Hertz MPX 690.3 Mille Pro 6x9 3-Way Coaxial Speakers (Pair)

The Hertz MPX 690.3 is a pair of Mille Pro 6x9 inch 3-way coaxial car audio speakers rated 130 watts RMS and 260 watts peak at 4 ohms, optimized for rear-deck and rear-shelf mounting in any 12-volt vehicle with 6x9 speaker openings. A 35 mm (1.4 in.) Tetolon-dome tweeter with neodymium magnet rides a faceplate profiled to maximize off-axis dispersion, and a 29 mm (1.14 in.) Tetolon supertweeter reinforces the very top of the range out to 24 kHz.

The 6x9 woofer pairs a pressed-pulp cotton-fiber cone with a 38 mm (1.5 in.) voice coil on a high-density flux ferrite motor, while the basket's radial venting system keeps operating temperatures low during extended high-dynamic listening. With 94 dB sensitivity, the pair delivers strong output from head-unit or amplifier power alike.

What's Included

Sold as a pair of coaxial speakers. Protective mesh grilles are included.

Specifications

• Size: 6 x 9 in. 3-way coaxial
• Impedance: 4 ohm
• Power handling: 130 W continuous (RMS), 260 W peak per speaker
• Frequency response: 30 Hz - 24 kHz; sensitivity: 94 dB SPL
• Tweeter: 35 mm (1.4 in.) Tetolon dome, neodymium magnet, 28 mm (1.1 in.) voice coil
• Supertweeter: 29 mm (1.14 in.) Tetolon dome
• Woofer: pressed-pulp cone with cotton fibers, 38 mm (1.5 in.) voice coil, high-density flux ferrite magnet
• Overall width: 241 mm (9.49 in.); mounting depth: 108 mm (4.25 in.)
• Weight: 2.28 kg (5.03 lb) per speaker
• Grilles: included

Fitment / Compatibility

These are universal 12-volt coaxial speakers with no vehicle-specific fitment — they install in any car or truck with 6x9 inch speaker locations offering 108 mm (4.25 in.) of mounting depth, and the 3-way layout is optimized for rear-deck mounting. They do not fit round 6.5 inch openings; that size is covered by the 2-way Hertz MPX 165.3.

Are the Hertz MPX 690.3 sold as a pair?

Yes. The MPX 690.3 is sold as a pair of two 6x9 coaxial speakers, one for each side of the vehicle.

Do the MPX 690.3 come with grilles?

Yes. Protective mesh grilles are included with the pair, unlike the 6.5 inch MPX 165.3 whose grilles are an optional accessory.

Do I need an amplifier for the MPX 690.3?

No amplifier is included and none is strictly required — these are passive 4-ohm speakers with high 94 dB sensitivity that run from head-unit power, while their 130 watt RMS rating leaves headroom for a dedicated amplifier.

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

The MPX 690.3 is a 6x9 inch 3-way coaxial (130 W RMS, 94 dB, tweeter plus supertweeter, grilles included) for rear decks, while the MPX 165.3 is a 6.5 inch 2-way coaxial (100 W RMS, 92 dB) for round door openings with optional grilles.