Driver 21inch 2000W 4/8Ω Neodymium 18 Sound 21NTLW5000

Name: Driver 21inch 2000W 4/8Ω Neodymium 18 Sound 21NTLW5000
Brand: 18 Sound
SKU: HBK47897
Availability: InStock
Rating: 4.67 (3 reviews)

21NTLW5000 Driver 21inch Neodymium 2000W 4/8Ω 18 Sound - Call price

Product code: 21NTLW5000 4 OHM 805,351

4.67/5 in 3 times

Price only applicable for overseas
Technical Support
Term of shipment: Ex-Works
Pick up at Hoang Bao Khoa LTD company
All shipping costs and risks, including export/import procedures, duty and others are on buyer’s account (Incoterm 2020)

Features

Made in Italy

97 dB SPL 1W / 1m average sensitivity

Dual 115mm (4,5 in) Tetracoil Aluminum Voice coil

4000 W program power handling

Ultra linear suspension behavior for excellent sound clarity

Symmetric flux density and inductance behaviour

Low noise forced air cooling design

Water repellent cone and epoxy coated plates

Suitable for vented, horn loaded and bandpass applications

The 21NTLW5000 is a 21 inch diameter next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration. For optimum results we recommend the usage of power amplifiers able to deliver 4000W program power without clipping. The 21NTLW5000 uses Eighteen Sound proprietary Tetracoil technology, where two different, axially separated magnetic gaps and two inside-outside 4.5" diameter aluminum voice coils are wound on the same former and suspended evenly in the two magnetic gaps.

Official Distributor Certificate

Eighteen Sound distributor certificate

The Tetracoil design key advantages are:
1) a symmetric flux density versus displacement behavior, that minimizes the even distortion products;
2) a very symmetric and flat inductance curve;
3) the equivalent voice coil diameter of a 4.6" Tetracoil speaker is greater than 6". Consequently heat dissipation occurs over a larger surface area, driving AES power handling up to 1800 W.
21NTLW5000 design features include a large displacement suspension system which, in conjunction with a fiberglass reinforced, straight ribbed cone allows an ultra-linear piston action and provides full mechanical control across the entire working range.
In order to furtherly increase power handling and reduce power compression figure, a low density material air diffractor is placed into the backplate venting hole acting as a cooling system, increasing power handling capability and lowering the power compression figure.
21NTLW5000 is able to perform properly under inclement weather conditions: the exclusive cone treatment improves pulp strength and gives water repellent properties to both sides of the membrane. In addition, magnetic structure metal plates coating is far more resistant than standard zinc coating to the corrosive effects of salts and oxidization.

Driver diagram

Driver chart

Specifications

1. 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.

2. Power on Continuous Program is defined as 3 dB greater than the Nominal rating.

3. Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.

4. Hight- pass filter 12 dB/oct

Does the company offer free shipping?

Free shipping for local order over $22. Oversea buyers will pay for shipping cost under Ex-work term.

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Which brand does 21NTLW5000 4 OHM belongs to?

21NTLW5000 4 OHM belongs to 18 Sound. Eighteen Sound is a leading designer and manufacturer of high quality professional audio loudspeakers, developing state-of-the-art transducer technologies and using the most advanced production techniques, located in Reggio Emilia, Italy.