Another option with JL F series is to use one F series as the system master and daisy chain multiple and more economical E series. Refer to the F manual.
http://mediacdn.jlaudio.com/media/mfg/9013/media_document/live_1/f113_MAN.pdf
MonoPrice or Blue Jeans Cable for economical custom length interconnection cabling.
http://mediacdn.jlaudio.com/media/mfg/9013/media_document/live_1/f113_MAN.pdf
MonoPrice or Blue Jeans Cable for economical custom length interconnection cabling.