The horn used in Tesco's mid-range speaker system PS-2000H. There are 3 screws for attaching the driver. Altec 2" and JBL 1" drivers did not fit. Specifications and details are unknown. There are scratches, stains, and dullness overall (Oikawa Tetsuji)
Key Specifications: Mounting Screws - Screw Position 87mm W655 x H232 x D480 mm 7.6 kg