Saw these on feepay.

What effect would removing the vanes on the HF horn have? Is this the cheap Mantaray!!??

ALTEC LANSING 604E 604 E DUPLEX SPEAKER WORKS #2 - eBay, Speakers, Vintage Electronics, Electronics. (end time 05-May-09 12:51:25 AEST)

ALTEC LANSING 604E 604 E SUPER DUPLEX SPEAKER WORKS #1 - eBay, Speakers, Vintage Electronics, Electronics. (end time 05-May-09 12:52:34 AEST)