DOWN4SOUND | HEXICONE XMR 65 | 6.5″ CARBON FIBER PRO AUDIO SPEAKER | 200W RMS | 4 OHM

The DOWN4SOUND HEXICONE XMR 65-4 is a high-performance 6.5-inch Carbon Fiber Pro Audio Speaker engineered for powerful vocals, strong midrange response, and extended upper-frequency performance. Featuring Down4Sound’s signature Hexicone carbon fiber cone technology, the XMR 65-4 combines lightweight construction, excellent rigidity, and a phase-plug design for clear, responsive, and authoritative output.
What Makes the XMR Different?
Both versions deliver the powerful output and carbon fiber Hexicone performance expected from Down4Sound, but each is designed for a different type of system.

Original HEXICONE: Features a traditional dust-cap design and is ideal for customers seeking the familiar HEXICONE sound with bold vocals and strong midrange performance.
HEXICONE XMR: Replaces the traditional dust cap with a phase plug, providing additional upper-frequency reach and a more open vocal presentation. The XMR does not replace the original HEXICONE. It gives builders another option for tailoring their system based on the sound and frequency coverage they want.

Built for high-output daily drivers, custom door builds, competition-inspired systems, and dedicated pro audio applications, the HEXICONE XMR 65-4 delivers the projection, clarity, and authority needed to bring your system to life.
Key Features

XMR Phase-Plug Design: Provides additional upper-frequency reach and a more open vocal presentation than the traditional dust-cap configuration.
Extended Usable Frequency Range: Designed for builders seeking greater upper-frequency coverage while maintaining strong midrange performance.
Carbon Fiber Hexicone Technology: Lightweight and rigid cone construction improves responsiveness, efficiency, and overall sound quality.
Powerful Vocal Projection: Delivers clear, authoritative vocals that remain present at high output levels.
Strong Midrange Response: Produces the clarity and authority demanded by high-output door builds and pro audio systems.
Enhanced Cone Rigidity: Carbon fiber Hexicone construction helps reduce unwanted cone movement and distortion at higher output levels.
Efficient Ferrite Motor Structure: Provides dependable power handling and consistent performance under demanding conditions.
Versatile Applications: Ideal for cars, trucks, SUVs, motorcycles, powersports vehicles, custom door panels, and dedicated pro audio systems.

Specifications

Speaker Size: 6.5 Inch
RMS Power: 200W RMS
Impedance: 4 Ohm
Magnet Type: Ferrite
Sensitivity: 93 dB (1W/1M)
Mounting Depth: 3 Inch
Cutout Diameter: 5.73 Inch
Overall Diameter: 6.625 Inch

Technical Parameters

Re: 3.73 Ohm (Electrical voice coil resistance)
Le: 0.082 mH (Frequency-independent voice coil inductance)
L2: 0.488 mH (Para-inductance of voice coil)
R2: 2.37 Ohm (Electrical resistance due to eddy current losses)
Cmes: 260.47 F (Capacitance representing moving mass)
Lces: 15.88 mH (Inductance representing driver compliance)
Res: 58.04 Ohm (Mechanical loss resistance)
Fs: 78.3 Hz (Driver resonance frequency)
Mms: 11.560 g (Mechanical mass of diaphragm assembly)
Mmd: 9.832 g (Mass of voice coil and diaphragm without air load)
Rms: 0.765 kg/s (Mechanical resistance of driver losses)
Cms: 0.358 mm/N (Compliance of driver suspension)
Kms: 2.79 N/mm (Stiffness of driver suspension)
BL: 6.662 N/A (Force factor)
Qtp: 0.451 (Total Q-factor considering all losses)
Qms: 7.432 (Mechanical Q-factor)
Qes: 0.478 (Electrical Q-factor)
Qts: 0.449 (Total Q-factor)

Why Choose the DOWN4SOUND HEXICONE XMR 65-4?
Choose the XMR 65-4 when you want the strength, output, and vocal authority of the HEXICONE platform combined with a phase-plug design and additional upper-frequency coverage. Its 4-ohm configuration works with a wide range of car audio amplifiers and system designs, while its lightweight carbon fiber cone, efficient ferrite motor, and high-output construction make it an excellent choice for loud, clear, and responsive pro audi