139B Polarity Tester

Main Features

• Unaffected by ambient noise, it can instantly determine the positive and negative polarity of any type of speaker and headphone, making it suitable for use on production lines.

• It can be connected to three different instruments (152A, 7117C, and 7116C) and is operable by a single person, saving labor and time.

• Easy to learn and use, with excellent reliability.

• Equipped with an extension device socket for positive and negative polarity indicator lights, this function is only available for models with the serial number PLxxxxxxxxx. (This socket must be connected to the Extended Pilot Model-139BL.)

Basic Specifications of Model-139B

Pulse Testing Method.

Polarity :
Pos. polarity :Green LED indicator with beep sound.
Neg.polarity:Red LED indicator with no sound.
Sensor:ECM
Five selecting switches :
WF:suitable for the woofer.
M&T:suitable for the midrange, tweeter & headphone.
Ext.1~Ext.3 : For connecting instruments.
Dim.:28 ( L ) ×9 ( H )×21 ( D ) cm.
6.Net Weight : 2.5 KGS.