OPC-288 Speaker Polarity Checkers

This unit checks the polarity of loudspeaker units and makes judgment.
The result of a check is shown with a +/- LED indicator within approximately 0.2 seconds.
When the buzzer switch is set to on, a buzzer sounds if a reversed polarity is detected.
An external signal can be inputted when the selector switch is set so.

OPC-488 Speaker Polarity checker with tweeter checking

This unit checks the polarities of loudspeaker units and open voice-coil for tweeters of the speaker system.
The result of a check is shown with a green(GO) or red(NG) LED indicator within approximately 0.2seconds.
An external signal can be inputted when the selector switch is set so.

ODC-489 Partial Disconnection Checker

  ODC ‐489 is an apparatus that checks the partial disconnection state of speaker. GO /NG indication by LCD display and buzzer.