First, thank you so much for such a warm welcome!
Are you using the Premium Obsidian or the Obsidian Light sound board? The Premium version only works correctly when it's powered by two 14500 Li-Ion batteries. Normal AA batteries don't work! The Light version is powered by 4 AAA batteries (either rechargeable or non-rechargeable).
Also, what kind of sound do you hear? The actual "Power Up" sound of a lightsaber or just something like "Obsidian"? The second would only imply that there's power available, but it doesn't distinguish between a Li-Ion and a normal AA. With AA, you will only have light, but not sound. However, if it's the real "Power Up", and you're using Li-Ion batteries, then it might be a board or battery pack/speaker issue. I don't think it's the wires.
The sound font doesn't need to be activated in the launcher, it works right out of the box. It could be that, if you have the v4 Obsidian board, you activated the pre-loaded Silent font by accident...
Thanks for taking the time to respond. I have the premium OSB, powered by Li-Ion batteries. The sound I'm hearing is the sound of lightsaber ignition. I have a Monarch blade with everything pre-installed, and when I charge the batteries and replace them, I usually get the "obsidian" sound - which is what I was expecting when I powered up my Initiate.
I haven't installed the US sound board program on my computer, so I don't think I've accidentally activated any fonts. Unless it's something that I could have done on the board itself?