18 Sound 12ND830 - Woofer 12” Neodymium Driver - 450W AES - 99dB@1W/1mt | 4 ohm

12” LF Neodymium Driver - 3” vc - 500W AES - 98dB@1W/1mt - ISV - SDR

Manual 

Informations

• Nominal impedance 4 ohm
• Dimensional category 12.5 inch
• Frequency coverage type Low, Midbass, Midrange
• Manufacturer sensitivity 99 dB
• Calculated sensitivity 98.76 dB
• Nominal power handling 450 W
• Max power handling 700 W
• Bandwidth 53÷5000 Hz

Fundamental parameters

• Sd 531 cm²
• Mms 47 gr
• Cms 162 µm/N
• Le 0.96 mH
• Re 2.8 ohm
• BL 13.7 T.m

Small signal parameters

• Fs 58 Hz
• Qes 0.25
• Qms 6.48
• Qts 0.24
• Vas 63 L

Datas

• Xmax ±6.5 mm
• EBP 232 Hz
• Zmin 3.8 ohm
• Fs / Qts 242 Hz
• Vas * Qts² 3.63 L
• Calculated efficiency 4.73 %
• Weight ~4 kg

Dimensions

• Voice coil diameter 3 inch
• Outside diameter 315 mm
• Baffle cutout diameter 282 mm
• Depth 140 mm
• Front thickness 9 mm
• Depth after front 131 mm