Cicada Audio CMB8.S4 8″ Pro Sound Midrange Speaker (Single)
Cicada Audio CMB8.S4 8″ Pro Sound Midrange Speaker (Single)
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Cicada Audio CMB8.S4 8" Pro Mid-Bass Driver
The Cicada Audio CMB8.S4 is an 8" pro mid-bass driver for Harley-Davidson and custom motorcycle audio builds, rated at 500 watts RMS / 1000 watts max with 87.2dB sensitivity. A 2.5" six-layer 4Ω voice coil and Y30 ferrite motor sit in a heavy-duty die-cast aluminum basket with a 7.38" mounting diameter.
Pro 8" Mid-Bass Output for Harley Audio
Sold as a single 4Ω driver covering 35Hz–3kHz, so order two for a pair. Mounting depth is 3.9" (99.5mm), so verify the space in your speaker location before ordering.
- 500 watts RMS / 1000 watts max
- 87.2dB sensitivity, 35Hz–3kHz
- 4Ω, sold as a single driver
Key Product Details
| Product | Cicada Audio CMB8.S4 8" Pro Mid-Bass Driver |
| Impedance | 4Ω |
| Speaker Type | Pro mid-bass driver, 8" |
| Power Handling | 500 watts RMS / 1000 watts max |
| Sold As | Single (one driver) |
| Warranty | 2 years |
Always verify impedance, speaker location, mounting depth, amplifier power, wiring, crossover setup, and final fitment before ordering for your Harley-Davidson audio build.
Built for Amplified Custom Motorcycle Audio
The CMB8.S4 is a mid-bass driver for riders building a custom system around real amplifier power. It is not a full-range coaxial, so plan the high-frequency drivers, crossover points and amplifier channels around it.
It uses a 2.5" six-layer 4Ω voice coil with a Black Coat finish, with a vented voice coil gap and heat sink design for heat dissipation.
- 2.5-inch six-layer Black Coat voice coil.
- Vented voice coil gap and voice coil heat sink design.
- Y30 ferrite motor.
- Heavy-duty die-cast aluminum basket.
Specifications
| Speaker Size | 8" mid-bass |
| Impedance | 4Ω |
| Power Handling | 500 watts RMS / 1000 watts max |
| Frequency Response | 35Hz–3kHz +/-5dB |
| Sensitivity | 87.2dB, 1W / 1M |
| Voice Coil | 2.5", 6-layer, Black Coat |
| Magnet | Y30 ferrite |
| Basket | Heavy-duty die-cast aluminum |
| Mounting Depth | 3.9" / 99.5mm |
| Mounting Diameter | 7.38" / 187.5mm |
Fitment and System Planning
Confirm speaker depth, mounting diameter, clearance, wiring path, impedance and amplifier compatibility before installation.
If you are unsure, confirm your year, model and layout with Garage Bagger Stereo before ordering the CMB8.S4.
What to Pair With the CMB8.S4
These parts help you power, wire and tune the speakers correctly.
Cicada Motorcycle Amplifiers
Power the speakers with an amplifier built for Harley-Davidson audio.
Motorcycle DSP
Tune the system with a digital sound processor built for Harley-Davidson audio.
Speaker Installation Parts
Adapters, rings, grilles and mounting parts for speaker installs.
Cicada Audio
Browse Cicada speakers, amplifiers and DSP for Harley-Davidson audio builds.
Related Cicada & Motorcycle Audio Paths
Build the system around the correct speaker, amplifier, DSP, wiring, and installation parts. These related collections help match the CMB8.S4 with the right Harley audio upgrade path.
Best Use for the CMB8.S4
Choose it for a custom build that needs a mid-bass driver with real power handling behind it.
Amplified System Recommended
These speakers are intended for serious motorcycle audio systems. For best results, match the CMB8.S4 with proper amplifier power, correct impedance selection, clean wiring, and a real tuning plan.
Cicada CMB8.S4 FAQ
How much power can the CMB8.S4 handle?
Its power handling is listed as 500 watts RMS / 1000 watts max, and it is intended for amplified systems.
What mounting size does the CMB8.S4 need?
It has a mounting depth of 3.9" (99.5mm) and a mounting diameter of 7.38" (187.5mm). Verify the available depth and cutout in your speaker location before ordering.
Is the CMB8.S4 sold as a pair?
It is sold as a single driver. Order two for a pair.
Is the CMB8.S4 a full-range speaker?
No. It is a mid-bass driver. Plan separate high-frequency drivers and a crossover or DSP strategy for the rest of the system.
What warranty does the CMB8.S4 carry?
Cicada Audio products carry a two-year warranty.
What else do I need to run the CMB8.S4?
Plan for an amplifier that matches the speaker impedance and power handling, OFC speaker wire, clean signal input, and a tuning plan such as a DSP. Garage Bagger Stereo can help you match the parts to your bike.
Does Garage Bagger Stereo install the CMB8.S4?
Garage Bagger Stereo offers motorcycle audio installation at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131 to check scheduling.
Need Help Choosing?
Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order.