Audio Database

The

ONKYO PC-1
8,000yen

Description
 
Phase checker.

That the polarity of a speaker of the whole play system from amplifier to a speaker from the first is the same has good influence for the grade of play sound.

PC-1 puts an impulse signal into a speaker, gathers the sound which came out of the speaker with a built-in microphone, and judges a polarity.
A signal can be put in from the input of amplifier and the polarity of the whole play system can also be judged.