Precision Power MAS.694 – 6×9" 4-Ohm Saddlebag Speakers for Harley-Davidson Touring

What's Inside the MAS.694

The defining feature of the MAS.694 is its patent-pending inverted magnet design. In a conventional speaker, the neodymium motor sits at the rear of the frame — and in a sealed saddlebag, that means heat from the motor has nowhere to go. The bag traps it, temperatures climb inside the enclosure, and over time the magnet degrades, the surround softens, and the items stored in the bag suffer the consequences. The MAS.694 relocates the neodymium motor to the front of the speaker, integrating it into the coaxially mounted diecast aluminium tweeter housing. Aluminium conducts heat — where a plastic or polymer housing would insulate it. The housing draws thermal energy away from the motor and exposes it to ambient airflow, moving heat out of the saddlebag rather than accumulating it inside. In an amplified build, the speaker is handling more power and generating more heat than in a factory-radio system — making the thermal design more important, not less. On the road: at sustained amplified volume on a long summer day, the aluminium housing keeps motor temperature in check — protecting the speaker and whatever you carry in the bag from the heat a conventional speaker would trap inside.

The cone is UV-resistant polypropylene, 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 a saddlebag environment creates — from cold morning starts to sustained summer heat — without the degradation that affects foam surrounds over time. On the road: the speaker's acoustic behaviour in rain or summer heat is the same as on a dry winter morning. No compliance shift, no cone sag — the response you set up on day one stays stable 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 amplified build, the speaker is receiving more power and generating more heat than in a factory-radio system. The aluminium former manages that heat load and maintains consistent power handling under sustained amplified operation. The neodymium motor delivers high magnetic flux density in a low-mass package — the field strength needed for efficient output in an amplified build without adding unnecessary mass. On the road: at sustained amplified volume in a closed saddlebag on a hot day, the aluminium former keeps voice coil temperature in check — maintaining consistent power handling and output across the ride.

The tweeter is a 1" titanium dome — rigid, low-mass, and thermally stable. Titanium resists UV degradation, moisture, and temperature cycling better than fabric domes, which soften in the heat and exposure of a saddlebag environment. An integrated 6dB high-pass crossover rolls off low frequencies before they reach the tweeter, protecting it from excursion damage at the higher output levels an amplified build delivers. On the road: the titanium dome handles the power levels an amplified build puts into it, and maintains its acoustic character through weather and seasons. The clarity you hear on the first amplified ride is the clarity you get three summers later.

The glass fibre-reinforced ABS basket provides the structural rigidity needed to handle vibration transmitted directly through the saddlebag lid and into the speaker frame — keeping the motor and cone assembly aligned under the higher excursion of amplified operation.

Sensitivity and Impedance

At 92 dB (1W/1m), the MAS.694 converts amplifier power to acoustic output efficiently — important in a motorcycle system where charging system constraints limit available amplifier power. In an amplified build, sensitivity and amplifier output work together: a higher-sensitivity speaker produces more volume from the same watt than a lower-sensitivity alternative. The 4Ω impedance is the design operating point for most external amplifiers in stereo: it provides the correct load for the amplifier's output stage and gives better thermal margin than a 2Ω load at the same power level.

4Ω — What It Means for Your System

External amplifiers are designed around an output impedance that their output stage drives efficiently and safely. Most quality motorcycle amplifiers — including the MAA4.400 — are rated at both 4Ω and 2Ω in stereo, and at 2Ω in bridged mode. The 4Ω stereo operating point produces less heat and draws less current from the electrical system than 2Ω — giving the amplifier more thermal headroom for sustained operation. In bridged mode, the 4Ω speaker presents a 2Ω load to the amplifier — the minimum rated impedance for the bridged configuration, and the safe lower limit that keeps the amplifier out of thermal protection under sustained use. Running a 2Ω speaker in bridged mode would present a 1Ω load — below the safe operating limit for most amplifiers. The MAS.694 is the correct saddlebag speaker for any bridged-amp configuration.

Fitment

The MAS.694 requires a 6×9" saddlebag lid cut-in. Factory Harley-Davidson® saddlebag lids do not include a speaker cut-out. Use the HD14.SBS (2014+) or HD13.SBS (1998–2013) for installation.

Technical Specifications

In the Box

• Precision Power MAS.694 6×9" 4Ω coaxial speakers — pair