Jensen JPA600 Propietario/Manual De Instalación página 2

The JENSEN JPA600 is a universal public address system that
can be utilized as a stand alone PA(when connected to speakers)
or operate in conjunction with any existing radio/speaker set up.
The JPA600 system amplifier connects in line between the
vehicle's radio and the installed speakers.
The installed radio will operate normally. When the microphone
is activated by the "Push to Talk"(PTT) switch on the microphone,
the speakers are electrically disconnected from the radio and
engaged with the PA.
The microphone triggers activation of the PA through the same
speakers(muting/overriding the radio source).