What I used hear from the experienced is that the cabinet is very important in Tannoy but not crucial in Altec.
And bigger cabinet, better base for altec.

I am using 604Bs in 614 cabinets. I think I was kind of lucky to meet these original set. I didn't need to do anything with the speakers except removing the ugly blank paint which was smeared thick on the cabinet. I am generally satisfied with the sound. They have wonderful vocal and the piano from them is astounding.

I am enjoying music almost day and night and I feel my tast in music has changed and developed in various ways a lot with Altec.

Now I am thinking to try 612 cabinets which are basically same design but bigger size. Original 612 cabinets are very rare and expensive. It will cost around 1000 bucks. It can easily go up to 1500 bucks. But new cabinets which are made by local professional will cost around 500 to 600 bucks(used one).

Is it worth to go for original?