Down4Sound D4S-NMR654 6.5" Neo Midrange Speaker – 4Ω (110W RMS)

The Down4Sound D4S-NMR654 is a lightweight, high-efficiency 6.5" midrange built for serious output and clarity. Designed for pro audio and high-performance car systems, this driver uses a Neodymium motor to deliver extreme loudness, crystal-clear vocals, and unmatched transient response — all in a compact, low-weight design.

With 110W RMS handling and 100 dB sensitivity, it delivers incredible projection with minimal power. Whether you’re building a competition setup, stage system, or daily driver, the NMR654 ensures your mids stay clean, detailed, and dynamic.

Key Features:

• 6.5” high-output Neo midrange for pro and car audio use

• Powerful Neodymium magnet for lightweight efficiency

• 100 dB sensitivity for extreme loudness and accuracy

• 110W RMS power handling for clean, controlled mids

• Smooth frequency response from 150 Hz – 10 kHz

• Lightweight, compact design ideal for tight installs

• Perfect for vocals and midbass clarity

Specifications:

• Size: 6.5” (165 mm)

• RMS Power: 110W

• Sensitivity: 100 dB (1W/1m)

• Frequency Range: 150 Hz – 10 kHz

• Impedance: 4Ω

• Magnet Type: Neodymium

• Mounting Depth: 2.2” (56 mm)

• Cutout Diameter: 5.67” (144 mm)

• Bolt Circle Diameter: 6.18” (157 mm)

• Net Weight: 2.27 lb (1.03 kg)

Thiele/Small Parameters:

• Fs: 131 Hz

• Qms: 7.8

• Qes: 0.63

• Qts: 0.59

• Vas: 3.8 L

• Cms: 132 µM/N

• BL: 7.2 N/A

• Sd: 14.3 cm²

• Xmax: 2.5 mm

Precision Engineering:
The D4S-NMR654 4Ω delivers stunning output in a compact frame. Its Neodymium magnet boosts sensitivity while reducing weight, and the optimized suspension and cone design ensure detailed reproduction across the midrange.

Summary:
Lightweight, efficient, and incredibly clear — the D4S-NMR654 4Ω is the perfect Neo midrange for pro audio and competition setups where every decibel and detail matter.