EighteenSound 21NTLW5000 18 Sound SUBWOOFER 540mm 21 "1800W AES VC135mm 97db 4 0hm NEODYMIUM

Description

Eighteen Sound 21NTLW5000

The Eighteen Sound 21NTLW5000 is a next generation ultra high performance subwoofer. The nominal diameter is 21 inches, and specifically foresees its use in very high SPL applications, in reflex, bandpass or horn configuration. For best results, the parent company recommends the use of amplifiers capable of delivering 4000 W program power without clipping.

Tetracoil technology ...

The Eighteen Sound 21NTLW5000 uses proprietary TTC (Tetracoil Double Voice Coil) technology, with two axially separated air gaps, in which two 4.5 "aluminum sandwich coils are wound on the same former and suspended uniformly in the two air gaps.

The advantages of the Tetracoil system are:

a flux density symmetrical with respect to the direction of movement of the loudspeaker;

a particularly symmetrical and flat inductance curve;

the equivalent diameter of the 4.5 "voice coil of a Tetracoil speaker is greater than 6". As a result, the heat dissipation occurs over a larger surface, managing to dissipate an electrical power of 1800 WattAES.

…and all the rest

The design features of the 21NTLW5000 include a large suspension system which, in combination with a glass fiber reinforced membrane, allows for ultra-linear piston action and provides complete mechanical control throughout the work area.

To further increase power management and reduce Power Compression, an air diffractor made of low density material is inserted into the rear hole of the pole plate, acting as a cooling system.

In addition, the Eighteen Sound 21NTLW5000 is able to operate correctly in adverse weather conditions. The unique cone treatment improves pulp resistance and gives water repellent properties on both sides of the membrane. In addition, the polar plate coating of the magnetic structure is much more resistant to the corrosive effects of salts and oxidation, compared to standard zinc coatings

Features of the 21NTLW5000

Brand 18Sound

Model 21NTLW5000

4 Ohm Code: 022218N500

Subwoofer type

Power (WAES) 1800

Nominal Impedance (Ohm) 8

Sensitivity (dBSPL 1W / 1m) 97

Diameter (mm / in) 530/21

Reel diameter (mm) 115

Weight (Kg) 12.50