How to determine capacitance with the info I have

Al, thanks for the info, that is what I was looking for. It also seems to be an extremely high capaitance cable for use with a MM cartridge ?

Hi, you don't mention type of cartridge you will be using. If it is MC you don't have to worry about capacitance. If you will be playing with a MM/MI it may be worthy to have a capable meter for the tool box.

Here is a cheap example which I don't have any experience with but looks like it would do the job.

http://cgi.ebay.com/Digital-Capacitance-Voltmeter-Test-Meter-Multimeter-/320547379334?pt=2_Way_Radios_FRS&hash=item4aa21cd886

This is the one I use which also allows measurements of resistance and inductance (LCR meter). Nice meter that will last for years to come.

http://cgi.ebay.com/NEW-BK-Precision-LCR-meter-3-digit-LCD-handheld-875A-/260602942047?pt=LH_DefaultDomain_0&hash=item3cad25525f

As noted in post above you measure between ground and hot with the cables disconnected from everything but the capacitance meter.

Brad

Brad yes it will be a MM, which is what started this quest for the total, which seems to high for MM. I will check the meters out.

Thanks

Al, thanks for the info, that is what I was looking for. It also seems to be an extremely high capacitance cable for use with a MM cartridge ?

Hi Wayne,

Yes that does seem somewhat high, and the phono stage or preamp input will add a little bit more, whether it does not have adjustable input capacitance, or does have it and the adjustment is set to its minimum position.

But in your post in the current thread that was started by T_bone you indicated that your Ortofon wants to see 400pf, so you should be fine with that cartridge (and many others). And capacitance generally isn't all that critical anyway. The effects of a mismatch would be in the upper treble, as discussed in that thread.

It's also certainly possible that I'm guessing wrong as to how the cable is designed. But given the two numbers that were specified, 37pf/ft and 15pf/ft, I can't readily envision a configuration that would result in a capacitance substantially lower than what I calculated.

Obtaining a meter, though, as suggested by the others, would certainly be the best way of obtaining an accurate answer.

Best regards,
-- Al

Thanks Al, That Ortofon and many in the same series are looking for 400pf. The cartridge I am looking at now is rated at 100pf, big difference. That is what started this hunt for information. We are a distributor and sell meters. My digital does not have capacitance. I should be able to grab one with capacitance to check.