ALD68 and ALDH68 Replacement Diaphragm (1) from $9.99 $24.95 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. This 8-ohm, 2.5" voice coil replacement diaphragm specifically fits the Audio Legion ALD68 driver and ALDH68 horn driver.