Ready 2 Talk offers a complete guide to understand PA 4+ Recommended Layout for Cutaway Busses through its printable installation manual.

1. PA 4+ Recommended Layout
for Cutaway Busses
Front Use Either
Mic HS 30M Headset
PSM 4C Hand Mic
HS BTC BlueTooth Headset
iPhone Connect PA's RCA out
AUX Input MP3 Player to Stereo AUX Input
iPad
Use Either Rear
HS 30M Headset Mic Ext
PSM 4C Hand Mic Factory or If Possible… Use a stereo with Rear AUX Input
HS BTC Headset Aftermarket Set Stereo input mode to AUX Input
Stereo Adjust volume as desired
Door Door
Speaker Speaker
LR RR
1 1
Speaker Speaker
+ - Connect speakers 1 & 2 + -
in Parallel on each side
#1 positive to #2 positive
+ - #1 negative to #2 negative + -
Speaker Speaker
2 2
Connect speakers 2 & 3
in Series on each side
3 #3 positive to #2 negative 3
Speaker #3 negative to #2 positive Speaker
+ - + -
Connect speakers 3 & 4
+ - in Parallel on each side + -
Speaker #3 positive to #4 positive Speaker
4 #3 negative to #4 negative 4
Note: This is called Series - Parallel wiring
If using 4 Ohm speakers the stereo will have a 4 Ohm load
If using 8 Ohm speakers the stereo will have a 8 Ohm load
Functionality
● When connected this way, set mode on Stereo to AUX Input and adjust the volume to the desired level
● When the Rear Mic Extention is connected, both mics can be used at the same time without any level or sound change