JBL PRX418S 18" Passive Subwoofer CabinetPRX418S is an eighteen inch subwoofer which, when combined with the two way models, provides a sub sat system capable of generating 135 dB of full range, high quality audio. Features Tough DuraFlexT finish enclosure Heavy Duty 16 gauge protective screen backed steel grille

and is finished in a durable black powder coat

66 channels: 32 in / 34 out

5/8" #27 Thread Male on Both Ends

LED indication of channel clipping

materials and case design

It features one XLR mic or line input and one mono-summed Mini-jack line input on the front panels

are to be individually connected to a separate output jack

This results in identical frequency response curves and output levels at 0° and 180° sound incidence

angle) for wider coverage

Amplifier output on detachable terminal block

0 interface standard

inspired on the vintage compressors of the radio era