|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
209.193.50.41
In Reply to: RE: Empire 698... The shit has hit the fan!!!! OMG! posted by John Elison on September 25, 2016 at 23:08:17
I am guessing you have one, but there are some real cheap ones at auto parts houses to just trace the wires.
Follow Ups:
Yes, use a meter to sort out the wires. However, OP, remember to disconnect the cartridge from the headshell clips or you will fry its coils.
Edits: 09/26/16
I have tried internet searches and my reference audio books, and so far nothing. I realize that MC and MM may be different, but just an average would be fine.
I suppose you are referring to the diameter of the wire used in the coils. I don't know the typical wire size. However, the specs for the newest Audio Technica AT-ART1000 cartridge state that it uses 20-micron diameter wire wound with 8-turns for each coil.
.
.
If I am doing this right, .02 microns is equal to 52 gauge wire!That picture is great for seeing how the coils are situated by the magnets in order to induce the small stereo voltage.
Edits: 09/27/16 09/27/16
You have a typo. The wire diameter is 20-microns = 0.02-mm. However, you are correct about the gauge. A 20-micron diameter wire is 52-gauge wire.
PAR is correct that this Audio Technica cartridge is a special cartridge. Therefore, other moving coils might have different diameter wire. I don't know the typical diameter of wire used in moving coils, but the ones I've viewed under a microscope have exceptionally small diameter wire.
Good luck,
John Elison
nt
Sorry for being late to the party but my router failed :-(
Just to mention that Ortofon wind coils with wire as thin as .015 microns. Also the picture kindly posted by John Elison is of a very unusual cartridge (the AT ART 1000) and the placement of the coils and magnets is unique and is not representative of any other cartridge. The picture is great for your original question as it clearly shows the tiny size of wire involved.
nt
The reason I recommended a digital ohmmeter was to prevent damaging the cartridge coils. Digital ohmmeters operate with very low voltage and current and will probably not damage cartridge coils. On the other hand, analog ohmmeters might possibly fry the coils.
Good luck,
John Elison
I fried a Benz med output MC with my Fluke meter.
In fact, when I got crazy results on one side, I tried the other and melted it also!I've measured many MM cartridges which have much higher resistances than MCs.
I suppose that part of the reason newer/digital DVOMs can measure very low resistances accurately is that they use higher current across low resistances?
Whatever, can assure you that the Fluke 88(?) positively melted down the coils, and fairly quickly as well!
Edits: 09/28/16
I should have qualified my answer. I have a Fluke 45 DMM and it puts out nearly five-times the current as my B&K DMM when measuring resistance. The safe way to measure coil resistance on a low-output moving coil is to place a 1000-ohm resistor in series with the cartridge coil. Measure the resistor first and then place it in series with the cartridge coil. This will protect the cartridge coil.Sorry!
John Elison
Edits: 09/28/16
Don't feel bad OP... I just moved and somehow managed to damage the entire cantilever on a 100 hour Sumiko Blackbird....my wife was amazed I was so calm...she didn't realized I was just recovering from the shock!
nt
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: