If you still run passive and are looking for some single 18" subs, PSSL has special pricing today for the JBL STX818S at $599.99 ..
JBL STX818S 18-Inch Bass Reflex Subwoofer The STX800 Series was designed to bridge the space between light-duty portable PA speakers and flown full-size line array tour sound systems. Our goals at the inception of this project were simple: Offer a high performance, high density system solution...
- 18 in. Super Vented Gap woofer for extended low-frequency output.
- Large port area for reduced distortion.
- 20 mm threaded pole socket for solid, secure satellite speaker mounting.
- Rugged DuraFlex coated enclosures sized to be truck pack friendly.
- 14-Gauge steel grille lined with acoustically transparent cloth.
- Frequency Range ( –10 dB): 35 Hz-250 Hz
- Frequency Response (± 3 dB): 50 Hz-120 Hz
- Sensitivity (1W/1m): 96 dB
- Power Rating: 1000 W / 2000 W / 4000 W
- Rated Maximum SPL: 132 dB SPL Peak
- Nominal Impedance: 8O
- Input Connectors: Two NL4
- Operational Modes: Subwoofer
- Dimensions (H x W x D): (22.0" x 22.4" x 28.3")
- Net Weight: 45 kg (100 lbs)