Ciare PTS440 Tweeter 15" speakers 443 mm/N ***Xmax=(Voice coil winding

443 mm/N ***Xmax=(Voice coil winding depth-Magnetic Gap depth)/2+ Magnetic Gap Depth/4

Xmax: 24 mm

and reach out before purchase if you want help making sure DS18 PRO-TW3

Bass Boost: 0 – 9dB @ 45Hz

5 oz Mounting Depth: 2

Ciare PTS440 Tweeter 15" speakers 443 mm/N ***Xmax=(Voice coil windingThis is the newest addition to the Ciare high performance lineup, the PST440. This tweeter offers ultra wide dispersion and a frequency response of 2400 Hz to 20,000 Hz. As you can see from the horizontal directivity chart, it offers almost 180 of dispersion all the way up to 7000 Hz . It is also extremely capable of high output with 106 DB sensitivity and 250 W power handling .