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JBL® PRX815XLF Self-Powered Extended Low Frequency Subwoofer-PRX815XLFW Residential & Commercial Electronics, IL, 62711
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![I just got the jbl flip essential and I wanted to turn on low frequency mode and it said 31031 and I dont know why'd it said that, can someone help me I just got the jbl flip essential and I wanted to turn on low frequency mode and it said 31031 and I dont know why'd it said that, can someone help me](https://external-preview.redd.it/ix_rLP_n5_8beGLSxnTIwrBNMbvAMMquv5VEeJYqkT0.png?format=pjpg&auto=webp&s=fe2365714a789c3f1bb4281220686251d15168b4)
I just got the jbl flip essential and I wanted to turn on low frequency mode and it said 31031 and I dont know why'd it said that, can someone help me
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JBL 4739 Subwoofer Low-frequency Section for 4732 of Three-Way Biamplified or Triamplified ScreenArray Loudspeaker System - Thr
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