No, as that wouldn't work, the subs Amplifier needs a power source to even operate (turn on) with a power source, this method as demonstrated wouldn't work. Hope I answered your question :)
@@hzd1494 Thanks for answering. To clarify, the JBL party box doesn't have a built in amp? I wonder how they are powered .I don't understand these things so bare with me
No I'm saying the JBL partybox 300 has a built in Amplifier just like the JBL Bass pro 12 subwoofer, I believe you were getting the 2 mixed up with each other