I recently picked up a pair of Altec 605a in Barzilay cabinets. I bought it to keep the beautiful cabinets and replace the 605a with my 604e and newly built crossovers. When I took out the 605a, I noticed the crossovers were definitely not original although they seemed to work fine. Any one have an idea on which crossovers these are? In case you are wondering, I am going to be selling the 605a with these crossovers soon along with some open baffles.
Also, I've read a ton about how the 605a are far less superior than the 604e. However, from my listening to both speakers, I was quite impressed with how the 605's sounded. Very relaxed and natural and pretty darn good in my opinion. But I do have to say my 604es with custom Jeff Markwart crossovers are definitely a real step up. Vocals and instruments are oh so smooth and I can listen to them all day long.