Pair (2) of 18 Sound ND1TP 1” Titanium/PEN Diaphragm Compression Drivers - NICE!

Description

You are buying on a nearly new pair (2) 18 Sound ND1TP 1” 8 Ohm neodymium motor compression drivers with a titanium/PEN diaphragm.
Nearly new mean’s these drivers have been tested with an analyzer and the SPL, impedance and distortion measured, so new compression drivers with basic incoming quality control performed.
These look new with some minor handling marks (these were engineering samples, which is why the price is so LOW!).
Internet price for these compression drivers is 5 each (0/pair).
These will ship in the factory cartons.
From 18 Sound (visit the 18 Sound site for more info):
The ND1TP is a 1 inch exit neodymium high frequency compression driver specifically designed for high quality applications. Equipped with proprietary phase plug architecture, the ND1TP has been developed to give high level
manufacturing consistency and smooth coherent wavefront at horn entrance over all the working frequency range. This phase plug design, with its short openings and high flare rate value assures low distortion and remarkable
improvements in mid-high frequency reproduction. With its Pen suspension, the titanium diaphragm assembly exhibits constant slope response from 1kHz to 18kHz with uniform smooth roll-off behavior. An edge-wound aluminum voice coil, wounded on proprietary treated Nomex, completes diaphragm assembly. Thanks to its physical properties, the proprietary treated Nomex former shows 30% higher value of tensile elongation at working operative temperature (200°C) when compared to Kapton. A copper ring on the pole piece reduces inductance above 10 kHz improving phase and impedance linearization. The ability to perform properly under inclement weather conditions is a key-point of the Eighteen Sound philosophy. A special treatment is applied to the magnet and the top and back plates of the magnetic structure making the ND1TP driver more resistant to the corrosive effects of salts and oxidization than any other treatment used by any other manufacturer.
Features:
Neodymium magnet
Edgewound CCAW Voice Coil
Copper ring
110dB Sensitivity
Titanium - PEN diaphragm
Super compact design
Buyer to pay .95 2-day USPS Priority Mail fixed shipping cost, with insurance and delivery confirmation (no charge for packaging) to any U.S. address, all others exact charges.
Check out my other auctions for musical instruments and loudspeakers.
ONLY US and Canada bids on this auction please- NO EXCEPTIONS.
Sold as is…All sales final (no return).
Thanks for looking!