Eighteen Sound 21NTLW5000 4 Ohm 21″ 1800W Loudspeaker

Eighteen Sound 21NTLW5000 4 Ohm 21″ 1800W Loudspeaker

General Specifications:

• Nominal Diameter 21”, 533 mm
• Rated Impedance 4Ω
• AES Power 1800 W (rms)
• Program Power 4000 W (rms)
• Peak Power 10000 W (rms)
• Sensitivity 97 dB
• Frequency Range 30 – 1800 Hz
• Power Compression @-10 dB 0.7 dB
• Power Compression @-3 dB 1.5 dB
• Power Compression @Full Power 2.2 dB
• Max Recomm. Frequency 150 Hz
• Recommended Enclosure Volume 4.24 ÷ 8.83 cuft, 120 ÷ 250 lt.
• Minimum Impedance 7.9 Ohm at 25°C
• Max Peak To Peak Excursion 2.75”, 70 mm
• Voice Coil Diameter 4.5”, 115 mm
• Voice Coil Technology split winding, 4 layers copper
• Suspension Triple Roll, Polycotton
• Cone Straight Ribbed Carbon Fiber Loaded Cellulose

Key Features:

• 97 dB SPL 1W / 1m average sensitivity
•  Dual 115mm (4,5 in) Tetracoil Aluminum Voice coil
•  4000 W program power handling
• Carbon fiber reinforced treated cellulose cone
• Water repellent cone and epoxy coated plate
• Ultra linear suspension behavior for excellent sound clarity
• Suitable for vented, horn loaded and bandpass speaker designs
• Low noise forced air cooling design
• Symmetric flux density and inductance behaviour

• Specifications
  Nominal Diameter	533 mm ( in)
  Nominal Impedance	4O
  Minimum Impedance	3.7 O
  Nominal Power Handling1	1800 W
  Continuous Power Handling2	4000 W
  Sensitivity3	97.0 dB
  Frequency Range	30 – 1800 Hz
  Voice Coil Diameter	115 mm (4.5 in)
  Winding Material	aluminum
  Design
  Surround Shape	Triple roll
  Cone Shape	Straight
  Woofer Cone Treatment	Water,UV repellent
  Recommended Enclosure	200.0 dm3 (7.06 ft3)
  Recommended Tuning	33 Hz
  Parameters
  Resonance Frequency	30 Hz
  Re	3.2 O
  Qes	0.33
  Qms	12.3
  Qts	0.32
  Vas	300.0 dm3 (10.59 ft3)
  Sd	1662.0 cm2 (257.61 in2)
  Xmax	17.5 mm
  Mms	372.0 g
  Bl	25.0 Txm
  Le	1.3 mH
  EBP	90 Hz
  21NTLW5000 Mounting and Shipping
  Overall Diameter	545 mm (21.46 in)
  Bolt Circle Diameter	520 mm (20.47 in)
  Baffle Cutout Diameter	492.0 mm (19.37 in)
  Depth	320 mm (12.6 in)
  Flange and Gasket Thickness	18 mm (0.71 in)
  Net Weight	12.5 kg (27.56 lb)
  Shipping Weight	13.5 kg (29.76 lb)
  Shipping Box	570x570x350 mm (22.44×22.44×13.78 in)

Why Choose Lean Business Audio?

50 years of experience of designing, building and supplying Home, Car and Professional Audio.

Huge stocks of leading loudspeakers and audio brands
KEF, Celestion, Eminence, WGS, Montage, BMS Speakers, Faital Pro, Eighteen Sound, Ciare

Low Worldwide shipping rates.
Free Delivery on selected brands with the UK.
Price matching.

For more information please contact us at: +44(0)1473 744089
Or Email us at: sales@lean-business.co.uk