18 Sound 21NLW9601 - Subwoofer 21” 8 Ohm - 1800W AES - 98dB@1W/1mt

21” Extended LF Neodymium Driver - 5.3” vc - 1800W AES - 98dB@1W/1mt - ISV - TSS - SDR

Manual

General

• Product type Cone driver
• Brand Eighteen Sound
• Reference 21NLW9601
• Product code ALT219601WF08NA - 022218N010

Informations

• Nominal impedance 8 ohm
• Dimensional category 21 inch
• Frequency coverage type Sub, Low
• Manufacturer sensitivity 96 dB
• Calculated sensitivity 96.41 dB
• Nominal power handling 1800 W
• Max power handling 3600 W
• Bandwidth 25÷2000 Hz

Fundamental parameters

• Sd 1662 cm²
• Mms 408 gr
• Cms 46 µm/N
• Le 3.1 mH
• Re 5.9 ohm
• BL 43 T.m

Small signal parameters

• Fs 37 Hz
• Qes 0.31
• Qms 5.5
• Qts 0.29
• Vas 175 L
• Datas
• Xmax ±14 mm
• EBP 119 Hz
• Zmin 7.9 ohm
• Fs / Qts 128 Hz
• Vas * Qts² 14.72 L
• Calculated efficiency 2.75 %
• Weight ~14 kg
• Demodulation ring Yes

Dimensions

• Voice coil diameter 5.3" inch
• Outside diameter 545 mm
• Baffle cutout diameter 492 mm
• Depth 250 mm
• Front thickness 18 mm
• Depth after front 232 mm
• Diamètre aimant (mm) 170 mm
• Shape & Materials
• Front chape Cylindrical
• Magnet type Neodymium
• Basket masterial Aluminium