B&C 18TBX100-4 4-Ohm 18" Subwoofer 2400 Watts Low Frequency 35 - 1000 Hz SUB .
Amazon.com: Seismic Audio - 18" Raw Subwoofers/Woofers/Speakers - PA DJ Pro Audio Replacement Sub - 750 Watts RMS - 240 oz Magnet - 8 Ohms - 4" Voice Coil : Musical Instruments
18-in next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration - Walmart.com
RE Audio XX 18 Mini Marty 11 cu ft 18 hz Subwoofer | AVS Forum
DS18 SQ82A Amplified 8" Car Audio Subwoofer with High End Aluminum Enclosure 1200 Watts
Celestion FTR18-4080FD 18" inch Low Frequency Subwoofer 1,000 Watt RMS 8-ohm | eBay
Amazon.com: Sound Town 18" 500W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-18120DR) : Electronics
Behringer | Product | DR18SUB
B & C Speakers 18 in. 3400W Power Soft Woofer - Walmart.com
Amazon.com: RCF L18P300 18-Inch Car and DJ Woofer, Black : Electronics
Did You Know: A Rotary Subwoofer can Reproduce a Tiger's 18 Hz Roar | B&H eXplora
Rogue Car Audio Vandal 18 – 1200 WATT 18 inch Subwoofer – Droppin HZ Car Audio
G18-Sub - Coda Audio
STLF-1804-8 | 18" 450W Raw Woofer Replacement Speaker, 4" Voice Coil, 8-ohm – Sound Town
Procella V18 subwoofer low frequency performance to 11Hz.
Procella V18 subwoofer low frequency performance to 11Hz.
4 x B&C 18TBX100 18" Low Frequency 2400W Subwoofer 8-Ohms 97.0 dB 35 - 1000 Hz
SoundQubed 18" HDX4 Series Subwoofers – Droppin HZ Car Audio
Aluminium Neodymium Dj Speaker 18 Inch, 45-3500 Hz
The Procella V6 subwoofer extending below 18Hz (bass module for P28)