Test Bench: Oberton ND72CT/HB 1.4” Compression Driver

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.