These are Stirling Broadcast cabinets and I believe to be Stirling Broadcast crossovers with Morel MW142 drive units assembled by the LS3/5a legend Francis of Windsor who makes his own “handcrafted” tribute to the Ls3/5a.

The cabinets are exceptional constructed as you would expect.

Speakers shown (Kans) not included in sale but to show how the LS3/5as look on top

Adds a little depth on the bass side to the LS3/5a

With Stirlings proprietary driver the cost was £1600.