AC 6511 | 6.5" 2-Way Coaxial Car Speakers

The Alpha Series proves that "Made in Germany" is not a luxury reserved for flagships, rather it is our baseline. As the definitive entry point to the German Maestro signature sound, Alpha is engineered specifically for high-efficiency performance. This allows for a surgical audiophile upgrade even when integrated with low-output factory head units, providing a clearer, more precise drive right out of the box.

The Obrigheim Standard

This system features a robust composite basket woofer with a rigid polypropylene cone for solid mid-bass performance. The accompanying 0.75-inch tweeter uses a pure titanium dome made in Germany, ensuring crisp, detailed high frequencies. Compact crossovers make for an easy and flexible installation in any vehicle.

Authentic German Manufacturing

Every pair of German Maestro speakers is proudly designed, engineered, and assembled by our team in our own factory in Obrigheim, Germany. This commitment to in-house manufacturing ensures we meet the absolute highest standards of quality, precision, and durability.

Technical Specifications

• System Type: 2-Way Component System
• Tweeter Size: 0.75" (19 mm) Titanium Dome
• Woofer Size: 6.5" (16.5 cm) Polypropylene Cone
• Impedance: 4 Ω
• Power Handling: 50 W RMS / 120 W Max
• Frequency Response: 40 – 28,000 Hz
• Crossover Frequency: 4,000 Hz 12 dB/Oct
• Sensitivity: 88 dB (2.83V/1m)
• Grilles Not included