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Take a DI profile and leave the cab section on to make sure the
cabdriver is off. Then route the output of the KPA into your DAW with a
IR as speaker section. The sound is highly different from the IR that
was converted with cab maker and imported into the KPA
Yes. the problem comes form the fact that even if you take a DI profile, important information are stored in the cab section. Maybe the problem doesn't come from cab maker but from the fact that the KPA stores information (about tubes for instance) in the cab section when it should not.
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If you want to test how close the CabMaker really is, disable the Stack and use just a Dist stomp into your DAW with an IR.
Convert that IR and import to the Profiler, playing it with the same rig
(obviously) now with the Cab enabled in the Stack section.
Ok. The problem is that KPA users can be disappointed even if the cab maker works well ! They want to use (like me) their IRs in the KPA with Dist Stomp but with anything else too (amps, preamps profiles).
When I want to use an IR, I just want to apply an Eq curve. If there is an eq subsection in the cab section, this is exactly where things should be imported, the whole cab section should not be replaced.