1. The high ceiling speaker
is divided into 2 kinds of pressure and general impedance.
2.If the voltage is fixed, you will remove the fixed voltage transformer and connect it to the common amplifier. The connected horn has the problem of limiting impedance matching.
3. If it is the common impedance, then you can directly connect to the PA system integrated amplifier.
4. It is better to connect the PA system integrated amplifier.
The general constant pressure speaker is mostly 70V and 100V these two kinds of voltage. Taking the most side of the two terminals is 100V, it is estimated that the red line is the 100V terminal, the rest is 70V. If it is not clear, it can be measured with a multimeter. The one with big resistance is the 100V.