Combined LF / Sub solution for Carys column systems

TransducersLF : 1 x 15″
SPL peak / 1m (measured)137dB (preliminary)
Weight35kg / 77lbs
Share this product


CARYS C15LS is a passive LF / Sub extension for the CARYS C6 column loudspeaker.

A locking mechanism ensures stability and super-fast, plug ‘n play setup.

A leading edge 15” neodymium LF transducer with Tetracoil technology allows C15LS to deliver high SPL and excellent efficiency. The LF / Sub features a naturally cardioid tuned vent, allowing it to be deployed discreetly close to walls and corners without sacrificing audio clarity.

C15LS can be powered by AUDIOFOCUS A Series rack amplifiers with dedicated SCIO presets. Powersoft Armonia presets are also available.

CARYS C15LS is built in Belgium by skilled craftspeople and state-of-the-art machinery before being coated in tough, weather-resistant polyurea to safeguard your investment.


  • 15” neodymium driver
  • Combined LF / Sub
  • Streamlined system for fast setup / installation
  • Cardioid vent
  • Tetracoil technology delivers more output and less distortion than comparable designs

Technical specifications

DescriptionCombined LF / Sub speaker
Transducers LF: 1 x 15”
Frequency range (-6dB)40Hz – 90Hz
SPL Peak (1)137 dB (preliminary)
ProcessingDedicated AUDIOFOCUS SCIO and Armonia/Powersoft presets
RiggingLocking connector for a Carys C6 Colum
Connectors2 × 4-point speakON + link thru NL4 for colum output
Nominal Impedance8 Ohm
Watt AES/peak900W / 3600W
Dimensions (H x W x D)912 x 410 x 500mm
35.91 x 16.14 x 19.69 inches
Weight35kg / 77lbs
FinishHighly resistant polyurea coating

CabinetHigh grade birch plywood

(1) Peak level measured at 1m half space compression limit of 3dB using multi-tone

GLL file
C15LS Preliminary

Gll • 600 Ko • 13/06/2023

Technical sheet

PDF • 677 Ko • 31/05/2023

Output Chart

PDF • 635 Ko • 20/03/2023

SCiO Presets

Zip • 716 Ko • 31/05/2023

Armonia Presets

Spk3 • 2.7 Ko • 13/07/2023

TTC – Tetracoil voice coil

AUDIOFOCUS has employed Tetracoil Double Voice Coil (TTC) technology  in both the C6 and C15LSa to achieve Carys’ high output and low distortion.

TTC is based on an innovative magnetic structure where two different inside-outside voice coils are wound on the same former and suspended evenly in the two magnetic gaps.

Key benefits of TTC include:

  • Higher acoustic output compared with traditional voice-coil drivers.
  • Excellent thermal dissipation and reduction of thermal distortion, resulting in 50% more output at high power.
  • Ideal motor symmetry over large displacement, providing flat inductance and minimal even-order distortion.
  • Reduced intrinsic distortions and DC component offsets for extreme linear excursion with maximum low frequency SPL.