Deze site werkt met een 9-Volt batterij!
www.doityourself.com/stry/how-to-test-for-speaker-wire-polarity
en heeft een multimeter methode voor polariteitsmeting:
Step 4 - Multimeter
To check speaker wire polarity with a multimeter, remove the speaker wires from both speaker and receiver. Set up the speaker wire so one wires is wrapped around each terminal of the battery.
Set the multimeter up to measure DC voltage. Touch the speaker wires to the probes on the multimeter. You’ll see a negative reading if the wire from the negative battery terminal touches the positive probe on the multimeter. This will allow you to mark which wire is which and to be able to connect positive to positive-red to red-and the negative-black to black.
You do need a current in order to measure, so having the battery is vital. You also need to be sire that you don’t measure from the receiver. The simplest way is just to use the speaker and the battery. Listen to the speakers after you’ve established the correct polarity and you’ll be able to readily hear the difference.
Read more:
www.doityourself.com/stry/how-to-test-fo...larity#ixzz3LDKWz7Jt
Is deze methode bekend en correct?
