Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: 50/40 Altec 604 Duplex Boxes
Post Subject: 604E and Paper DiaphragmsPosted by IronManIV on: 4/9/2025
Thank you for this motivation about the 604E and your experience with the bass in a big box. I am an idiot, so I have read Neville’s work on vented bass several times and I am still wondering whether I really understand it. At first glance I think the resonance of the port can move Cabinet resonance and response, and then it doesn’t. Then I think, okay the box volume moves things more powerfully. Then I think that the Q of the driver makes the most difference. I mean if it is .3, well trying to leverage resonance may not make a difference. Obscure reference, but Vance Dickason said with low Q woofers increasing SEALED box size will actually raise resonant peak of combined box and driver. All to say, for this particular driver, your encouragement to try a very large vented box seems to be something important. Like either, I’m an idiot for not noticing it is obviously true, or it is a key to unlock a more subtle understanding and I might not stay an idiot forever.
FWIW. It appears that paper diaphragms from Alex in Russia on EBay are still available on EBay. I have very much enjoyed them in the 808 and you might enjoy trying them in your 604E. I think they are beautifully made and I really love them as creations. I think they might have something special in sound, but I really am an idiot, so try them for the pleasure of the beautifully crafted object.
Cheers,
JamieRerurn to Romy the Cat's Site