The D4S-NMR804 is a professional-grade 8″ midrange speaker designed for high-output systems that demand precision and volume. With its lightweight neodymium motor and high-sensitivity design, this driver delivers tight, aggressive mids with clean response across the vocal range — without adding unnecessary weight to your build.
Specifications
- Nominal Diameter: 8 in (210 mm)
- Power Handling (RMS): 120W
- Sensitivity (1W/1m): 100 dB
- Frequency Response: 200 Hz – 15 kHz
- Impedance: 4 Ohm
Mounting Information
- Overall Diameter: 8 in (210 mm)
- Baffle Cutout Diameter: 6.54 in (166 mm)
- Bolt Circle Diameter: 7.8 in (198 mm)
- Mounting Depth: 3.07 in (78 mm)
- Net Weight: ~2.6 lbs (1.2 kg)
Thiele/Small Parameters
- Resonant Frequency (Fs): 142 Hz
- Qms (Mechanical): 8.8
- Qes (Electrical): 0.72
- Qts (Total): 0.67
- Vas: 9.1 L
- Cms: 131 µM/N
- BL: 9.3 N/A
- Sd: 21.6 cm²
- Xmax: 2.5 mm
