Test Bench: Wavecor TW030TU03 30mm Graphene-Coated Soft Dome Tweeter

This latest Wavecor soft dome tweeter is specifically intended for car audio applications. Like other models, the new 4Ω TW030TU03 includes a 30mm wide surround with a precision-coated graphene-reinforced cloth diaphragm optimized for high-frequency cutoff above 20kHz. The design also features internal chambers below the dome and surround edge, dual neodymium magnets vented into a damped rear chamber, copper-clad aluminum voice coil winding with a vented voice coil former, and flexible lead wires.

This article focuses on another pro sound OEM new to Voice Coil’s Test Bench, Oberton of Bulgaria. For this characterization, Oberton supplied the recently released ND72CT/HB 1.4" compression driver along with the H-1464 1.4” cast aluminum 60° × 40° constant directivity horn. The ND72 has two iterations available - a cotton composite diaphragm with polycotton surround - The ND72CT - and an alternative dome, named the Hybrid Dome, using a combination of carbon composite diaphragm with a center cotton composite “patch” that reduces break-up modes - the ND72HB. This article was originally published in Voice Coil, January 2020.

This month’s Test Bench driver is the T35C002 1.5” tweeter from Norwegian high-end home audio manufacturer SEAS’s home audio driver Excel line. The T35C002 is basically an Excel line version of the company’s Exotic line T35 Alnico V tweeter, but it uses a neodymium magnet, with a 1.5” coated cloth diaphragm sourced from German high-end diaphragm manufacturer Dr. Kurt Muller (DKM). This article was originally published in Voice Coil, April 2014.