PD-40 Midrange Horn from Pioneer CS-R700

Pioneer PD-40-4 (8Ω Matched Pair) RAW Frequency Response

Pioneer PD-40-3 (16Ω Matched Pair) RAW Frequency Response

Pioneer PD-40-4 (8Ω) Thiele & Small Parameters

Pioneer PD-40-3 (16Ω) Thiele & Small Parameters