DS18 6PRO300MB-4 6" Mid-Bass Loudspeaker 300 Watts 4-Ohm (each)

The DS18 6PRO300MB-4 is a 6.5" mid-bass loudspeaker built for enthusiasts who demand punchy bass and clear midrange in professional-grade car audio installs. It handles 150W RMS (300W max) into 4 ohms and covers 80 Hz to 6 kHz for solid mid-bass performance.

• Nominal Diameter: 6.5" / 165mm — provides a larger cone area for stronger mid-bass presence and better low-mid extension in typical car enclosures.
• Nominal Impedance: 4 Ohm — standard load that integrates with common high-performance amps and helps achieve efficient system power delivery.
• RMS Power Handling: 150W — continuous power the driver can sustain without thermal stress under regular use.
• Maximum Power Handling: 300W — peak capability to handle dynamic transients in music with authority.
• Sensitivity (1W/1m): 96 dB — efficiency rating indicating how loud the speaker will be per watt of input.
• Frequency Response: 80Hz–6KHz — mid-bass to upper-midrange range, essential for accurate reproduction of bass fundamentals and lower mids.
• Recommended High Pass Crossover: 100Hz — suggested lower boundary to protect the driver and optimize integration with other components.
• Voice Coil Diameter: 1.5" / 38.1mm — larger coil aids heat dissipation and power handling under high excursion.
• Voice Coil Former Material: Kapton — high-temperature stability for reliable performance.
• Winding Material: CCAW — conductive winding designed for durability and efficiency.
• Cone Material: Paper — traditional cone with predictable break-up and damping characteristics.
• : Paper
• Surround Material: Cloth
• Basket Material: Steel
• Magnet Material: Ferrite
• Weight: 20 oz
• Displacement Volume: 0.32L / 0.011ft3
• Vas: 2.79L / 0.098ft3
• Xmax: 9.4mm (one-way) — indicates how far the cone can travel for clean, linear excursion under power.
• Fs: 142Hz — low-frequency resonant point affecting in-car bass behavior and enclosure tuning.
• Qts: 0.39, Qes: 0.47, Qms: 2.09 — overall damping and system alignment indicators for enclosure design.
• Sd: 130.7 cm2 — effective cone area impacting bass output and efficiency.
• Re: 3.5 Ohms — DC resistance contributing to the overall electrical loading.
• Sold: Single — available as an individual unit for flexible configurations.
• Grill Included: No — requires separate grille if needed for protection and aesthetics.

In a real car build, the 6PRO300MB-4 serves as the dedicated mid-bass element in a two- or three-way setup, delivering confident bass fundamentals and crisp upper-mrequency detail. Its 4-ohm impedance and 96 dB sensitivity help you achieve loud, clean output without excessive amplifier power, while the 80 Hz–6 kHz range keeps mids articulate and punchy. The design choices—1.5" Kapton voice coil, CCAW windings, paper cone, and ferrite magnet—support reliable performance under typical dash or door installations, with a safe 100 Hz high-pass crossover to protect the coil and maintain clear midrange performance.