Nakamichi NSW-P1204D4

Model No.: NSW-P1204D4

Nominal Diameter: 12" (312mm)

Mounting Depth: 5.75" (146mm)

N-Power: 400 watts

Peak Power: 2800 watts

Nominal Impedance: 4Ω+4Ω

Frequency Response: 31Hz-1.8kHz

Sensitivity (SPL/1W/1m): 86±3dB

Free Air Resonance (Fo): 35Hz

Suspension Compliance (Cms): 235.032UM/N

Moving Mass (Mms): 86.636g

Mechanical “Q” (Qms): 3.467

Electrical “Q” (Qes): 0.516

Total Speaker “Q” (Qts): 0.449

Equivalent Volume (Vas): 87.049

DC Resistance (Re): 4Ω+4Ω

Effective Piston Area (Sd): 52.1mm²

Force Factor (BL): 8.187T·m

Reference Efficiency (No): 0.716%

Voice Coil (V.C.): Φ50.5mm, ASV

Magnet Mass: 50.77oz (1439.4g)

Net Mass (1pc): Approx. 4.9kg

Recommended Sealed Enclosure Volume - 45-50 L

Recommended Vented Enclosure Volume - 55-60 L Port Tuning - 33-36hz