Lowther PM4A with AER cones (Drive Units)

by Bert , Wednesday, January 10, 2007, 19:49 (6307 days ago) @ fu_man

Hi fu_man,

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.

These have a slightly lower Qts than the MD2 or MD3. The linear excursion is a bit lower too due to the shorter pole plate of the PM4A magnets.

The combination needs support under the magnet, the frame is too weak to hold the heavy magnet. Soundwise these have the same "signature" though.

Ciao,

Bert

--
BD-Design - Only the Best!

Tags:
0