Not what Ampeg uses in the Heritage but the B810 is close. This is the speaker that Ampeg uses in their regular 810 cabs. The original CTS speakers are available from time to time on ebay. You might need to get them reconed so factor that into the cost. The Weber 10FL bass speaker is another possibility.
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Last edited by beans-on-toast : 12-01-2013 at 10:03 PM.
A speaker you might consider is the Jensen MOD 10-50 .... it is a good sounding speaker, and it comes in the 32 ohm spec, but it has a 50 watt power handling rating ... years ago when I had a 810, I loaded it in the top 4 and it turned a somewhat iffy sounding cabinet to one I liked .... I just got tired of hauling an 810
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