I have recently purchased a pair of Altec Model 19s (made in 1978). I am surprised by the sophistication of the crossover. The speakers sound great too. They are a bit thin in the high frequencies, but I am trying to figure out a way to correct for that. One possible way is to add supertweeters. Another might be to change the HF driver (one suggestion has been to switch the existing HF drivers for BMS 4552s + an L-pad (the BMS drivers are a bit more efficient).
Another possibility would be to add a Behringer DEQ2496 to the mix. If you were able to do both the HF driver change AND the Behringer, you'd spend less than $3k (plus a bit of time spent (the BMS drivers+L-pad should be quite easy, the Behringer probably has a learning curve)). I don't know the US market price for Altec 19s but I expect them to be in the $1k-$2k range.
Another possibility would be to add a Behringer DEQ2496 to the mix. If you were able to do both the HF driver change AND the Behringer, you'd spend less than $3k (plus a bit of time spent (the BMS drivers+L-pad should be quite easy, the Behringer probably has a learning curve)). I don't know the US market price for Altec 19s but I expect them to be in the $1k-$2k range.