Hertz Uno Series Full Audio Upgrade Combo (K165 Component Front + X165 Coaxial Rear)

Transform Your Cabin Sound with the Hertz Uno Full Audio Combo

Ditch thin, distorted factory sound and experience rich, studio-quality acoustic detail on every drive. The Hertz Uno Series Full Audio Upgrade Combo brings premium Italian audio engineering straight to your car doors. By pairing the precise imaging of the K165 Component System in the front with the deep “rear fill” depth of the X165 Coaxial Systemin the back, this four-door bundle delivers a perfectly synchronized, immersive acoustic soundstage for all passengers.

Acoustic Engineering & Uniform Soundstage

Front Stage Precision: K165 2-Way Component Kit

The front system isolates critical frequencies to dramatically improve vocal clarity. It positions separate 24 mm Neodymium PEI dome tweeters at dashboard level for an expansive, crisp treble soundstage, while the dedicated 6.5-inch mid-bass woofers deliver punchy, clear mid-range performance down low.

Immersive Rear Fill: X165 2-Way Coaxial Kit

The rear doors are handled by high-fidelity coaxial units featuring integrated tweeter faceplates optimized for exceptional off-axis response. This means rear passengers get linear, full-range frequency coverage even when speakers are positioned low down in factory door panels.

Signature Hertz V-Cone Technology

Both front and rear woofers utilize Hertzs proprietary V-cone profile paired with water-repellent pressed-paper cones. This advanced geometry guarantees phenomenal linear dispersion and detailed mid-high reproduction, even when pushing the speakers to high SPL (Sound Pressure Level) volumes.

Why Choose the Hertz Uno Audio Combo?

• Matched Sonic Signature: Running the exact same speaker line in all four doors prevents frequency mismatches and phase cancellation, giving your vehicle a uniform, fluid acoustic environment.

• Extreme All-Climate Durability: The specialized water-repellent treatment on the paper cones prevents moisture damage inside damp door panels during heavy monsoon seasons, maintaining long-term acoustic accuracy.

• Undistorted High Dynamics: Driven by heavy-density flux ferrite magnets and high-purity copper voice coils, this kit maintains structural control over heavy bass tracks without turning muddy.

Technical Specifications

• Front Speakers (K165): 6.5″ (165mm) 2-Way Component System

• Front Power Handling: 75W RMS / 300W Peak (Per Pair)

• Rear Speakers (X165): 6.5″ (165mm) 2-Way Coaxial System

• Rear Power Handling: 55W RMS / 220W Peak (Per Pair)

• System Impedance: 4-Ohms (Universal compatibility)

• Frequency Range: 55 Hz 23 kHz (Front) | 60 Hz 21 kHz (Rear)

• Sensitivity Rating: 93.5 dB SPL (High efficiency for crisp audio on stock power)

• Cone Materials: Water-repellent stiff pressed-paper with durable foam surround

Frequently Asked Questions

1. Can I run this combo directly off my factory company stereo?

Yes, absolutely. The Hertz Uno series is specifically engineered with an ultra-high sensitivity rating of 93.5 dB. This means they require minimal power to wake up, allowing them to deliver massive volume, clearer vocals, and tighter bass directly from a stock factory head unit without requiring an external amplifier.

2. Where are the crossovers installed for the front component kit?

To ensure a hassle-free, clean OEM installation, Hertz integrated the 6dB/Oct crossovers directly inline with the tweeter wiring. There are no bulky plastic crossover boxes to hide inside your door panelssimply plug, mount, and play.

3. Will these fit standard 6.5-inch factory speaker slots?

Yes. Both the K165 and X165 feature compact, low-profile DIN-sized baskets protected by an abrasion-resistant matte dust paint. They drop straight into standard 6.5-inch door brackets across a massive range of vehicles with standard clearance.