Julian, others ...
West Mountain Radio has the "COMspkr" back in stock.
I ordered a set at the Visalia DX Convention and they
were promptly shipped when the folks returned home.
They work well and I have no interference from 1KW on
HF and 600W on 6m within ten inches of the unit(s).
73! Ken Kopp - K0PP
ElecraftCovers at rfwave.net