Ci series
Installation Manual
C12S
Subwoofer
C12S BLK/C12S WHT
The C12S is a shallow subwoofer designed for applications requiring strong output in a discreet
form factor. Designed for medium SPL applications, the MDF cabinet features an advanced 12”
woofer with a very efficient motor design and a carbon fibre reinforced cone. The 75 mm voice coil
employs a high strength fibreglass former with windings both on the outer and inner surface of the
coil. The result is a balanced voice coil with uniform drive and very low distortion.
Cooling channels in the chassis ensure low power compression and excellent dynamics. The
cabinet can hang on the wall or stand on the floor, with the subwoofer being protected from
the surroundings. Cables are connected to the screw terminal allowing for up to 4 sq. mm cable
thickness which can be recessed from the loudspeakers backside into the front of the cabinet.
C12S is available in black and white and is a powerful yet discreet subwoofer for commercial
installation, and can be used together with the Ci and CBL loudspeaker series by Blaze Audio.
Included in the box:
Subwoofer
Wall bracket
Safety letter
Introduction
Installation
Ensure the amplier is powered off before mounting the subwoofer, and make sure the workspace is
secure while working.
Connecting the speaker cable.
Connect the speaker cable to the terminal in the left bottom side on the rear of the cabient.
Connect red + from the amplifier output to the red terminal on the subwoofer and black - from the
amplifier output to the black input terminal on the C12S.
Note: when connecting, polarity shall NOT be reversed, as the reected sound from the wall will be in
phase with the top-boxes.
Amplifier
Positioning the cabinet.
The C12S is designed to be mounted on the wall with the woofers facing inward and the
bottom of the loudspeaker no more than 15 cm above the floor. Alternatively, it can be
positioned standing with the woofers facing downward. Be sure to install the C12S in a
location that is inaccessible to small children.
For installation on wall:
Speaker presets.
Recommended loudspeaker presets are available at blaze-audio.com/support and are designed for use
with Blaze Audio’s PowerZone™ Connect DSP-enabled amplier series.
Recommended amplier.
The C12S Subwoofer has a high minimum impedance, making them an easy load for ampliers. We
recommend using Blaze Audio’s PowerZone™ Connect DSP-enabled ampliers with power ratings that
exceed the subwoofers’ power handling capacity (see specications). As with all loudspeaker systems,
power handling depends on the quality and size of the amplier. If the amplier is overdriven and runs
into clipping, the drivers can be damaged, even if the amplier’s output is lower than the speaker’s
power handling capacity. When selecting an amplier, keep in mind that a higher power amplier
operating without distortion will typically sound better and cause less damage to the loudspeaker than a
lower power amplier that is constantly clipping.
1
2
Mount the included wall bracket
to the wall using 5 mm screws. It
is strongly recommended to use
the appropriate wall anchors for
the specic wall type.
After the speaker
cables are mounted
to the terminals,
hang the C12S in
the bracket.
Cables
Speaker cables present the amplier with different loads. Cables with high capacitance, high inductance
and high impedance have a strong negative inuence on sound quality as well as amplier reliability. In
order to get the most out of the speaker system, avoid using thin speaker cables.
As a rule of thumb, 2 mm
2
(14 AWG) cable can be used for lengths up to 20 meters. 4 mm
2
(11 AWG)
cable should be used for lengths over 20 meters. For lengths over 50 meters, most ampliers will
become unstable and sound quality is reduced signicantly.
To minimize power loss and response variations, please refer to the following table for guidance,
showing the maximum recommended cable length relative to impedance and cable thickness:
Cable size/load
2 sq mm.
2,5 sq mm.
4 sq mm.
8 Ω
20 m / 65 ft.
30 m / 100 ft.
60 m /200 ft.
4 Ω
10 m /32 ft.
15 m /50 ft.
30 m /100 ft.
2 Ω
5 m / 16 ft.
7,5 m / 25ft.
15 m / 50 ft.
Warranty.
For warranty information, please refer to your local Blaze Audio distributor or dealer, or contact us
directly.
Service .
Spare parts for your Blaze Audio speakers are available through your local Blaze Audio distributor or
dealer. Please contact us directly, in case you are not able to source spare parts locally.
©2025 Sonance. All rights reserved. Sonance is a registered trademarks of Dana Innovations.
Due to continuous product improvement, all features and specifications are subject to change without notice.
For the latest Sonance product specification information visit our website at www.sonance.com.
SONANCE • 991 Calle Amanecer • San Clemente, CA 92673 USA • Phone: (949) 492-7777 • Technical Support: (949) 492-7777 • www.sonance.com • 07.01.25
Rev H 23/06/2025
Specications
445 mm220 mm
28,5 mm
28,5 mm
649 mm
Sensitivity SPL / 1W @ 1m: 95 dB
Maximum SPL, Long Term: 120 dB
Maximum SPL, Peak: 126 dB
Frequency response: 45-600 Hz
Nominal impedance: 8 Ω
Ingress Protection: Indoor use only
Recommended amplifier: 300-600 W into 8 Ω
Measurements with wall mount: 649 x 445 x 220 mm
(25.55 x 17.58 x 8.66 in)
Weight: 23 kg (50.71 lb)
Colour: Matt White (RAL9016)
Matt Black (RAL790-5)
