| Size | 5x7 · Coaxial |
| Impedance | 2 Ohm |
| Power | 100W RMS |
| Year Range | 1998-2013 |
| Location | Saddlebags |
The thermal-forward 5×7" saddlebag coaxial for Harley Touring — inverted magnet design draws heat out of the bag, not into it.
The MAS.572 is Precision Power's 5×7" 2Ω coaxial for Harley-Davidson® Touring saddlebag lid positions — engineered around the thermal problem that conventional rear-magnet speakers create in closed saddlebag environments. A patent-pending inverted design relocates the neodymium motor to the front of the speaker, integrating it into the coaxially mounted tweeter pod. A diecast aluminium housing conducts heat from the motor outward into ambient airflow — away from the bag, not into it. 100W RMS, 92 dB sensitivity, polypropylene cone with Santoprene surround, 1" titanium dome tweeter. Sold in pairs. Lid kit required for most installs.
Saddlebag speakers face a thermal challenge that no other motorcycle speaker position shares. The enclosed bag space traps heat from the speaker motor — raising temperatures inside the bag, shortening speaker life, and damaging stored items over time. Conventional rear-magnet designs make this worse: the magnet sits at the back of the speaker, inside the bag, acting as a heat source with nowhere to dissipate to. The MAS.572 reverses this with an inverted motor architecture that actively moves heat in the right direction.
Who This Speaker Is For
Riders with 5×7" saddlebag lid positions on Harley-Davidson® Touring models who want a rear-stage upgrade engineered for the thermal reality of saddlebag use. The MAS.572 suits builds running on factory Boom!™ Box radio power or a compact dedicated rear-channel amplifier. Note that the MAS.572 is a single-input coaxial speaker and is not compatible with Boom! Stage II dual-input wiring configurations — see the compatibility note below before ordering.
What This Is Best For
- Thermal management in closed saddlebags: The inverted magnet relocates the heat source to the front of the speaker, where the diecast aluminium tweeter housing conducts it away from the bag space into ambient airflow. This matters most on long-distance touring builds and bikes ridden in warm conditions — it's the difference between a speaker that degrades the riding environment and one that actively manages the problem.
- Maximum output from factory radio and compact amplifier power: At 2Ω and 92 dB sensitivity, the MAS.572 extracts strong rear-stage output from factory Boom!™ Box head units and compact motorcycle amplifiers alike. The 2Ω impedance draws more current from the source at fixed voltage — producing more acoustic output than a 4Ω rear-stage speaker from the same head unit without additional amplification.
- 5×7" saddlebag lid installs: The MAS.572 is a direct fit for 5×7" saddlebag speaker positions — compatible with Precision Power saddlebag lid kits and other aftermarket lid systems. A compatible lid cut-in kit is required for factory Harley-Davidson® saddlebag installations; the speaker does not fit the factory lid without one.
- Long-term durability in the saddlebag environment: Polypropylene cone, Santoprene surround, titanium dome tweeter, and glass fibre-reinforced ABS basket are selected for resistance to moisture, UV, vibration, and the temperature extremes that shorten the life of cheaper saddlebag speakers prematurely.
Before You Order — Compatibility Notes
Boom! Stage II dual-input wiring: The MAS.572 is a single-input coaxial speaker. Harley-Davidson® Boom! Stage II saddlebag systems use separate amplifier channels for the woofer and tweeter — the MAS.572 cannot be wired directly into this configuration. If your bike runs a Boom! Stage II system, an aftermarket amplifier in the signal path is required, or a bi-amplified saddlebag speaker designed for dual-input operation.
Lid kit required: A compatible 5×7" saddlebag lid cut-in kit is required for most factory Harley-Davidson® Touring saddlebag installations. Contact Motorcycle Audio Australia if you need help confirming the correct kit for your specific model and year.
The Bottom Line
The MAS.572 is the saddlebag speaker built for the environment where it actually operates. The patent-pending inverted motor architecture actively moves heat away from the bag — not into it — and the 2Ω impedance extracts maximum output from factory radio power without adding amplification. Polypropylene cone, Santoprene surround, titanium dome, and aluminium-former voice coil are selected for the conditions that wear out conventional saddlebag speakers: heat, moisture, UV, and vibration. A lid kit is required for most installs — contact Motorcycle Audio Australia to confirm the correct kit for your model and year.
What's Inside the MAS.572
The inverted neodymium motor with diecast aluminium tweeter housing is the MAS.572's defining engineering detail. Where a conventional speaker positions the magnet at the rear — inside the saddlebag, accumulating heat with no escape path — the MAS.572 relocates it to the front of the speaker, integrated into the coaxially mounted tweeter pod. The diecast aluminium housing conducts thermal energy from the motor outward, where ambient airflow moving past the exterior of the pod carries it away from the bag space. This patent-pending design runs cooler, lasts longer, and does not create a heat problem for saddlebag contents on extended rides. On the road: after an hour at highway speed with the rear stage running hard, the inside of the bag stays cooler than it would with a conventional rear-magnet speaker. The heat is going the right direction.
The 1" titanium dome tweeter sits in the aluminium housing, benefiting from the same thermal conduction path as the motor. Titanium is rigid, low-mass, and thermally stable — it moves quickly and accurately at high frequencies without the breakup modes that limit softer dome materials. It resists UV degradation, moisture, and temperature cycling better than fabric domes, which soften over time in the heat and exposure of the saddlebag environment. An integrated 6dB high-pass crossover rolls off low frequencies before they reach the tweeter, protecting it from excursion damage at high output levels. On the road: the titanium dome maintains its acoustic character through rain, summer heat, and years of saddlebag use. The clarity you get on the first ride is the clarity you get three seasons later.
The polypropylene cone is co-moulded with a low-density Santoprene surround through a chemical bonding process — not mechanical joining. Polypropylene is impermeable: road spray, humidity, and condensation do not affect its acoustic properties or structural integrity. Santoprene holds its compliance across the temperature extremes of saddlebag use — from cold morning starts to sustained summer heat — without the hardening or delamination that affects foam surrounds in this environment. On the road: the speaker's acoustic behaviour in a wet autumn run is the same as on a hot summer touring day. No compliance shift, no cone sag — consistent response across the seasons.
The 1.25" (31.75mm) oxygen-free copper voice coil is wound on a thermally absorbent aluminium former. Aluminium conducts heat away from the voice coil windings faster than paper or Kapton — transferring it to the air gap and basket, where it can dissipate. In an enclosed saddlebag where sustained high-volume operation is common on touring rides, thermal management at the voice coil level compounds the benefit of the inverted motor design. On the road: at sustained volume over a long touring day, the aluminium former keeps voice coil temperature in check — maintaining consistent power handling and protecting against the thermal compression that degrades output when cheaper voice coils overheat.
The glass fibre-reinforced ABS basket provides structural rigidity under the vibration transmitted through the saddlebag lid directly into the speaker frame — keeping the motor and cone assembly aligned across extended high-volume riding in demanding road conditions.
Sensitivity and Impedance
At 92 dB (1W/1m), the MAS.572 produces strong rear-stage output from the limited power of a factory Boom!™ Box radio or compact motorcycle amplifier. The 60 Hz – 22 kHz frequency response is appropriate for a well-designed 5×7" coaxial in a saddlebag enclosure. For amplified rear-stage systems, a high-pass crossover set above 80 Hz at the amplifier protects the driver and allows it to operate within its efficient output range without being asked to reproduce sub-bass frequencies below its design range.
2Ω — What It Means for Your System
At fixed source voltage, power delivered to the speaker is determined by the speaker's impedance: halving the impedance doubles the current and doubles the power. A 2Ω speaker draws twice the current of a 4Ω speaker from the same source — extracting more power and producing more acoustic output. In rear saddlebag positions driven by a factory radio or a compact dedicated rear-channel amplifier, the 2Ω configuration gets the most from the available power without requiring a higher-rated source. Confirm impedance compatibility with your amplifier if running an external amplifier in a bridged configuration — bridging halves the impedance the amplifier sees, and a 2Ω speaker on a bridged channel presents a 1Ω load below the safe operating limit of most amplifiers.
Fitment
The MAS.572 fits 5×7" saddlebag speaker positions. A compatible saddlebag lid cut-in kit is required for most factory Harley-Davidson® Touring saddlebag installations — the speaker does not fit the factory lid without one.
| Model | Position | Notes |
|---|---|---|
| Street Glide® | Saddlebag lid | Requires compatible 5×7" lid cut-in kit |
| Road Glide® | Saddlebag lid | Requires compatible 5×7" lid cut-in kit |
| Electra Glide® | Saddlebag lid | Requires compatible 5×7" lid cut-in kit |
| Ultra Classic® / Ultra Limited | Saddlebag lid | Requires compatible 5×7" lid cut-in kit |
| Road King® | Saddlebag lid | Requires compatible 5×7" lid cut-in kit |
Technical Specifications
| Speaker Configuration | 5×7" 2-way coaxial |
| Impedance | 2Ω nominal |
| Power Handling (RMS) | 100W RMS |
| Power Handling (Peak) | 200W |
| Sensitivity | 92 dB (1W/1m) |
| Frequency Response | 60Hz – 22kHz |
| Tweeter | 1" titanium dome, wide-dispersion |
| Tweeter Housing | Diecast aluminium (thermal dissipation) |
| Tweeter Crossover | Integrated 6dB high-pass |
| Voice Coil | 31.75mm (1.25") oxygen-free copper on aluminium former |
| Motor | Neodymium (inverted / front-mount design) |
| Cone | UV-resistant polypropylene with co-moulded Santoprene surround |
| Basket | Glass fibre-reinforced ABS |
| Mounting Depth | 50.8mm (2.0") |
| Quantity | Pair |
| Warranty | 1 year through Motorcycle Audio Australia |
In the Box
- Precision Power MAS.572 5×7" 2Ω coaxial speakers — pair
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.