Hertz Uno X 690 6x9" 4-Way Coaxial Speakers – 85W RMS, 4Ω

Hertz X 690 is a 6x9-inch 4-way coaxial speaker designed as a high-output replacement for vehicles with factory 6x9 speaker locations.

This is a coaxial (full-range) speaker that integrates multiple high-frequency elements with the midbass driver in a single assembly.

Category: 6x9 coaxial speakers (4-way).

In a system, the X 690 is intended to handle full-range playback from a head unit or external amplifier, providing midbass plus extended high-frequency response from a single speaker location.

Installation is intended for OEM 6x9 locations. Verify mounting depth and opening dimensions against the physical measurements below before install.

Key Performance Features

• 6x9-inch 4-way coaxial architecture for full-range playback in OEM 6x9 locations
• Continuous power handling: 85 W RMS
• Peak power handling: 340 W (manufacturer rating)
• Frequency response: 45 Hz – 22 kHz
• High-frequency section includes a PEI dome and piezoelectric super-tweeter elements (manufacturer design)

System Architecture

• Type: Coaxial
• Way configuration: 4-way
• Nominal impedance: 4 Ω

Power Handling / Output

• Continuous (RMS): 85 W
• Peak: 340 W

Driver / Construction

• Cone: Water-repellent pressed paper
• Dome material: PEI
• Woofer magnet: High density flux ferrite
• Tweeter magnet: Ferrite
• Woofer voice coil Ø: 25 mm (1")
• Tweeter voice coil Ø: 20 mm (0.8")
• Tweeter diaphragm: 40 mm (1.6")
• Woofer magnet size (D x d x h): 80 x 40 x 15 mm (3.15 x 1.57 x 0.59")
• Xmech: ±4.3 mm (0.17")

Installation Use Cases

• Replacing factory 6x9 speakers while keeping an OEM-style mounting location
• Full-range rear fill or main speaker duty in vehicles that use 6x9 openings
• Systems driven by a head unit or amplifier where a single coaxial solution is preferred

Technical Specifications

• Brand: Hertz
• Series: Uno
• Model: X 690
• Component: Coaxials
• Size: 6 x 9 in.
• Impedance: 4 Ω
• Power Handling (Continuous): 85 W
• Power Handling (Peak): 340 W
• Frequency Response: 45 Hz – 22 kHz
• Weight (one speaker): 0.93 kg (2.05 lb)

Physical Specs

• A: 237.3 mm (9.34")
• B: 224 mm (8.82")
• C: 91 mm (3.58")
• D: 75 mm (2.95")
• E: 162.2 mm (6.39")
• F: 154 mm (6.06")
• G: 264 mm (10.39")
• H: 192 mm (7.56")
• I: 28.5 mm (1.12")

What’s Included

• Hertz X 690 coaxial speakers

Why Buy From MCOR Automotive

• Authorized dealer support and product matching help (fitment, power pairing, and system layout)
• Install-focused guidance from an automotive electronics shop
• Knowledgeable support for troubleshooting and system integration

Physical Specs

A	237,3 mm	9.34 in.
B	224 mm	8.82 in.
C	91 mm	3.58 in.
D	75 mm	2.95 in.
E	162,2 mm	6.39 in.
F	154 mm	6.06 in.
G	264 m	10.39 in.
H	192 mm	7.56 in.
I	28,5 mm	1.12 in.