Ground Zero GZC 165‑30A - 6.5″ 2-way Audiophile Grade Component Speaker System | 30th Anniversary Edition

GZC 165‑30A | 6.5″ Component Speaker System | 140 W RMS | 88 dB SPL

The Ground Zero GZC 165‑30A is a special 30th Anniversary edition 6.5″ component speaker system delivering exceptional sound and collector appeal in a limited-production release. The mid-bass features a rigid cast aluminum basket with a non-pressed paper cone and durable rubber surround, optimized via KLIPPEL analysis for exceptionally low distortion. The silk-dome tweeter (28 mm) is housed in an anodized aluminum case with a damped coupling chamber for smooth, refined high-frequency output.

With 140 W RMS (220 W peak) power handling, 4 Ω impedance, and 88 dB sensitivity, the set suits moderate amp power or high-output factory systems enhanced with external amplification. A variable 12 dB/octave crossover allows you to fine-tune mid-bass and tweeter levels to suit installation location or musical preference. As a limited-edition build, it's both functional and collectible.

Product Highlights:

Premium 2-way system: 165 mm (6.5″) mid-woofer and 28 mm silk-dome tweeter

High-performance 30th Anniversary edition with refined acoustic tuning

Cast aluminum basket: Rigid, resonance-resistant woofer frame

Non-pressed paper cone: Natural midrange and warm tonal character

Silk-dome tweeter: 28 mm coated diaphragm in aluminum housing

Wideband frequency response: 40 Hz – 24 kHz for rich detail

Optimized factory/aftermarket use: 88 dB sensitivity at 4 Ω

Passive 2-way crossover: 12 dB/oct slope with level adjustment

High power handling: 140 W RMS / 220 W peak for amplified systems

Tech Specs:

Model: GZC 165‑30A

Type: 2-Way Component Speaker System

Woofer: 165 mm (6.5″) non-pressed paper cone

Tweeter: 28 mm (1.1″) coated silk-dome in aluminum housing

Power: 140 W RMS / 220 W Peak

Sensitivity: 88 dB

Impedance: 4 Ω

Frequency Response: 40 Hz – 24 kHz

Installation: Aftermarket or OEM-compatible amplified setups

Mounting Depth: ~69 mm (2.72″)

Mounting Diameter: ~144 mm (5.67″ standard 6.5″ fitment)

Applications: Front-stage upgrade for custom or SQ-focused builds