Welcome to OSCA Shop

We’re here to help you navigate car audio properly. We take pride in guiding enthusiasts of all levels, whether it’s a simple upgrade or a full system build.

Need Help? Talk to an expert

Product details

Key Features
  • Ceramic-coated aluminum cone helps deliver strong detail and clean midrange resolution
  • Linearised neodymium motor supports accuracy and control through the vocal band
  • Compact die-cast basket makes it easier to package into serious custom front stages
  • Dedicated midrange design improves staging and vocal focus over generic full-range solutions
  • Built for high-end active systems where midrange quality shapes the whole presentation
Advanced Specifications
  • Product type: High-end midrange speaker
  • Series: Plutonium Series
  • Model: GZPM 80SQ-C
  • Diameter: 80 mm / 3.15″
  • Power handling: 70W RMS / 110W max (with 12dB/oct HPF)
  • Impedance: 4 ohms
  • Frequency response: 150 Hz – 4 kHz
  • Efficiency: 89 dB
  • Voice coil: 20 mm
  • Cone: Ceramic-coated aluminum
  • Motor: Neodymium
  • Basket: Aluminum die-cast
  • Mounting diameter: 77 mm / 3.03″
  • Mounting depth: 39 mm / 1.54″
  • Resonance frequency (Fs): 100 Hz
  • Re: 3.5 ohms
  • Qms: 5.74
  • Qes: 0.30
  • Qts: 0.29
  • Vas: 1.50 L
  • Mms: 3.16 g
  • BL: 4.76 N/A
  • Rms: 0.34 kg/s
  • Cms: 0.81 mm/N
  • Le: 0.12 mH
  • Xmax: 7 mm total
  • Terminals: Gold-plated soldering terminal
  • Grille: GZ-design hexagon style NRG protection grill
  • Verification: Klippel® optimized
  • Packaging: 1 pair
Best Suited For
  • High-end 3-way front stage systems
  • Active and DSP-controlled builds using a dedicated midrange
  • Installations focused on staging, vocal clarity, and tonal accuracy
  • Users building a serious SQ-oriented front stage
  • Systems paired with premium tweeters and dedicated midbass drivers
Why OSCA Backs This Product

A proper midrange driver can change the whole character of a front stage. If the goal is better vocal focus, cleaner staging, and a more resolved presentation overall, this is exactly the sort of driver that helps get you there.

Trusted Brands for Serious Systems

Selected for Real-World Performance

Cutting Through the Noise of Car Audio

About Ground Zero 🚀

Ground Zero, established in 1995, is a German-engineered car audio brand with strong American performance roots, known for delivering high-output, competition-proven equipment built on real engineering, not hype. With distribution in over 80 countries and a full range of system components developed in Germany, the brand has earned global respect through consistent results in independent testing and demanding installs. From its origins in high-excursion subwoofer design to its evolution into a complete system solution, Ground Zero remains a go-to for enthusiasts and installers who value output, reliability, and proven performance.

Learn more about our brands

Fast Dispatch

Orders processed within 24 hours

Authorised Australian Seller

Genuine products from verified suppliers

Standard 12-Month Warranty

Manufacturer warranty on all products

Expert Support Available

Technical assistance from audio specialists