Verifying phase – Staub Electronics ECA-70MIXAMP-1-120 - EPISODE - 120 WATT RACK MOUNTABLE 70 VOLT COMMERCIAL AMPLIFIER-MIXER User Manual
Page 11
ECA-70MIXAMP-1-120 Installation Manual
pg. 11
© 2012 Episode®
Verifying Phase
When proper polarity is not maintained, the speakers play at the opposite ‘time’ from each other, or out of phase. The result is audio with
lack of bass and vocals that sound thin or distant. If during or after calibrating your receiver you suspect the sound is not right and you
cannot see any markings on the wire to verify polarity is correct, try this simple test:
1. Sit in the normal listening position for the system.
2. Play some music and listen for the following characteristics.
A. Does the bass sound full and even with the other audio?
B. Do the vocals sound centered and even in volume?
If either of the answers are YES, follow steps 3 and 4 with the other loudspeakers in the system.
3. Turn off the amplifier and reverse the connections for one of the speakers.
4. Repeat your test at the same volume level. When the sound has the loudest and best sounding bass, and vocals are centered
and clear, your connections are correct and in-phase.