Techn. Data

Model CTA 118 Sub
Headline Active System Bass
Frequency response +/- 3 dB 42 Hz – fx
Frequency response -10 dB 36 Hz – fx
Sensitivity 1W 101 dB
Maximum SPL, @ 10% THD 130 dB @ 10% THD (half space)
subwoofer amplifier 1000 W RMS, Class D
Sat & Mid/high unit amp 1000 W RMS, Class D
Active protectiion circuits DDO™ Pro Limiter, thermal protect, short-circuit
Connections XLR female, electronically balanced & floating, DDO-Pro™ Net/ RS 485 Ethercon
LF Speaker 18″
Pole mount M20 plate
Handles 7, integrated
Optional accessories Protective cover, dolly, stack plate
Enclosure Birch plywood 18mm, 13- ply
Grille Metal grille with black acoustic foam
Finish Black polyurethane lacquer
Dimensions (WxHxD) 51cm x 73 cm x 71 cm
Weight 59 kg/ 129.8 lbs.


CTA 118
Subwoofer Dolly
The dolly for the CTA 118 subwoofer. Butterfly latches fasten down the bins; no muss, no fuss. During transport the dolly protects the active circuitry against dirt and damage.


Stack plate

Serving to connect ground-stacked CTA 118 Sub and CTA 208 units, the plate’s tilt angle adjusts in 1.5° steps up to 9° max. It is TÜV/ BGV-C1-certified.


Protective Cover
The CTA 118 SUB protective cover, a padded bag for safer transport and storage
SKU: Contour Array CTA-118 Sub Woofer Categories: ,


CTA 118 Sub

Active System Bass

An active, direct-loaded subwoofer, the 18“ CTA 118 SUB serves as the system’s powerful engine room. All the required circuitry is on board, including a 56-bit DDO-Pro™ digital controller and two 1,000-watt RMS PWM power amps. One of the power amps drives the subwoofer’s 18“ speaker; the other is configured by the controller to drive a CTA 208 mid/high unit or a ConTour Series™ CT 108, CT 112 or CT 115 enclosure.

Packing a powerful punch, the CTA 118 SUB delivers low-ranging yet clearly defined bass response, rendering impulses with great accuracy and authority even when handling the heaviest loads. Filter presets have been devised for the various setups. They fine-tune the components of each configuration to work optimally with each other, ensuring peak system performance and reliability. Simply select the appropriate filter preset on the controller, and the integrated display will immediately indicate all information of relevance to the given setting.

The internal electronic circuitry is shock-mounted on rubber grommets, while a dolly facilitates transport and affords additional protection against damage and dirt.

Facts & Features

  • Sensitivity 1W@1m (Half Space): 101 dB
  • Max. SPL peak (Half Space): 133 dB
  • Frequency response +/-3 dB: 42 Hz – fx