To positively insure your speakers are not phase reversed from the factory or after a repair, test them with a 1.5 volt dry cell battery. These are the same as used in a common household flashlight. Connect the plus terminal of the battery to the plus terminal of the speaker, and likewise with the minus terminal. The moment both terminals are connected, the woofer should make a very small forward excursion. If both speakers test the same, they are both in phase. The same test can be done through the speaker wire, to insure phase accuracy of wire and speaker together. Just connect the battery in place of the amp, with plus to plus as described above. This is useful if the positive and negative leads are enclosed within in a single housing, where you cannot visually verify that the color code or markings are correct.
Speaker Polarity Testing
Is it possible to correctly connect cables as marked between
speakers and amp yet still not have correct speaker polarity? Is it necessary to test polarity, and is it incorrect often?
I have read some places about reversing the wire connections
on one speaker and listening to see if sound is improved.
Is this safe? Has anyone tried this?
I would like to make sure this is safe and causes no damage before trying on my system.
speakers and amp yet still not have correct speaker polarity? Is it necessary to test polarity, and is it incorrect often?
I have read some places about reversing the wire connections
on one speaker and listening to see if sound is improved.
Is this safe? Has anyone tried this?
I would like to make sure this is safe and causes no damage before trying on my system.