Hertz C 165 is a 6.5" (165 mm) midbass woofer engineered for natural tone, high damping, and controlled output. Hertz developed the cone material through a long R&D process and selected SPP-M (Semi Pressed Paper-Mica)—a semi-pressed paper cone reinforced with mica powder to increase rigidity while preserving the smooth, organic character of paper. The goal is simple: strong midbass with control. The SPP-M cone balances lightness and damping for clean impact, while the oversized high-density ferrite motor helps maintain control at higher excursion levels. Key Performance Features SPP-M cone: 165 mm (6.5") semi-pressed paper reinforced with mica powder for stiffness + damping Motor design: high-density flux ferrite magnet with low-carbon polar plates to reduce distortion at higher power Voice coil: 25 mm (1") coil with an aluminum former for excursion capability and power handling Basket & damping: compact 3-spoke basket with a rubber magnet cover to reduce spurious vibration Optional grille: ABS frame with metallic finish + protective metal mesh Technical Specifications Component: Woofer Size: 165 mm (6.5") Power Handling (Continuous): 70 W Power Handling (Peak): 210 W Impedance: 4 Ω Voice Coil Ø: 25 mm (1") Frequency Response: 55 Hz – 7 kHz Magnet: High density flux ferrite Magnet Size (D x d x h): 85 x 32 x 15 mm (3.35 x 1.26 x 0.59 in.) Cone Material: Semi-pressed paper + mica (SPP-M) Xmech: 4.9 mm (0.19") Weight (each): 0.96 kg (2.12 lb.) Buyer Use Cases Replacing weak factory 6.5" woofers for stronger midbass Front-stage midbass in component systems (paired with separate tweeters) Sound-quality builds needing controlled, non-boomy midbass Amplified or high-power head unit speaker upgrades What’s Included (2) Hertz C 165 6.5" woofers Documentation (as supplied by manufacturer) Optional grille may be available depending on configuration Why Buy From MCOR Automotive System matching support (amp power, crossover points, tuning guidance) Real-world install experience from an audio-focused restyling shop Fast fulfillment with knowledgeable support Fitment, Installation & Warranty Notes Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.
