which listener could involve to music further.
|29th April 2003, 08:51 AM||#3|
diyAudio Moderator Emeritus
Join Date: Jun 2002
Wow, thank you for your detailed reply. I had not really expected anyone to know this cartridge. As you say, it is more than 20 years old (actually, this one was last in use 22 years ago. It was a reference sample used for speaker evaluation. At the end of the speaker tests I "won" it, and used it until it failed. It has been in storage for over 20 years, and I had just wondered whether it was serviceable.
I did like it at the time, although I did not have any high-end cartridges to compare it with.
From what you say, the unique construction means that it is not serviceable - never mind
Thank you for taking the time to give your knowledgeable reply.
I notice this is your first post to the forum: Welcome
|26th February 2004, 01:28 PM||#4|
Join Date: Sep 2003
Can you give me the Victor MC1 's schematic?
Thank you very mach ..
good luck everyday ...
|9th March 2004, 12:45 PM||#5|
Join Date: May 2003
Greetings Audio on line
Do you perhaps have any knowledge of the Micro Seiki Lc 80w MC
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