Re: speed cobra and bass drum setup, adjustement for best results?
From what I have read death metal double bass is all about speed which mean very high speed tension , very high head tension , pillows in the drums and trigger. They don't really care about the drum sound by itself , the trigger/module does that part.
It also sounds like your 1cm between beater head and pedal is way too short. Put the thing in the middle of the head and go from there