Combined LF / Sub + amplifier solution for Carys column systems

TransducersLF : 1 x 15″
SPL peak / 1m (measured)137dB (preliminary)
Weight35kg / 77lbs
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Carys C15LSa is a combined LF / Sub extension for the Carys C6 column loudspeaker. The self-powered C15LSa can provide amplification to a partner C6 column, creating an elegant 2 box, full range PA system. A locking mechanism ensures stability and super-fast, plug ‘n play setup.

A leading edge 15” neodymium LF transducer with Tetracoil technology allows C15LSa 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 is equipped with an AUDIOFOCUS A4M SCiO Class-D amplifier module with comprehensive integrated DSP. The amplifier can be remotely monitored and controlled via a browser-based WebUI.

Carys C15LSa 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 + amplifier solution for Carys column systems
Transducers LF: 1 x 15”
Frequency range (-6dB)40Hz – 90Hz
SPL Peak (1)137 dB (preliminary)
ProcessingDedicated AUDIOFOCUS SCiO cardio presets
RiggingLocking mechanism for a Carys C6 Colum
Audio ConnectorsIN: 1×3-point XLR
LINK: 1×3-point XLR
1×4-point speakON output for Carys C6 connection
Network connectors1 x etherCON for control
Power ConnectorsIN: 1×3-point powerCON TRUE1TOP
LINK: 1×3-point powerCON TRUE1TOP
Nominal Impedance8 Ohm
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

Quick Start guide
SCiO Web Connection

PDF • 250 Ko • 13/06/2023

Technical sheet

PDF • 1.22 Mo • 05/09/2022

User Manual

PDF • 6.50 Mo • 10/07/2023

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.


Connect & Control your amplifiers

AUDIOFOCUS SCiO amplifiers can be securely monitored and controlled anytime, anywhere over the network.

Our intuitive Web UI network manager is web-based, eliminating the need for software downloads, and allows multiple amplifiers to be managed from your preferred device.

The network manager offers the comprehensive processing options you would expect from a high-end system controller.
For more detailed information please visit the AUDIOFOCUS SCiO page.


Note – this Quick Start Guide is for use with products manufactured from July 2022