I'm a little puzzled... could you post a pic of the metled horn? Are these KG 3.2 speakers? They weren't introduced until 1992, but it's close enough to 20 years for me.
And welcome to the forum, btw.
Silence will save me from being wrong (and foolish), but it will also deprive me of the possibility of being right.
- Igor Stravinsky
'86 LaScalas (LS-BLS w/s) w/BEC tweeters and DHA2 crossovers, '89 Heresy IIs, '72 JBL 4311s, JMA Merlin Pre, Blueberry Xtreme Pre, Welborne Labs 2A3 Moondogs, Former Dynaco ST-70, H/K 430 x 2