I am using the Great Plains Altec 604 drivers in a large 11.5 cubic foot MLTL enclosure made by Serious Stereo. I agree with Onhwy61 that many of these speakers need a larger enclosure to sound their best. I am getting deep tight bass, very high resolution and an incredible wide open soundstage. There is a presence to the music that I find missing in most modern speakers. Overall I think vintage speakers can be as good or better than some of the best new technology speakers as long as they are implemented properly.
