Cicada Audio RR3WG-8F 8-inch Flat Acoustic Waveguide

The 8-inch flat waveguide for RR2TM & RR3TM motors — maximum throw, biggest horn mouth in the flat series, for Tour-Pak, fairing, and custom enclosure builds

The Cicada Audio RR3WG-8F is an 8-inch flat acoustic waveguide for Cicada Audio's RR2TM and RR3TM compression driver motors. Sold as a pair, it provides the largest horn mouth in the flat waveguide series — producing greater acoustic loading, higher efficiency, and more forward throw than any of the 6×9" formats. For riders building big front stages, Tour-Pak installs, fairing pods, or custom enclosures where the 6×9" footprint is a constraint rather than a requirement, the RR3WG-8F is the step up.

The 8-inch format addresses a different set of install positions than the 6×9" waveguide series. Where the RR3WG-69F, RR3WG-69A, and RR3WG-69S are built around the standard saddlebag lid cutout, the RR3WG-8F opens up Tour-Pak positions, large fairing pods, and enclosures where you're not constrained to a 6×9" opening. The larger mouth delivers more horn efficiency and more long-range throw from the same motor — the right choice when your install allows it.

Who This Is For

Riders building a high-output horn system in a Tour-Pak, custom fairing pod, or bespoke enclosure where an 8-inch cutout is achievable and maximum projection is the goal. The RR3WG-8F pairs with both the RR2TM and RR3TM — use the RR2TM if you want a capable, cost-effective system; use the RR3TM for maximum output and the 110dB sensitivity advantage at full-range highway speed. If your install is a standard saddlebag lid, the 6×9" series is the correct fit — start with the RR3WG-69F for full-depth flat positions.

What This Is Best For

• Maximum throw and forward projection in the series — Horn mouth area directly determines acoustic coupling efficiency and the distance at which the system remains audible. An 8-inch mouth is substantially larger than any 6×9" footprint — the coupling efficiency increase translates into greater forward throw at equivalent power. On the road: at sustained highway speeds where wind noise is loudest and the distance from the speaker to the helmet is greatest, the RR3WG-8F projects further and cleaner than a 6×9" waveguide running the same motor.
• Higher acoustic efficiency from the same motor — Larger mouth area means the horn loads the air more efficiently. The acoustic impedance transformation from motor exit to radiating face is greater, which extracts more acoustic output per watt from the compression driver. On the road: the amplifier can run at a lower output level for equivalent perceived loudness — useful in systems where thermal management or dynamic headroom is a priority.
• Tour-Pak and custom enclosure fitment — The 8-inch format opens up mounting positions that the 6×9" series can't reach — Tour-Pak lid positions, custom fairing pods, bespoke enclosure builds, and larger-format aftermarket lid kits. For serious custom builds where the enclosure dimensions aren't dictated by a stock lid cutout, the RR3WG-8F provides the most capable flat waveguide option in the range. On the road: a Tour-Pak install running RR3WG-8F waveguides with RR3TM motors produces a rear-stage horn system that projects forward past the rider rather than dispersing sideways off the bike.
• Broad horizontal dispersion, controlled vertical output — The flat 8-inch face produces a wide horizontal spread — covering rider and passenger across a broad listening arc — while the horn geometry maintains enough vertical pattern control to keep energy focused at the seat rather than projecting into the air. On the road: consistent coverage from both Tour-Pak positions simultaneously produces a wide, stable soundstage rather than two point sources that each sound louder when you're directly on their axis.
• Precision-matched throat geometry for RR2TM & RR3TM — Throat dimensions are engineered to the exit diameter of both the ferrite RR2TM and neodymium RR3TM motors, ensuring correct acoustic loading for both. Correct loading maximises sensitivity, extends usable frequency range, and keeps response smooth across the operating band. On the road: run the RR2TM now and upgrade to the RR3TM later — the waveguide loads correctly with both motors, no crossover or EQ changes required.
• Low-distortion acoustic path — The smooth internal flare geometry and precision wave-shaping minimise internal reflections and turbulence that would otherwise produce colouration at high output levels. A well-designed 8-inch horn maintains clean acoustic behaviour at the extreme volume levels that a high-sensitivity compression motor can generate. On the road: pushed hard at highway speeds, the output stays clean and controlled rather than developing the hardness or harshness that poorly-designed large horns exhibit at maximum output.
• All-weather composite construction — Built from UV-stable, moisture-resistant composite materials formulated for powersports environments. Tour-Pak positions and fairing pods see the same sun, rain, and temperature cycling that saddlebag lids do — the RR3WG-8F is built to last in all of them. On the road: no warping in Australian summer heat, no cracking in winter, no rattles from road vibration — acoustically and dimensionally consistent over the life of the install.
• Nanofram™ compatible — Accepts Cicada Audio's Nanofram™ horn cover for additional weather protection in high-exposure installs. On the road: for marine, open-cab UTV, or exposed custom pod positions — add Nanofram™ for a physical seal at the horn mouth without meaningful acoustic penalty.

The Bottom Line

The RR3WG-8F is the highest-output flat waveguide in the Cicada range — the 8-inch mouth produces more acoustic coupling efficiency, more forward throw, and a wider dispersion pattern than any 6×9" format from the same motor. For riders building in Tour-Pak, fairing pod, or custom enclosure positions where maximum projection is the objective, this is the waveguide to run. Pair it with the RR3TM for a 110dB horn system, or the RR2TM for a capable, cost-effective alternative. Available at MAA as Australia's authorised Cicada Audio dealer.

Fitment

The RR3WG-8F operates on the same horn-loading principle as the rest of the Cicada waveguide range — converting the narrow, high-pressure exit of a compression driver into a broad, controlled, high-efficiency radiated signal. The key difference from the 6×9" series is mouth area: the 8-inch format provides substantially more radiating surface, which improves the acoustic impedance transformation from motor exit to radiated field. More efficient impedance transformation means more SPL per watt and greater long-range projection from the same motor.

On the road: the RR3WG-8F makes the most of both the RR2TM and RR3TM's output — more of the motor's acoustic energy is projected forward as usable sound rather than lost to reflections or poor coupling at the horn exit.

8-inch Horn Mouth — Why Size Matters

Horn efficiency increases as mouth area increases, up to the point where the mouth circumference equals one wavelength at the lowest operating frequency. For a tweeter motor crossing over at 3kHz, this means the horn is well within its efficient operating regime across the full 8-inch face — all of that mouth area is doing productive acoustic work. The larger face also increases the directional control factor: a bigger mouth can project a tighter beam at a given frequency, which at 8 inches across means strong forward projection while still maintaining wide horizontal spread across the listening arc.

On the road: more mouth area at the same motor output level produces higher measured SPL at distance — the sound travels further before dropping below the ambient wind and road noise floor, which is exactly the challenge on a touring bike at highway speed.

Smooth Internal Flare Geometry

The internal acoustic path follows a smooth, optimised flare from the throat to the mouth. Smooth flare contours reduce internal reflections and acoustic turbulence that would otherwise generate colouration and distortion — particularly at high output levels where the pressure differential across the horn is greatest. The wave-shaping geometry ensures consistent pressure distribution across the full 8-inch mouth face, which keeps the dispersion pattern even and avoids the hot-spots or nulls that poorly-designed large horns can develop.

On the road: at sustained high volume levels — where the RR3TM's 300W RMS power handling can deliver genuinely extreme SPL — the RR3WG-8F maintains clean, low-distortion output rather than hardening as the acoustic path becomes non-linear.

Throat Geometry & Motor Compatibility

The throat is precision-matched to the exit diameter of both the RR2TM (2-inch ferrite) and RR3TM (3-inch neodymium) compression motors. Throat-to-flare geometry determines acoustic loading — the relationship between motor exit pressure and horn flare rate controls sensitivity, power handling, and frequency extension. The RR3WG-8F's geometry is calculated to load both motors within their optimal operating range, maximising output and maintaining smooth response regardless of which motor is installed.

On the road: upgrade from RR2TM to RR3TM without replacing the waveguides — the acoustic loading is correct for both, and the performance difference between motors is immediately audible without needing to re-tune the system.

Horizontal vs. Vertical Dispersion

The flat 8-inch face produces a wide horizontal dispersion pattern — ensuring even coverage across both rider and passenger across a broad seating arc — while the horn geometry maintains controlled vertical output to avoid wasting energy above and below the listening zone. On a motorcycle in open air, this directional control is the difference between a system that sounds loud and a system that sounds present and clear at the seat. The RR3WG-8F's dispersion characteristics are optimised for the touring motorcycle geometry: broad enough laterally to cover two riders, controlled enough vertically to keep energy aimed at head height.

On the road: both helmets receive consistent, even high-frequency coverage at highway speed — no hot-spot if you're directly in front of one waveguide, no drop-off if you're offset from the centreline.

All-Weather Composite Construction

Moulded from UV-stable, moisture-resistant composite materials formulated specifically for powersports durability. Tour-Pak and fairing pod positions see the full range of outdoor environmental exposure — rain, direct solar radiation, engine heat, and road vibration continuously. The composite formulation maintains dimensional stability through temperature cycles, resisting the warping and cracking that affects standard plastics in these conditions. Dimensional accuracy is essential for horn performance: a waveguide that loses its shape loses its acoustic properties.

On the road: the waveguide that came out of the box performs identically after three years of Australian touring conditions — no shape change from heat, no surface degradation from UV, no rattles from vibration fatigue.

Nanofram™ Compatibility

Fully compatible with Cicada Audio's Nanofram™ horn cover system. Nanofram™ provides a physical barrier against direct water ingress at the horn mouth while maintaining minimal acoustic impact on the radiated output. For Tour-Pak and fairing pod positions that see regular rain, or for marine and UTV applications, Nanofram™ provides the additional weather protection layer beyond what the composite housing alone provides.

On the road: add Nanofram™ for maximum weather protection in high-exposure installs; the acoustic difference is minimal in the motor's operating frequency range above 3kHz, and the physical protection is real.

Technical Specifications