Cicada Audio CHX8.4 — 8.0" Pro Coaxial Horn Motorcycle Speakers (4Ω, Carbon Matrix Composite)
Cicada Audio CHX8.4 — 8.0" Pro Coaxial Horn Speakers for Extreme Harley-Davidson Motorcycle Audio Builds (4Ω, Carbon Matrix Composite)
If you want brutally loud output, thunderous midbass and crystal-clear vocals from a motorcycle speaker — 8-inch horn-loaded coaxials are as serious as it gets.
The Cicada Audio CHX8.4 is an extreme-performance 8-inch Pro Coaxial Horn driver engineered for riders who want maximum volume, projection and authority from their Harley-Davidson touring audio system. Featuring a Carbon Matrix Composite™ cone, oversized 2.5-inch mid-bass voice coil, 1.75-inch horn tweeter and a powerful N35SH neodymium motor, the CHX8.4 delivers enormous midbass punch and razor-sharp clarity at any speed.
Designed for custom 8-inch lower-fairing pods, 8-inch saddlebag lids and extreme bagger audio builds, it handles huge amplifier power and shrugs off heat, vibration and harsh riding conditions.
Key Features
- Massive 8-inch driver: More cone area for deeper midbass, higher output and bigger stage presence.
- 1.75" horn-loaded tweeter: Exceptional projection and clarity through wind and exhaust noise.
- Carbon Matrix Composite™ cone: Lightweight, rigid and weather-resistant for tight, accurate midbass.
- Oversized 2.5" voice coil: Handles enormous RMS power while maintaining low distortion.
- Neodymium N35SH motor: High-efficiency magnet delivers strong control and cooling.
- External 12 dB crossover: Includes -3 / -6 dB tweeter attenuation for tuning.
- 4Ω impedance: Works seamlessly with high-power motorcycle amplifiers.
- Built for abuse: Designed to withstand heat, vibration and outdoor use.
Specifications
| Cicada Audio CHX8.4 – Technical Specifications | |
|---|---|
| GENERAL | |
| Speaker Size | 8.0" Pro Coaxial Horn |
| Impedance | 4 Ω |
| Design | Horn-loaded coaxial with Carbon Matrix Composite™ cone |
| Power Handling | 400W RMS / 800W MAX |
| AUDIO PERFORMANCE | |
| Sensitivity | 92 dB (1W / 1M) |
| Frequency Response | 46 Hz – 20 kHz (±3 dB) |
| COMPONENTS | |
| Cone Material | Carbon Matrix Composite™ |
| Tweeter | 1.75" aluminium-dome horn tweeter |
| Mid-Bass Voice Coil | 2.5" (64 mm) Black Coat™ OFC copper |
| Tweeter Voice Coil | 1.75" OFC copper (repairable CHT175) |
| Crossover | External 12 dB, vented, encased crossover |
| Tweeter Attenuation | -3 / -6 dB heat-sink resistor pack |
| Magnet | N35SH Neodymium |
| Basket | Die-cast aluminium with Vortex Flow Venting™ |
| PHYSICAL | |
| Mounting Depth | 3.3" (84 mm) |
| Cut-Out Diameter | 7.2" (182 mm) |
| Grilles | Not included |
| WARRANTY | |
| Coverage | 2 years |
| ⚠️ IMPORTANT – Crossover & Setup Requirements (Read Before Installation) | |
|---|---|
|
All horn speakers have mechanical limits. Regardless of power ratings or advertised “MAX” figures, a speaker can only move so far before mechanical failure occurs. Most horn speaker failures are NOT burned voice coils. In real-world motorcycle installs, damage is typically caused by over-excursion — the speaker moving too far because it is crossed over too low. This leads to tinsel leads tearing away from the voice coil or spider. Once this happens, the speaker is permanently damaged. |
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Required High-Pass Crossover Settings
Lower crossover points WILL cause distortion and speaker damage. |
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Saddlebag & Pod Installations – Critical Note
When using 6×9 or 8-inch Pro Mid-Bass / Horn drivers inside saddlebags, internal air volume is limited. Cicada Audio strongly recommends the following DSP settings:
Never run these speakers full-range. |
|
Amplifier & Wiring Setup Notes
Always high-pass coaxial horn drivers. |
Why It Works So Well on Motorcycles
- Extreme output: Built for riders who want the loudest possible system.
- Huge midbass punch: 8-inch cone moves serious air for a deep, full sound.
- Superior clarity at any speed: Horn tweeter cuts through wind and exhaust noise with ease.
- Made for high-power amplifiers: Handles aggressive RMS loads without stress.
- Built for real-world riding: Heat, vibration and weather are no problem.
Fitment
Fits Harley-Davidson Touring models using 8-inch pods or saddlebag lid conversions.
- Lower Fairing 8" Pods
- 8-inch Saddlebag Lids
- Custom Inner Fairings
- Road Glide & Street Glide custom 8" locations
Recommended System Matching
- Best with high-output amplifiers (FLX1400.4, FLX1400.4P, FLX2000.4).
- Perfect for extreme-output or SPL touring audio builds.
- DSP recommended for proper crossover control and staging.
- Pairs perfectly with 6x9” or CHX65 rear horn speakers.
Building an extreme-output Harley audio system?
Motorcycle Audio Australia can help match the CHX8.4 to the ideal amplifier, DSP and pods for your build.
Shipping
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Return policy
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer’s responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We’ll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you’re unsure about compatibility, reach out before ordering—we’re happy to help.