VTX A6/B15

The VTX A6s and VTX B15s are passive, which means they only need one channel of amplification to function.  They use the NL4 outputs on the back of the amps.  Since the NL4s on the back of the amps send 2 channels, we can use the A/B switches on the back of the A6s and B15s to switch channels without running 2 NL4 cables per stack of 8 A6s or 4 B15s max.  With the 4x3500s being 4 channel amplifiers, you can run 16 VTX A6s or 8 VTX B15s per amp.