Lowther PM4A with AER cones (Drive Units)

by fu_man @, Wednesday, January 10, 2007, 08:20 (6287 days ago)

Can anyone give an opinion on Lowther PM4A Alnico drive units with upgraded AER cones, compared to say AER MD2 or 3's. There are some on audiogon - used in an Oris 150 horn with Berts phase plugs.

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