mungkiman Posted June 30, 2002 Share Posted June 30, 2002 I currently have K-33-P's in my La Scalas. Type K-447, black with woofer access on TOP of doghouse. The serial numbers are 1L885 and 1L886, and they have silver pie slice logos. I was told they were built in the 70's. I have read on the forum that the P's are an alnico version, and the E's are an upgrade. What are the differences? Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted June 30, 2002 Share Posted June 30, 2002 year of manufacture, 1973. K-33E was Eminence woofer with mud magnet. Part of the reason for changeover to mud (ferro/ceramic slurry) magnets was difficulty in obtaining cobalt for alnico magnets...especially once the fighting in the Belgian Congo (Zaire), our main source, and apartheid in South Africa, where it was processed and shipped from, entered the U.S. foreign policy realm on banning of imports in the early 1970's. Eminence had also produced the previous woofer for a time...and improvements were made for the K-33E over the K-33P ------------------ I can now receive private messages Quote Link to comment Share on other sites More sharing options...
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