Omni 15 midrange driver farting
Posted: Sat Nov 27, 2021 3:45 am
Halfway through my Omni 15 build, I happened upon an already built 15 Tallboy on facebook marketplace at a price I couldn't resist. Got it home and the first thing I did was pull out the existing Kappa Pro 15 (non LF version and a terrible bass driver - no wonder the previous owner didn't like it), and replaced it with a 3015lf.
Driving it hard (a genuine 500w into the 8 ohm load), I found the first thing to distort is the midrange driver. A fart kind of sound. The sound went away if I dialled the bass eq back on my bass. With a thinner tone I could driver the volume harder and the mid got louder without farting. The more low end in the signal, the sooner the mid starts farting.
Is this normal? If not, what should I go looking for? I'm guessing check the crossover for the right components? It's an older build with an alpha 8 midrange - is there a reason the Alpha 6 is now specified in the plans?
Anyway, great sounding cab that I'm sure is going to cut well through the mix while having no shortage of low end. I'm quite keen to finish the half built one I've already started. Two has to be even better.
Driving it hard (a genuine 500w into the 8 ohm load), I found the first thing to distort is the midrange driver. A fart kind of sound. The sound went away if I dialled the bass eq back on my bass. With a thinner tone I could driver the volume harder and the mid got louder without farting. The more low end in the signal, the sooner the mid starts farting.
Is this normal? If not, what should I go looking for? I'm guessing check the crossover for the right components? It's an older build with an alpha 8 midrange - is there a reason the Alpha 6 is now specified in the plans?
Anyway, great sounding cab that I'm sure is going to cut well through the mix while having no shortage of low end. I'm quite keen to finish the half built one I've already started. Two has to be even better.