C12S Subwoofer

Specifications

• Power handling, IEC268: 450 W
• Power handling, peak: 1500 W
• Sensitivity, 2.83 V/1 m: 95 dB
• Maximum SPL, long term: 120 dB
• Maximum SPL, peak: 126 dB
• Freq. response, +/- 3 dB: 45-600 Hz
• Nominal impedance: 8 ohms
• Recommended amplifier: 300-600 W into 8 ohms
• Input connectors: Screw terminals for maximum 2 mm2 cable
• Finish: Painted plywood
• Weight: 22.25 kg (49.05 lb)
• Measurements: 649 x 445 x 220 mm (25.55 x 17.58 x 8.66 in)
• Colour: Matt Black RAL 9005 – Matt White RAL 9010

Product Usage Instructions

Installation

Connecting the Speaker Cable: Connect the
speaker cable to the terminal in the left bottom side on the rear
of the cabinet. 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.

Amplifier Note: Ensure polarity is not reversed
to maintain proper sound phase.

Positioning the Cabinet: Mount the C12S on the
wall with the woofers facing inwards or have it standing with the
woofers facing down towards the floor.

Cables

Speaker Cable Guidelines: Use cables with low
capacitance, low inductance, and low impedance for optimal sound
quality and amplifier reliability. Avoid using thin speaker cables.
Refer to the provided table for guidance on cable thickness
relative to length.

Speaker Presets

Blaze Audio Speaker Presets: Recommended
loudspeaker presets are available at blaze-audio.com/support for
use with Blaze Audio’s PowerZoneTM Connect DSP-enabled amplifier
series.

FAQ

Warranty

Where can I find warranty information?
For warranty information, please refer to your local Blaze Audio
distributor or dealer, or contact Blaze Audio directly.

Service

How can I obtain spare parts for my Blaze Audio
speakers?
Spare parts are available through your local Blaze Audio
distributor or dealer. Contact Blaze Audio directly if you are
unable to source spare parts locally.

C12S Subwoofer Installation Manual

Table of contents

Introduction

3

Installation

4

Cables

6

Specifications

7

Introduction
C12S is a shallow subwoofer with solid output. It is designed for applications where strong output is needed in a discreet form factor. Designed for medium SPL applications, the plywood 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: One subwoofer Wall bracket Safety letter

Installation
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.
Amplifier
Note: when connecting, polarity shall NOT be reversed, as the reflected sound from the wall will be in phase with the top-boxes.

Positioning the cabinet.
C12S is designed to be mounted on the wall with the woofers facing inwards. It is also possible to have it standing with the woofers facing down towards the floor.
For installation on wall:

1 Mount the included wall bracket to the wall with 5 mm screws.

2 After the speaker cables are mounted to the terminals, hang the C12S in the bracket.

Speaker presets. Recommended loudspeaker presets are available at blaze- audio.com/support and are designed for use with Blaze Audio’s PowerZoneTM Connect DSP-enabled amplifier series.
Recommended amplifier. The C12S Subwoofer has a high minimum impedance, making them an easy load for amplifiers. We recommend using Blaze Audio’s PowerZoneTM Connect DSP-enabled amplifiers with power ratings that exceed the subwoofers’ power handling capacity (see specifications). As with all loudspeaker systems, power handling depends on the quality and size of the amplifier. If the amplifier is overdriven and runs into clipping, the drivers can be damaged, even if the amplifier’s output is lower than the speaker’s power handling capacity. When selecting an amplifier, keep in mind that a higher power amplifier operating without distortion will typically sound better and cause less damage to the loudspeaker than a lower power amplifier that is constantly clipping.

Cables

Speaker cables present the amplifier with different loads. Cables with high capacitance, high inductance and high impedance have a strong negative influence on sound quality as well as amplifier reliability. In order to get the most out of the speaker system, avoid using thin speaker cables.
As a rule of thumb, 2 mm2 (14 AWG) cable can be used for lengths up to 20 meters. 4 mm2 (11 AWG) cable should be used for lengths over 20 meters. For lengths over 50 meters, most amplifiers will become unstable and sound quality is reduced significantly.
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 20 m / 65 ft. 30 m / 100 ft. 60 m /200 ft.

4 10 m /32 ft. 15 m /50 ft. 30 m /100 ft.

2 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.

Specifications

220 mm 28,5 mm

445 mm

649 mm

28,5 mm

C12S
Power handling, IEC268: Power handling, peak: Sensitivity, 2,83 V/1 m: Maximum SPL, long term: Maximum SPL, peak: Freq. response, +/- 3 dB: Nominal impedance: Recommended amplifier: Input connectors: Finish: Weight: Measurements:
Colour:

450 W 1500 W 95 dB 120 dB
126 dB 45-600 Hz 8 300-600 W into 8
Screw terminals for maximum 2 mm2 cable
Painted plywood 22,25 kg (49.05 lb) 649 x 445 x 220 mm (25.55 x 17.58 x 8.66 in) Matt Black RAL 9005 – Matt White RAL 9010

Contents of the manual are subject to change without notice. Blaze Audio does not accept any liability for loss or damage caused or alleged to be caused directly or indirectly by these instructions.

Blaze Audio HQ, Pascal A/S, Ellekaer 6, DK-2730 Herlev, Denmark. hello@blaze- audio.com
Blaze Audio Americas, Pascal Inc., 888-500-0109, help@blaze-audio.com

Rev A 30/05/2024

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