I have a 10 inch bass tube I obtained from my neighbor at a garage sale and need plag for it. It is an older amp style tube with the white 14 plug connector. X-over and level turn knobs red led, 15 and 7.5 fuses. And the + and - connectors. Inside the number is a8d10c3020 on the static cage and a8d1005020 on the board / amplifier. Can anyone help with this plug.