Quote Originally Posted by charly1944 View Post
Hello,
Yesterday night i woke up at 4.15 in the morning (Paris time) for something exciting: I finally won the auction for a pair of 604 D .The speakers will be soon on their way to GPA to be restored . From what i read here from Cradeldorf as well as (indirectly ) from Ken Shindo the original paper cones together with paper surround used in the C and early D models sound smoother than the late D and E models with the accordeon type model . If i am lucky,GPA will have a pair of those left.If not i will go anyway with their new cone with accordeon surround.
I noticed that about 5 mm of front of the mouth of the hi freq horns were filed down.I dont know for what reason that was done and wether it has an impact on the sound . Anybody aware of this kind of practices?
If you were in my situation (listening to classical music and jazz in a rather small room and more interested in the subtelty of the music than in deep bass or high power handling)what would you ask Bill to concentrate on for optimal restoration ? GM,Jeff,does it help to ask GPA to measure the specs of the restored speakers for optimal cabinets building and crossover design.
Hopefully if the cones look fine Bill won't replace them, Just remag them,you'll be happier if he doesn't, Original cones are much nicer for resale If it ever comes to that. Last I heard original cones were gone long ago. Not sure what you mean by filed down? Both of my horns have file marks in them, My guess is it was to remove casting lines in the plastic to smooth them out. There is a pair of E's on Ebay that somebody hacked the center of the horns out to make them kinda like a manta ray...bad Idea if you ask me. I hope that's not what your talking about. Good luck on them My guess is your gonna be crazy happy when you get them and hear them for the first time.