W-181BP

Active line array subwoofer — a single 18″ woofer with 4″ voice coil reaching down to 35 Hz at 132 dB, in a rugged plywood enclosure for a flyable, seamless low-end extension of your main hangs. Onboard DSP handles crossover, tuning and driver protection.

132 dB

Max SPL

18″

Woofer

35 Hz

Low end

122 lb

Net weight

Request a quote $2,099 ex. VAT

Full specifications (datasheet)

Type	Line array subwoofer system
Frequency response	35 – 300 Hz (±3 dB)
Power capacity	600 W RMS / 2400 W peak
Sensitivity	103 dB (1 W @ 1 m)
Max SPL	132 dB
Driver	1× 18″ woofer, 4″ voice coil
Nominal impedance	8 Ω
Connectors	2× speakON NL4MP
Enclosure	Plywood
Finish	Textured high-density polyurethane coating
Dimensions (W×H×D)	22.1 × 22.7 × 27.2 in
Net weight	122 lb
Gross weight	131 lb

✓ Confirmed from the W-181BP manufacturer datasheet

Subwoofer · W-181BP

Weight you feel, not hear

Low end is the emotion of live sound. Done right, you never notice the box — only the impact.

Everyone remembers the kick in the chest. Nobody remembers the subwoofer that produced it — and that's exactly the point. The W-181BP was built to deliver low end that lands as feeling, not noise: fast, tuneful, and there the instant the transient asks for it.

Transient speed over sheer size

Loose bass smears every beat that follows it. A cabinet and port tuned to stop as sharply as they start keep kick, bass and floor-toms distinct, so the low end drives the groove instead of drowning it. Control is what separates a professional sub from a loud one.

Move real air, keep it clean

Long-excursion loading and a low-turbulence port let the enclosure move the air a room actually needs without the port noise and compression that give big bass a bad name — headroom that stays composed when the set peaks.

"You should feel the low end in your chest, never hear the box working."

Fly them or ground-stack them, run them cardioid to pull energy off the stage, and cross them to a hang of W-110BP — our engineers phase-align the whole system so the handoff is seamless.

TSF Engineering — System Notes

W-181BP

Weight you feel, not hear

Transient speed over sheer size

Move real air, keep it clean

Let's build your rig.