Transducer LF ferita 21LW2500

Transducer LF ferita 21LW2500
3088.04 Lei
*pretul include TVA
La comanda
18 Sound
cod produs: 21LW2500
Descrierea Produsului

Key Features

  • 95 dB SPL 1W / 1m average sensitivity
  • 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
  • 3200 Watt program power handling
  • Composite reinforced straight ribbed cone
  • Optimized high grade ferrite magnet assembly
  • Recommended for subwoofer usage in compact vented or bandpass enclosures


The 21LW2500 is a 21" (533 mm) extended low frequency loudspeaker, designed for use in vented or bandpass enclosure. The loudspeaker is designed to withstand high power levels without damage while providing clean and undistorted LF reproduction at a very high SPL. For optimum results we recommend amplifiers able to deliver 3600 Watt program power. The 21LW2500 features a unique motor featuring a high grade ferrit magnet assembly in a structure optimized for thermal and magnetic efficiency. 21LW2500 features include a large displacement suspension system which, in conjunction with a composite reinforced, straight ribbed cone and the Eighteen Sound proprietary Double Silicon Spider (DSS) technology, allows an ultra-linear piston action and provides full mechanical control across the entire working range. The 100mm (4 in) state-of-the-art voice-coil utilizing Interleaved Sandwich Voice coil (ISV) technology, provides high levels of thermal stability and durability. The ISV technology achieves a balanced linear motor unit exerting an exceptionally high force factor.

General Specifications

Nominal Diameter 533 mm (21 in)
Rated Impedance 8 Ohm
AES Power 1600 W
Program Power 3200 W
Peak Power 7200 W
Sensitivity 95 dB
Frequency Range 30-1000Hz
Power Compression @-10dB TBD
Power Compression @-3dB TBD
Power Compression @Full Power TBD
Max Recomm. Frequency 200 Hz
Recomm. Enclosure Volume 130 - 500 lt (4.59-17.7 cuft)
Minimum Impedance 6,1 Ohm @ 25°
Max Peak To Peak Excursion 70 mm (2,76 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil Winding Material Copper wire
Suspension Triple roll, Heavy Polycotton
Cone Curved ribbed fiber loaded cellulose

Thiele Small Parameters

Fs 30 Hz
Re 4,8 Ohm
Sd 0,166 sq.m (175,15
Qms 9,35
Qes 0,37
Qts 0,35
Vas 290 lt. (10,24 cu.ft)
Mms 368 gr. (0,80 lb)
BL 30,5 Tm
Linear Mathematical Xmax ±14,5 mm (±0,57 in)
Le (1kHz) 2,58 mH
Ref. Efficiency 1W@1m (half space) 95,4 dB   

Mounting information

Overall diameter 545 mm (21,46 in)
N. of mounting holes and bolt 8
Mounting holes diameter 8,5 mm (0,33 in)
Bolt circle diameter 520 mm (20,47 in)
Front mount baffle cutout ø 492 mm (19,37 in)
Rear mount baffle cutout ø 490 mm (19,29 in)
Total depth 252 mm (9,92 in)
Flange and gasket thickness 18 mm (0,7 in)
Net weight 17,9 kg (39,4 lb)
Shipping weight 19,4 kg (42,7 lb)
CardBoard Packaging dimensions 570x570x290 mm (22,4x22,4x11,4 in)


21LW2500   8 Ohm
Specificatiile Produsului
  • Dimensiune Difuzor 21"
  • Echipamente Sunet Difuzoare
  • Impedanta 8 ohm
  • Putere RMS > 1000 w
  • Tehnologie Ferita
  • Tip difuzor LF Bass - Joase
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