DM7X to external speaker connection not working.....

Just got the DM7X and a transactive drummer speaker for my son for x-mas. I have tried to use a TRS cable from the mono/L output from the DM7X to the input on the speaker, nothing. I tried another cable that i have which is a single TRS (hooked up to the drum) to a dual non-TRS hooked up to the speaker, still nothing. I am getting no sound what so ever. Do i really need 2 TRS cables running from the drum unit to the speaker to make it work correctly? The DM7X works great with headphones, any advice is appreciated.
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