Hertz MPX 165.3 Mille Pro 6.5 Inch 2-Way Coaxial Speakers (Pair)

The Hertz MPX 165.3 is a pair of Mille Pro 6.5 inch (165 mm) 2-way coaxial car audio speakers rated 100 watts RMS and 200 watts peak at 4 ohms, a universal 12-volt upgrade for any vehicle with 6.5 inch speaker openings. The 25 mm Tetolon-dome tweeter sits concentric to the woofer, so the pair behaves as a single linear-phase emission point for natural timbre and a detailed sound stage.

The tweeter's Center Tuning Duct geometry keeps its resonance frequency low while internal damping material linearizes its output, and the acoustic lens optimizes off-axis response — the listening condition typical of door-mounted coaxials. Below it, a pressed-pulp cotton-fiber cone driven by a 36 mm voice coil on a high-density flux ferrite motor produces deep, controlled midbass, with 92 dB sensitivity making the pair an easy load on head-unit or amplifier power.

What's Included

Sold as a pair of coaxial speakers. Grilles are not included — the MPG 165.3 PRO grilles are an optional accessory sold separately.

Specifications

• Size: 165 mm (6.5 in.) 2-way coaxial
• Impedance: 4 ohm
• Power handling: 100 W continuous (RMS), 200 W peak per speaker
• Frequency response: 45 Hz - 21.5 kHz; sensitivity: 92 dB SPL
• Tweeter: 25 mm (1 in.) Tetolon dome, neodymium magnet, 20 mm voice coil, acoustic lens
• Woofer: pressed-pulp cone with cotton fibers, 36 mm (1.42 in.) voice coil, high-density flux ferrite magnet
• Mounting cutout: 132 mm; mounting depth: 62.6 mm (2.46 in.)
• Excursion: +/- 6 mm (0.24 in.)
• Weight: 1.27 kg (2.8 lb) per speaker

Fitment / Compatibility

These are universal 12-volt coaxial speakers with no vehicle-specific fitment — they install in any car, truck, or powersports vehicle with 6.5 inch (165 mm) speaker locations offering a 132 mm cutout and 62.6 mm (2.46 in.) of mounting depth. They do not fit 6x9 openings; that size is covered by the 3-way Hertz MPX 690.3.

Are the Hertz MPX 165.3 sold as a pair?

Yes. The MPX 165.3 is sold as a pair of two coaxial speakers, one for each side of the vehicle.

Do the MPX 165.3 come with grilles?

No. Hertz lists the MPG 165.3 PRO grilles as an optional accessory, so factory grilles or separately purchased MPG 165.3 grilles are needed if the mounting location leaves the speakers exposed.

Do I need an amplifier for the MPX 165.3?

No amplifier is included and none is strictly required — these are passive 4-ohm speakers with high 92 dB sensitivity that run from head-unit power, while their 100 watt RMS rating leaves headroom for a dedicated amplifier.

What is the difference between the MPX 165.3 and the MPX 690.3?

The MPX 165.3 is a 6.5 inch 2-way coaxial (100 W RMS, 92 dB) for round door openings, while the MPX 690.3 is a 6x9 inch 3-way coaxial (130 W RMS, 94 dB, added supertweeter) for rear-deck 6x9 openings.