nexus
Super Member
i heard the AMT towers when they first came out. i spent 3 hours one afternoon listening to nearly every kind of music. afterward, knowing how much they cost then and realizing that my 60 watts per was not going to cut it, i left very depressed for weeks. i had wished they had the B139 oval woofer ESS used to employ in their speakers but the bass extension was still okay, down to about 32 hz..
depressed, i tried to duplicate the transmission line enclosure from a reveal of the inside of the cabinet but failed miserably. what i came to find out is you cannot use just any woofer that fits the hole to substitute for the original. t-lines are matched to the woofer and precisely designed.
looking at the photos of the woofer, i seem to recall that ESS used a woofer from the the first Heil speaker that had a cast frame that resembled the 1044 driver from their earlier speakers (non-heil). these look like stamped frames?
glad to see the OP wants to restore them. some of these legendary speaker wind up in landfills
depressed, i tried to duplicate the transmission line enclosure from a reveal of the inside of the cabinet but failed miserably. what i came to find out is you cannot use just any woofer that fits the hole to substitute for the original. t-lines are matched to the woofer and precisely designed.
looking at the photos of the woofer, i seem to recall that ESS used a woofer from the the first Heil speaker that had a cast frame that resembled the 1044 driver from their earlier speakers (non-heil). these look like stamped frames?
glad to see the OP wants to restore them. some of these legendary speaker wind up in landfills
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