OK, well, here's a couple of direct questions I've asked you so far in this thread:
1] Didn't JBL move away from that ("West Coast sound") soon after 1974, concentrating instead on accurate reproduction?
2] What does this (linked post below) have to do with your original topic, East coast/West coast (another topic discussed in many previous threads)?
http://www.audioheritage.org/vbulletin/showpost.php?p=280227&postcount=13
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