Mb Quart Ql 60 C Extra Quality ((hot)) Official

MB Quart QL 60 C Extra Quality — Product Overview

The MB Quart QL 60 C Extra Quality is a compact 2-way coaxial car speaker designed for clear midrange and extended high-frequency response in aftermarket car audio systems. It’s aimed at listeners who want improved clarity and detail over factory speakers while fitting into common small-mount locations (e.g., 4"–6.5" openings depending on adapter).

The Crossover Network (QL 60 C)

This is where "Extra Quality" shines brightest. Many component speakers use single electrolytic capacitor on the tweeter. MB Quart used a 12dB/octave Linkwitz-Riley alignment with:

  • Air-core inductors (no core saturation at high power).
  • Mylar capacitors (low distortion vs. cheap ceramics).
  • Three tweeter level adjustments: 0dB, -3dB, and -6dB. This allows you to tame the titanium highs in reflective interiors like glass-filled cars.

Technical Deep Dive: Engineering That Defies Age

Even by modern standards, the specifications of the QL 60 C are impressive. mb quart ql 60 c extra quality

The Tweeter (QL 20)

  • Dome: Pure titanium. Titanium is brighter than silk or textile, but when properly crossvoered (as MB Quart does), it reveals micro-details in cymbals, hi-hats, and vocals that softer domes obscure.
  • Ferrofluid Cooling: Yes. This is critical for "Extra Quality." The fluid dampens resonances and conducts heat away from the voice coil, preventing harshness at high volumes.
  • Swivel Mount: The tweeter can be rotated 360 degrees and angled up to 20 degrees. This is essential for staging and imaging, allowing you to aim the high frequencies toward the listener’s ears.

What Does "Extra Quality" Mean for MB Quart?

Before dissecting the technical specifications, it is crucial to understand the "Extra Quality" moniker. In the 1990s and early 2000s, MB Quart used this label to differentiate their top-tier, hand-assembled drivers from mass-market production units.

"Extra Quality" for the QL 60 C implies: MB Quart QL 60 C Extra Quality —

  • Tighter manufacturing tolerances (matching drivers within 0.5dB of each other).
  • Premium material selection (no cost-cutting on voice coils or surrounds).
  • German engineering rigor applied to every crossover component.

This wasn’t just marketing fluff. The QL series was designed to compete with home audio loudspeakers, not just survive the harsh environment of a car door.

Unboxing the MB Quart QL 60 C: First Impressions

When you hold a MB Quart QL 60 C Extra Quality set, the physical weight tells you everything. Each component feels substantial. Air-core inductors (no core saturation at high power)

The set includes:

  • Two 6.5-inch (160mm) midbass drivers – With massive ferrite magnets and titanium-coated cones.
  • Two 1-inch (25mm) titanium dome tweeters – Mounted in swiveling housings for flexible aiming.
  • Two external, bi-ampable crossovers – Encased in stout, transparent plastic enclosures.
  • Mounting hardware and grilles – Including surface and flush-mount options.

The "Extra Quality" is evident in the terminals: heavy-duty gold-plated binding posts that accept bare wire, spades, or banana plugs—rare in car audio even today.

Bass Response (Tight and Punchy)

Do not expect subwoofer extension. The QL 60 C rolls off naturally around 60Hz. However, within its bandwidth, the bass is fast, accurate, and rhythmic. Kick drums hit your chest rather than rumbling your trunk. The sealed box alignment typical of door mounting rewards you with taut, controlled bass that integrates seamlessly with a subwoofer (crossed at 80Hz).