Precision Power HD14.SBW – Powered Saddlebag Subwoofer Kit for 2014+ Harley-Davidson Touring
| Power | 300W RMS |
| Year Range | 2014-2023 |
Self-contained 300W powered saddlebag subwoofer for 2014+ Harley Touring — down-firing, no structural modification, HD14.SBV acoustic vent kit included.
The HD14.SBW is Precision Power's powered saddlebag subwoofer system for 2014+ Harley-Davidson® Touring stretched hard-shell saddlebags. A down-firing subwoofer driver, passive radiator, and 300W Class-D amplifier are housed in a rotomolded ABS enclosure sized for the OEM stretched bag — no cutting, no fibreglassing, no structural modification to the bag. A hydrophonic membrane port projects bass from the enclosure while blocking water and debris. Plug-n-play harness supports factory Boom!™ Box and aftermarket head units. HD14.SBV acoustic vent kit included. Available in clutch-side (HD14.SBWL) and brake-side (HD14.SBWR) variants. Sold individually — one saddlebag per order.
Most approaches to adding bass to a Harley Touring system involve a compromise — an underpowered unit that doesn't move enough air, or a fabrication project that leaves the saddlebag no longer usable as storage. The HD14.SBW does neither: a complete powered subwoofer in a single enclosure, designed to fit inside the factory stretched bag, drawing signal from the existing head unit through a harness that requires no rewiring. The included HD14.SBV acoustic vent kit improves bass efficiency by relieving trapped air pressure from the enclosure space inside the bag. Fit it, connect it, close the bag.
Who This Is For
Riders who want genuine low-frequency impact from a 2014+ Harley Touring system without modifying the saddlebag or adding a separate amplifier. The HD14.SBW supplements the front-stage speakers — it does not replace them. Use it alongside HD14.652 or HD14.654 fairing speakers where the low end needs reinforcement below 80 Hz. Contact Motorcycle Audio Australia to confirm fitment and discuss system integration before ordering.
What This Is Best For
- Self-contained powered bass — no external amplifier required: The 300W Class-D amplifier is built into the enclosure. The HD14.SBW needs a signal input and a power connection — no separate amplifier channel to provision, no remote turn-on wire to route through the fairing.
- No structural modification to the saddlebag: The enclosure is sized to fit inside the OEM 2014+ stretched hard-shell bag. Remove the standard bag liner, fit the HD14.SBW, reconnect the harness. The bag closes and functions as normal storage around the enclosure.
- Hydrophonic membrane port system: The membrane port allows bass pressure to project into the saddlebag space while blocking water and debris from entering the enclosure — the same membrane technology used in waterproof action sports earphones. It performs the acoustic function of a ported enclosure without a conventional open port that would admit water during rain or washdowns.
- Factory and aftermarket head unit compatible: The plug-n-play harness supports high-level (speaker-level) input from factory Boom!™ Box radios and low-level (RCA) input from aftermarket head units with pre-out outputs. No rewiring of the factory loom required.
Before You Order — Compatibility Notes
Sold individually — select the correct side: Each HD14.SBW covers a single saddlebag. For bass from both sides, order both the HD14.SBWL (clutch side, left) and HD14.SBWR (brake side, right). The two variants are not interchangeable — select the correct side before adding to cart.
Stretched hard-shell saddlebags only: The HD14.SBW is sized for 2014+ OEM stretched saddlebag internal dimensions (Harley-Davidson® Part No. 90201078DH). Standard non-stretched bags and aftermarket bags vary in internal volume — confirm clearance before ordering. Contact Motorcycle Audio Australia to confirm fitment with your specific setup.
HD14.SBV acoustic vent kit included: The HD14.SBV acoustic vent kit is included in the box. It improves bass efficiency by relieving trapped air pressure from the enclosure space inside the bag — fit it as part of the installation.
The Bottom Line
The HD14.SBW is the practical solution for adding bass to a 2014+ Harley Touring system — complete powered subwoofer in a single enclosure, no structural modification, and a plug-n-play harness that works with factory and aftermarket head units. The HD14.SBV acoustic vent kit is included. Select the correct side variant: HD14.SBWL for the clutch side, HD14.SBWR for the brake side. Order both for dual-bag installation.
What's Inside the HD14.SBW
The down-firing subwoofer driver with passive radiator is the core of the HD14.SBW's bass output. A passive radiator is a secondary cone with no motor — it moves in response to air pressure generated by the active driver, extending low-frequency output below what a sealed enclosure of the same volume can achieve. The down-firing orientation directs bass energy downward into the bag space rather than outward, making efficient use of the enclosed volume and the hydrophonic membrane port system. A neodymium magnet motor keeps the driver compact and efficient in an application where footprint inside the stretched bag is constrained. On the road: at highway speed with the rear stage running, the passive radiator extends low-end output into the range that front-stage speakers can't reach — the difference between music you can feel across the seat and music that sounds thin against wind noise.
The integrated 300W Class-D amplifier is built directly into the enclosure, providing the subwoofer with a dedicated power channel without requiring a separate amplifier. Class-D topology produces significantly less heat relative to the power delivered compared to Class-A/B designs — important in an enclosed saddlebag where ambient temperature can already be elevated on a long summer ride. Built-in protection circuitry manages thermal, short-circuit, and overload conditions automatically. On the road: on a long touring day with the subwoofer running continuously in a closed bag, the Class-D topology keeps internal temperature manageable — the protection circuit is there as a backstop, not a regular occurrence.
The rotomolded ABS enclosure is constructed using rotational moulding — a process that produces a seamless, uniform-wall shell without joints or seams that could split under sustained vibration or impact. Rotomolded ABS is specified in applications where enclosure integrity under mechanical stress is non-negotiable — the same construction method used in quality marine and off-road equipment. On the road: the enclosure takes the same vibration inputs as the saddlebag itself — road imperfections, highway resonance, the occasional hard stop. The seamless shell has no joints to crack under sustained mechanical load.
The hydrophonic membrane port replaces a conventional bass reflex port opening. It allows air movement — and with it, bass pressure — to transfer through the port while the membrane blocks liquid ingress. This maintains the acoustic function of a ported enclosure in a saddlebag environment where a conventional open port would admit water and debris during rain or washdowns. On the road: in a downpour or a pressurised washdown, the membrane port maintains its seal. Bass output is unchanged whether the bag exterior is dry or soaked.
The plug-n-play harness supports high-level (speaker-level) input from factory Boom!™ Box radios and low-level (RCA/line-level) input from aftermarket head units with pre-out outputs. Waterproof quick-disconnect plugs allow fast saddlebag removal without permanently disconnecting or cutting any wiring. On the road: removing the saddlebag for overnight storage or service is a single quick-disconnect — no soldered connections to cut, no connectors to damage from repeated removal.
Fitment
The HD14.SBW is designed for OEM 2014+ stretched hard-shell saddlebag internal dimensions (HD Part No. 90201078DH). Standard non-stretched bags and aftermarket bags are not compatible without confirming internal clearance.
| Model | Position | Years |
|---|---|---|
| Street Glide® | Saddlebag (stretched) | 2014–2023 |
| Road Glide® | Saddlebag (stretched) | 2015–2023 |
| Electra Glide® | Saddlebag (stretched) | 2014–2023 |
| Ultra Classic® / Ultra Limited | Saddlebag (stretched) | 2014–2023 |
Technical Specifications
| Amplifier Power | 300W Class-D (integrated) |
| Subwoofer Configuration | Down-firing driver with passive radiator |
| Motor | Neodymium |
| Enclosure Material | Rotomolded ABS |
| Port Type | Hydrophonic membrane (waterproof acoustic vent) |
| Input Types | High-level (speaker-level) and low-level (RCA line-level) |
| Harness | Plug-n-play — OEM Boom!™ Box and aftermarket head unit compatible |
| Connectors | Waterproof quick-disconnect |
| Bag Compatibility | Stretched hard-shell saddlebags — HD Part No. 90201078DH |
| Variants | HD14.SBWL — clutch side (left); HD14.SBWR — brake side (right) |
| Sold As | Single unit per order — order both variants for dual-bag installation |
| Warranty | 1 year through Motorcycle Audio Australia |
In the Box
- Precision Power HD14.SBW powered saddlebag subwoofer — single unit (select HD14.SBWL or HD14.SBWR)
- HD14.SBV acoustic vent kit
- Plug-n-play wiring harness
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.
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.