I have been fiddling with some Redwirez bass cabinet IRs. I have the 810 and the B15 impulses. The B15 though was not fitted with the stock speaker, rather a JBL D-140. How different does the B15 sound with the D140 compared to stock? Should I ask Redwirez to put a stock B15 on their list of cabs to model?
I had a K140 in my B15 for a while, not sure how close the K and D series are but it sounded nothing like the stock B15 speaker IMO. It very much had its own sound, lots of upper mid range, but compared to the reconed CTS I have in there now (or my old single-baffle cab with the stock speaker) I think the CTS speakers are generally just much smoother and powerful in the low-mids than the JBL.