Let's see...
Quarter round in the corners - popular in the late 70's, early 80's. Just about the time the drone cone was at the peak of it's popularity too. Back then it was the system that was known as passive radiator. Comprised of an active cone and a drone cone in nice compact box it had a nice warm kind of bass.
Methinks you're right.
What is the driver in the 3rd pic?
Quarter round in the corners - popular in the late 70's, early 80's. Just about the time the drone cone was at the peak of it's popularity too. Back then it was the system that was known as passive radiator. Comprised of an active cone and a drone cone in nice compact box it had a nice warm kind of bass.
Methinks you're right.
What is the driver in the 3rd pic?
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