BLAZE C8S Subwoofer
“
Specifications:
- Model: C8S BLK/C8S WHT
- Series: Ci series
Product Information:
The C8S Subwoofer is a high-quality bass module designed to
enhance your audio experience. It comes with a wall bracket,
mounting template, and safety letter for easy installation and
setup.
Installation:
Connecting the Subwoofer:
There are three methods for connecting the subwoofer to the
input terminals depending on your setup:
Option 1: Stereo Mode 8 ohm
- Connect the amplifier outputs to the red terminals on the
subwoofer. - Connect the negative terminals from each amplifier output to
the black input terminals on the C8S. - Connect the subwoofer output terminals to the corresponding
inputs on your left and right speakers.
Option 2: Dual Mono Sum 4 ohm
- Connect the amplifier outputs to the red terminals on the
subwoofer. - Establish a parallel connection between the L and R inputs on
the subwoofer.
Option 3: Dual Mono Sum 16 ohm
- Connect the positive terminals to the L red terminal, and the
negative terminals to the R black terminal.
Frequently Asked Questions (FAQ):
Q: Can I use the C8S Subwoofer without a PowerZoneTM Connect
amplifier?
A: Yes, you can use Option 1 for connecting the subwoofer
without a PowerZoneTM Connect amplifier.
Q: Is it necessary to follow the polarity when connecting the
subwoofer?
A: Yes, it is crucial not to reverse polarity when connecting
the subwoofer to ensure proper sound phase alignment.
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C8S Subwoofer Installation Manual
C8S BLK/C8S WHT
Ci series
Table of contents
Introduction
3
Installation
4
Cables
9
Specifications
10
Introduction
C8S is a compact and shallow on-wall subwoofer. The subwoofers face the wall and the sound is reflected out to the surroundings, allowing the subwoofer to blend discretely into any modern environment and offering full protection of the drivers. The C8S features a powerful 8″ subwoofer with dual voice coil and a passive radiator to extend the sub bass performance to below 34 Hz. The built-in crossover with heavy duty terminals allows the cables for the top-boxes to be connected directly from the C8S. The subwoofer features an integrated mounting system with removable feet. It can be wall-mounted with the drivers facing inward, or, by removing the feet, positioned on its front with the drivers facing upward–ideal for placement under sofa or other furniture. Measuring only 16 cm deep or 19 cm with wall mount, the C8S offers very loud output for its size with real sub bass extension. C8S is available in black and white and is designed to be used together with the Ci loudspeaker series by Blaze Audio.
Included in the box: Subwoofer Wall bracket Mounting template Safety letter
Installation
There are three distinct methods for connecting the subwoofer to the input terminals. We recommend utilizing our PowerZoneTM Connect amplifier series, which is designed to seamlessly integrate with our downloadable speaker presets accessible at blaze-audio.com. Option 1: If you’re NOT using a PowerZoneTM Connect amplifier, consider using option 1. Options 2 or 3: If your loudspeakers and C8S bass module are linked to our PowerZoneTM Connect amplifier, options 2 or 3 can be effectively utilized.
Connecting the speaker cable. There are two sets of speaker terminals. The left terminal is for left and right input from the amplifier, while the right terminal serves as outputs for top-boxes.
L
R +-
Input
L
R +-
Output
Option 1: Stereo Mode 8 ohm
1. Connect the positive (+) terminals from each amplifier output to the red terminals on the subwoofer, and connect the negative (-) terminals from each amplifier output to the black input terminals on the C8S.
Left speaker
Right speaker
+
–
+
–
L
R +-
Input
C8S Subwoofer
L
R +-
Output
2. Connect L red (+) from the subwoofer output terminal to the red (+) input on your left speaker, and L black (-) from the subwoofer output terminal to the black (-) terminal on your left speaker. Likewise, connect R red (+) on the subwoofer output terminal to the red (+) input on your right speaker, and R black (-) from the subwoofer output terminal to the black (-) terminal on your right speaker.
Note: When connecting, polarity shall NOT be reversed, as the reflected sound from the wall will be in phase with the top-boxes.
Option 2: Dual Mono Sum 4 ohm:
This configuration is ideal for use with our PowerZoneTM Connect amplifier series. The subwoofer’s dual voice coil bass unit allows for parallel connection of the inputs, requiring only a single cable run to the subwoofer. This low-impedance solution is particularly suitable when long cable runs are not needed.
Left speaker
Right speaker
+
–
+
–
L
R +-
Input
C8S Subwoofer
L
R +-
Output
1. Connect the positive (+) terminals from the amplifier output to the red terminals on the subwoofer, and connect the negative (-) terminals from the amplifier output to the black input terminals on the C8S.
2. Establish a parallel connection between the L and R inputs as illustrated in the diagram.
Note: The output on the PowerZoneTM Connect amplifier. shall be set to “Sum” of Left and Right in Output Routing
Option 3: Dual Mono Sum 16 ohm:
This configuration is ideal for use with our PowerZoneTM Connect amplifier series. The subwoofer’s dual voice coil allows for serial connection of the inputs, requiring only a single cable run to the subwoofer. This 16 ohm solution is advantageous when long cable runs are necessary.
Left speaker
Right speaker
+
–
+
–
L
R +-
Input
C8S Subwoofer
L
R +-
Output
1. Connect the positive (+) terminals to the L red terminal, and the negative (-) to the R black terminal.
2. Establish a serial connection between the L and R inputs as illustrated in the diagram
Note: The output on the PowerZoneTM Connect amplifier shall be set to 100 V using two (2) outputs as shown in amplifier manual.
Positioning the cabinet. C8S 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 Mark screw holes for wall bracket using the provided template.
Up
2 Mount the included wall bracket to the wall with the included screws.
3 After the speaker cables are mounted to the terminals, hang
the C8S 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 C8S 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
374 mm
190 mm
32 mm
530 mm
Sensitivity SPL / 1W @ 1m: Maximum SPL, Long Term: Maximum SPL, Peak: Frequency response: Nominal impedance: Ingress Protection: Recommended amplifier: Measurements with wall mount:
Weight: Colour:
32 mm
88 dB 108 dB 114 dB 30-240 Hz 8 Indoor use only 50-150 W into 8 530 x 374 x 190 mm (20.87 x 14.72 x 7.48 in) 10,7 kg (23.59 lb) Matt White (RAL9010) Matt Black (RAL9005)
Rev F 23/06/2025
©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
Documents / Resources
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SONANCE BLAZE C8S Subwoofer [pdf] Installation Guide C8S BLK, C8S WHT, BLAZE C8S Subwoofer, BLAZE C8S, BLAZE, C8S, Subwoofer |