RawB8figure - While I never used the i84 on an open-baffle speaker (haven't even experienced an OB design to be honest with you) - I did have the chance to use it with a (relatively inefficient) set of speakers making use of Adire Audio's (RIP) 4.5 inch drivers in a full-range configuration. Although it was a slimline cab, all the attributes that I found so attractive with the i84 (exceptional bass control and punch, blossomed mid-range without being over-done, with a ever so slightly rolled off high end) was still there in spades.