A few weeks ago I bought 4 Kemper Kone speakers to put into a 4x12 cab. With this rig I'm using an unpowered head with a Camplifier power amp installed (https://digitalguitargear.com/camplifier-SHP/). Of course with the Kones the sound is so much better than running cab off through a Marshall 4x12 with traditional guitar speakers. I'm running into an issue, though, where randomly the volume will drop significantly, stay that way for a while (so I'll turn the output level up) then out of nowhere, it goes back up to it's original level.
This has only happened since I started using it with the Kemper-loaded 4x12 cab. Prior to that I was using it with a Marshall cab with WGS guitar speakers. While the sound was not as good, the volume dumps/jumps never happened.
So I'm thinking it's got to be something with my wiring right? I wired them Series/Parallel as per the instructions that came with the Kones. Testing the impedance, it reads 4.2 ohms, kinda jumping between 4.2-4.4 - So I had a friend come over the other night, who's a lot more experienced with this type of thing (licensed Master Electrician, brilliant soundman, builds PA rigs etc), he measured & got the same results I'm getting.
All the solder joints are tight, no movement whatsoever, however I'm not the best solder-er in the world so my solder joints aren't the best & there's undoubtedly too much solder on those joints - do you think that might be causing an issue with the continuity of the impedance of the signal flowing through these solder joints? That's the only thing I can think of & if that's the case could it be the amp dropping power to protect itself?
Any other ideas? Thanks in advance!