Alto TS218S 18 1250W Powered Subwoofer

Alto TS218S 18 1250W Powered Subwoofer

  • Vendor:Alto Professional
Availability: Out of Stock
R 10,999.00
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The Alto TS218S is a 18" powered subwoofer designed to provide adjustable low-frequency reinforcement for sound engineers and DJs in live stage, theater, and club setups.

Class-D amplification drives the 18" high-excursion woofer to produce 1250W of peak power output and a frequency response of 35 to 95 Hz.

The combo jack inputs allow for XLR or 1/4” connections. Balanced analog outputs are available on XLR 3-pin jacks. The built-in EQ controls include a selectable high-pass filter and a switch for extended low-frequencies, giving you the ability to tune the subwoofer to suit your preferences. LED indicators allow easy identification of the selected settings and power, signal, and limit status. The clip, thermal, and transducer overdrive protection keep the subwoofer safe.

The internally-braced plywood cabinet features a front port and a 35mm mounting socket. Integrated and recessed carry handles simply transport between gigs. The TS218S ships with an IEC power cable.


  • 1250W of peak power output
  • Custom-engineered Class-D amplifier with passive cooling design (no fan) 18" high-excursion woofer
  • Two XLR-1/4" combo inputs 
  • Two balanced XLR line outputs
  • Polarity reverse, full-range output, and extended LF controls
  • Electronic clip, thermal, and transducer overdrive protection
  • Rugged, internally-braced, front-ported plywood cabinet
  • Integrated 35mm speaker pole socket
Output Power 1250 W peak, 625 W continuous
Transducer 18" woofer
3" (76 mm) voice coil
Frequency Response 35 to 95 Hz (-10 dB)
Maximum SPL 131 dB @ 3.3' (1 m)
Connections 2 x XLR-1/4" (6.35 mm) inputs
2 x XLR output
IEC power cable input
Input Level Line +4 dBu (nominal)
External Controls Volume control
Signal/clip limiter with LED
Polarity-reverse switch
High-pass filter switch with LED
Extended low-frequency switch with LED
Power switch with LED
Protections Electronic clip
Thermal and transducer overdrive protection
Enclosure Internally braced plywood cabinet
1.3" (35 mm) mounting pole socket on top panel
Power Connections Standard IEC cable
Input Voltage 110 to 120, 220 to 240 VAC; 50/60 Hz
Consumption 450 W
Fuse T6.3AL 250 VAC (110 to 120 V) or T3.15AL 250 VAC (220 to 240 V)
Dimensions 26.8 x 20.7 x 24.8" (680 x 525 x 630 mm)
Weight 70 lb (32 kg)
Packaging Info
Package Weight 83.0 lb
Box Dimensions (LxWxH) 30.0 x 28.8 x 25.0"