We're talking about the 69 reissue, right? I can look at mine tomorrow.
You're not telling me you want to brighten up that thing's sound, are you?!!! Unlike the fifties ones which low mid growlers, the 69 EB RI are "mothers of mud" in the same vein as the EB-0/-3 and EB-2 from that late sixties era are. Subwoof Godzillas!