I have had issues with obtaining power to Brand new T4S mixer when connecting to L1 ll power stand . Bose rep insisted I need a power supply ( connected to an outlet ) despite all their literature that states I can go directly from mixer to power stand. I have obtained a power supply that goes from outlet to mixer via digital main output R. I assume I use the digital main output L on T4S to go the tone match port on power stand?
We use ours all the time with t4s powered by ethernet cord from L1 model 2 power stand to the t4s ethernet jack marked "R" / Power. It is a nice approach with the sound and power over the same cord.
Having said that, if there is some problem with the power coming out of your L1 ethernet port, you can use the stand alone power supply into the t4s and connect ethernet cord from the "L"eft channel to the L1. Make sure your channel PANs are centered or panned Left.
If that fails (if your L1 ethernet port is bad), you can run a 1/4" TRS cable from the t4s "R"/Mono out to the 1/4" input on the L1 base.
Hope this helps.
- Jim