18 Sound HD2020

Features

☑ Best performance to price 2" exit driver on the market
☑ 108 dB 1W / 1m average sensitivity
☑ 2 inch throat exit
☑ 2.4 inch edge-wound CCAW aluminum voice coil
☑ 140 W program power handling
☑ Pure Titanium diaphragm assembly
☑ Proprietary phase plug design
☑ HF copper sleeve for reduced distortion and increased output

The HD2020 2 inch exit high frequency compression driver has been designed for use in high quality audio systems. The titanium diaphragm is produced in-house and has been developed to assure unmatched transient response. A proprietary treated Nomex former with edge-wound copper-clad aluminum wire (CCAW) 60mm voice coil completes diaphragm assembly. It has been made by joining the proprietary-treated Nomex former directly to the titanium dome through its upper bend edge. In comparison with a usual straight former joint, the driver design assures extended frequency energy transfer for improved response linearity and unparalleled reliability. This feature maintains proper motion control of the dome in real working conditions. Due to its physical properties, the proprietary-treated Nomex former shows a 30% higher value of tensile elongation at working operative temperatures (200°C) when compared to Kapton. Moreover, this material is suitable to work also in higher moisture-content environments. Equipped with Proprietary Phase Plug 3P architecture, the HD2020 has been designed to give a smooth coherent wave front at the horn entrance in all working frequency ranges with a high level manufacturing consistency. The phase plug with its short openings and high flare rate, assures low distortion with excellent mid-high frequency reproduction. The HD2020 powerful ceramic magnet assembly has been designed to obtain 16 kGauss in the gap within a compact ferrite motor structure. The motor structure is equipped with copper ring on the pole piece, reducing inductance effect and distortion.