Hertz Cento Pro CPK 690 - 6x9 Inch 2-Way Component System with Tetolon Tweeter and Paper Cone
The Cento Pro CPK 690 is a 6x9-inch component system that makes optimal use of oval installation spaces, providing you with clean, powerful reproduction in many vehicles – often Ford and Toyota. The elliptical mid-woofer features a stiff, lightweight paper cone and achieves a low resonance frequency through optimized electro-acoustic parameters. Together with the CP 25 Tetolon tweeter and the tuned CPCX 690 crossover, a controlled, detailed soundstage is created – even at higher volumes.
Technical Highlights
- 6x9 inch oval format for OEM installation spaces with elliptical mid-woofer
- Pressed paper cone with FEM-optimized geometry for precise, low-distortion sound
- CP 25 tweeter with 29 mm Tetolon dome, 25 mm voice coil and ferrofluid cooling
- Powerful neodymium drive in high and low frequencies for control at high levels
- CPCX 690 crossover with adjustable high-frequency level (-2/0/+2 dB) and defined crossover
- Low system resonance and voice coils designed for high power handling
Technical Data
- Size: 6 x 9 inches
- Power handling (RMS/Peak): 120 W / 360 W
- Impedance: 4 Ohm
- Tweeter diaphragm: 29 mm
- Woofer voice coil: Ø 30.5 mm
- Tweeter voice coil: Ø 25 mm
- Sensitivity: 92 dB (SPL)
- Frequency response: 35 Hz – 22.5 kHz
- Crossover: LP 6 dB/oct., HP 12 dB/oct. (2-way)
- Woofer weight: 1.69 kg
- Tweeter weight: 0.07 kg
- Crossover weight: 0.2 kg
Electro-acoustic Parameters
- Effective diaphragm diameter (D): 172 mm
- Re: 3.2 Ohm
- Fs: 58 Hz
- Le: 0.33 mH
- Vas: 22.8 l
- Mms: 25.3 g
- Cms: 0.30 mm/N
- BL: 6.9 T*m
- Qts: 0.48
- Qes: 0.62
- Qms: 2.2
- SPL: 92.5 dB
Components in Detail
- CP 25 Tweeter
- 29 mm Tetolon dome and 25 mm voice coil, ferrofluid-cooled for consistent performance
- Center Tuning Duct for low resonance frequency and reduced distortion
- Neodymium magnet for high control in high/mid frequencies
- Damped rear chamber to further lower self-resonance
- FEM-optimized faceplate for linear off-axis radiation
- Mounting accessories for OEM positions
- CP 690 Mid-woofer
- Pressed paper cone, FEM-optimized for stiffness with low weight
- 30 mm, two-layer voice coil for high excursion and power handling
- Neodymium magnet with low-carbon pole plates for distortion reduction at high levels
- Compact 3-spoke basket with rubberized magnet protection for vibration damping
- CPCX 690 Crossover
- Tweeter level selectable: -2 / 0 / +2 dB
- Crossover: 3.1 kHz (HT 12 dB/oct., MW 6 dB/oct.) for a coherent soundstage in the vehicle
- 160 V capacitors with low ESR and pure copper coils for transparency in high frequencies
- Compact, ventilated housing for easy placement and heat dissipation
Installation & Compatibility
The 6x9 format fits many factory installation spaces, especially in US and Asian models such as Ford and Toyota. Thanks to the adjustable tweeter level, you can adapt the sound to the seating position and vehicle acoustics. The compact crossover and accessories facilitate integration into OEM positions. Pay attention to sufficiently stable fastening and sealed mounting surfaces so that the mid-woofer can unleash its full potential.
