I seem to recall.
The transducers are the same, the connections are different.
The 9 has a 7-pin plug for Helix units and the 14 has a 14-pin plug for SOLIX/APEX units.
You can adapt the 14 to connect to a 7-pin, but not the other way.
You can research the connections to verify.
Thanks for your response. I’ve found that there is an adapter, but it only allows for 2d signals. Not what I’m looking for. Thanks