Infinity REF687F 6x8 Inch 2-Way Car Speakers – Pair | Reference Series

Meet the Infinity REF687F 6x8 inch, 2-way car speakers — a refined upgrade designed to fit a wide range of vehicles without sacrificing sound quality. These Reference Series speakers aim to deliver a balanced, engaging listening experience for daily commutes and weekend road trips alike.

Precision acoustic engineering

The audiophile-grade tweeters are engineered to sound smooth and non-fatiguing, even when you push the system to higher output levels. This helps preserve clarity across the upper midrange and highs, making cymbals shimmer and vocal sibilance stay natural rather than harsh.

• Smooth high-frequency response for detailed imaging
• Low distortion at elevated listening levels

Advanced design for real-world listening

The Reference line features Harman’s patented Plus One cones, which provide more overall cone area than similarly sized alternatives. The result is higher sensitivity, more pronounced bass presence, and accurate music reproduction across a broader range.

In parallel, larger multielement and component systems include a tweeter output level control so you can tailor the system’s linearity to your vehicle’s acoustics or your personal preference.

• Higher overall efficiency and stronger bass extension
• Fine-tuned highs to suit installation location

Compact, flexible fit

Infinity designs these speakers with a compact footprint to fit just about any vehicle on the road today. This helps simplify installation in doors or dash locations where space is at a premium while still delivering robust sound.

For best results, pair the REF687F with an appropriate amplifier and crossovers to unlock the full dynamic potential. The goal is a clear, engaging soundstage that brings out detail in your favorite tracks without overwhelming distortion.

What you might notice in everyday use

Expect crisp percussion, expansive midrange, and a confident bass presence when paired with the right system. The experience can feel more soulful on acoustic tracks and more energetic on rhythm-forward mixes, all while maintaining natural balance.

Why choose Infinity REF687F

From build quality to consistent sound reproduction, these speakers are designed for real-world listening. Every detail, from the exterior grill integration to the voice coil and crossover components, supports reliability and stable performance across conditions.

• Durable construction for long-term use
• Consistent performance across volumes

Installation tips

Verify mounting depth, use appropriate adapters if required, and seal gaps to minimize unwanted vibrations. Additional enclosure or door dampening can enhance sound staging and imaging for a more natural listening experience.