multicast across vlans not working(7850)

[ric]

I feel as though I configured it but I'm not getting the expected result.

7850 is running router firmware

router pim
ip multicast active
interface ve 30
     ip address 10.50.30.1 255.255.255.0
     ip pim
interface ve 40
     ip address 10.50.40.1 255.255.255.0
     ip pim

A device on .30 is broadcasting on 224.20.0.20:50001

An IP speaker on .30 has a multicast setting and receives the multicast audio

But an IP speaker on .40 is not receiving the multicast audio.

thanks