Car audio modified speaker 4 inch woofer 4 ohm 70W full frequency heavy medium bass car speaker modified speaker PZ F4001 1 PCS|Coaxial speakers| - AliExpress
Audison Prima AP 6.5 2 ohm 6.5" 17cm Car Midbass Dash Door Speakers 70w RMS
Celestion 50W 8 ohm VT-Junior Speaker - Andertons Music Co.