Stacked Quad ESL 57

[JoeE SP9]

Hi there, I am new to this forum scenario but here goes. I have a pair of 57's and 63's does any body know if it is possible to stack them or am I being daft.

Hi, Trevor
Stacking is normally done with 2 pair of the same speakers. I suppose it could be done with ESL 63's on the bottom and the ESL 57's on the top.