18 Sound 8NTLS2000 LF Driver

The 8NTLS2000 is a cutting-edge 8-inch low-frequency driver from 18 Sound, designed for premium sound reinforcement systems demanding tight, accurate bass and clean midrange reproduction. Leveraging advanced Tetracoil technology and a precision-engineered motor structure, this driver delivers exceptional power handling, linearity, and thermal performance — making it an outstanding choice for modern line array modules and two-way enclosures.

Superior Tetracoil Technology

At the core of the 8NTLS2000 is 18 Sound’s exclusive Tetracoil dual-gap motor. This innovative design uses a four-layer, double-gap voice coil assembly that drastically improves thermal conductivity and optimizes BL symmetry. The result is reduced power compression, exceptional control at high excursions, and a remarkably balanced force factor that ensures the driver operates with maximum precision, even under heavy load. This technology directly contributes to the lowest intermodulation distortion in its class.

High Power, Low Distortion Performance

The 8NTLS2000 boasts an AES power handling of 350 W, with a continuous program rating of 700 W. This muscle allows it to effortlessly drive tight, punchy bass and authoritative midrange without distortion or dynamic loss. A sensitivity of 93.5 dB (1W/1m) ensures that the driver achieves substantial output levels, maximizing system efficiency and minimizing amplifier strain.

Its frequency range spans 45 Hz to 1200 Hz, perfectly suited for deployment as a dedicated woofer or as a midbass element in a high-performance two-way system. The curvilinear cone and single-roll rubber surround ensure accurate piston movement, helping maintain clean transient response and minimizing breakup modes across the operating band.

Optimized Mechanical Design

Engineered for both reliability and lightweight installation, the 8NTLS2000 features a robust 51 mm (2.0 in) aluminum voice coil wound to 19 mm depth, paired with a precise 8.5 mm magnetic gap. This configuration delivers outstanding excursion capabilities, supported by an Xmax of 7.4 mm and a maximum mechanical displacement (Xvar) of 8.0 mm, providing exceptional headroom before distortion sets in.

The cone is constructed with weather-protected materials, maintaining performance and structural integrity even under challenging environmental conditions. The driver’s suspension has been fine-tuned to deliver maximum linearity, reducing unwanted harmonics and ensuring fidelity across its range.

Lightweight Neodymium Motor

At just 1.5 kg (3.31 lb) net weight, the 8NTLS2000 utilizes a powerful neodymium magnet structure, significantly reducing overall mass without compromising magnetic strength or efficiency. This makes it particularly well-suited for touring line arrays and portable PA systems where weight savings translate into faster setups and reduced rigging stress.

Smart System Integration

The 8NTLS2000 is optimized for enclosure volumes around 12.0 liters (0.42 ft³), with recommended tuning at 45 Hz. Its Thiele-Small parameters — including Qts of 0.19, Vas of 27.5 liters, and a relatively low Le of 0.69 mH — make it straightforward to design into compact bass-reflex or hybrid horn systems, enabling designers to achieve both deep low-frequency extension and tight, controlled punch.

Technical Specifications

• Nominal Impedance: 8/16 Ω (minimum 5.9 Ω)

• Sensitivity: 93.5 dB

• Frequency Response: 45 Hz – 1200 Hz

• Voice Coil Diameter: 51 mm (2 in)

• Power Handling: 350 W AES, 700 W continuous

• Weight: 1.5 kg

• Magnet: Neodymium

• Cone / Surround: Curvilinear with single-roll rubber

• Recommended Tuning: 45 Hz

Conclusion

With unmatched balance between power, clarity, and weight, the 8NTLS2000 stands out as the driver of choice for designers building state-of-the-art line arrays, portable systems, or high-output two-way loudspeakers. Its advanced motor technology and meticulous engineering ensure that it reproduces program material with stunning fidelity, whether it’s handling the punch of kick drums or the nuance of complex vocal passages.

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About 18 Sound

18 Sound products are proudly made in Reggio Emilia, Italy, combining advanced technology with Italian craftsmanship. Known for their high-performance professional audio components, 18 Sound is a trusted name in the global audio industry. Their state-of-the-art manufacturing and strict quality control ensure exceptional reliability and sound clarity. 18 Sound products are designed to meet the demands of speaker builders and audio professionals, 18 Sound offers premium products with outstanding value and performance worldwide.