Diamond Audio 6.5" HEX Series 2-Way Component Set w/25mm Aluminum Dome Tweeter - H65A
Dial in razor-sharp detail and energetic high-frequency performance with the Diamond Audio H65A 6.5" 2-way component speaker system, engineered for precision-focused car audio enthusiasts who want a more dynamic and revealing sound signature. As part of the premium HEX Series, the H65A delivers crisp highs, accurate midrange, and tight mid-bass with unmistakable clarity.
At the foundation of the H65A is a 6.5-inch mid-woofer featuring a hard anodized black aluminum cone, designed for excellent rigidity and fast response. This advanced cone construction produces tight, controlled mid-bass and highly accurate midrange reproduction, ensuring vocals and instruments are delivered with precision and impact.
The defining feature of this model is the 25mm aluminum dome tweeter, built for extended high-frequency response and enhanced detail retrieval. Compared to silk dome tweeters, the aluminum dome delivers a more forward, brighter, and highly detailed sound, making it ideal for listeners who prefer a more analytical and lively top-end. Equipped with a neodymium motor and ferrofluid cooling, the tweeter maintains clean output even at higher volume levels.
The die-cast aluminum basket provides a rigid, resonance-resistant platform, while the FEA-optimized high-power motor with a vented pole piece ensures efficient heat management and consistent performance.
Included are model-specific adjustable crossovers, allowing fine-tuning with -2dB, 0dB, and +2dB tweeter attenuation, along with a phase switch for optimizing sound staging. The integrated Rear Acoustic Fill (RAF) output expands the soundstage, delivering a more immersive listening experience.
With 75W RMS power handling, optimized sensitivity, and premium engineering, the H65A is perfect for both factory upgrades and custom builds.
The Diamond Audio H65A HEX Series speakers deliver high-definition clarity, sharp detail, and dynamic performance, making them the ideal choice for those who want a more energetic and precise sound experience without compromise.
Features
• Model: H65A – HEX Series
• 6.5" 2-way component speaker system
• Aluminum dome tweeter for crisp, detailed highs
• Hard anodized aluminum cone for accurate mid-bass
• Die-cast aluminum basket for durability
• Adjustable crossover with phase and attenuation control
• Rear Acoustic Fill (RAF) output for expanded soundstage
• 75W RMS / 150W MAX power handling
What our Experts Think
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Engineered as a true component system for precise imaging, separation, and detailed front-stage sound.
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25mm aluminum dome tweeter delivers smooth, accurate high-frequency response with excellent clarity.
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6.5” midbass drivers provide tight, controlled low-end punch and natural vocal reproduction.
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Designed for high-fidelity performance upgrades in cars, motorcycles, and custom audio builds.
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External crossover network ensures clean frequency separation and reduced distortion at high volume.
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4Ω impedance offers broad compatibility with aftermarket amplifiers and DSP-based systems.
Q&A
Q: What is the Diamond Audio H65A?
A: Diamond Audio H65A 6.5" HEX Series 2-Way Component Speaker Set is a premium 6.5" 2-way component speaker system designed for high-fidelity sound, clarity, and dynamic range in car audio upgrades.
Q: What makes the HEX Series different?
A: The HEX Series focuses on audiophile-grade detail, using a rigid cone structure and precision motor design for low distortion and accurate sound reproduction.
Q: What type of tweeter is included?
A: A 25mm aluminum dome tweeter that delivers smooth, detailed high frequencies with excellent imaging and clarity.
Q: Is this a coaxial or component system?
A: It is a component set, meaning the woofer and tweeter are separate for better sound staging and installation flexibility.
Q: What is the sound profile like?
A: Balanced, detailed, and refined—prioritizing clarity, imaging, and accuracy over raw loudness.
Q: What systems is it best for?
A: Ideal for high-end car audio builds where sound quality, staging, and precision tuning matter most.
Q: What are the main benefits?
A: Improved stereo imaging, reduced distortion at higher volumes, and a more natural, studio-like listening experience.
Maintenance Tips
- Clean woofers, tweeters, and grilles with a soft, dry microfiber cloth.
- Keep aluminum dome tweeters free from dust, debris, and physical obstruction.
- Avoid direct high-pressure water and harsh chemical cleaners.
- Inspect crossovers and wiring connections regularly for tight, corrosion-free contact.
- Ensure speaker mounting hardware remains secure and vibration-free.
- Properly tune amplifier gain, EQ, and crossover settings to prevent distortion.
- Avoid prolonged high-volume playback to protect tweeter and voice coil integrity.
- Keep components away from excessive heat, moisture, and direct sunlight exposure.
- Periodically check for cone damage, tweeter clarity issues, or rattling sounds.
- Store vehicle in a covered, dry environment when not in use.
Damage 
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