Hey all, I'm working on a cheap little cabinet-swap project and am looking for some suggestions. I will be installing 4x 10" Fender speakers (+ tweeter and all electronic guts) into an unloaded Ampeg 410he cabinet, which I got for dirt cheap, thus creating a 4ohm/1000w peak cabinet which matches my Ampeg SVTCL visually. I have calculated that the original Fender cabinet was tuned to 58Hz via the shelf port along the bottom. I was going to try and straight match 58Hz with the new cabinet but after some research online this seems a little high. I currently have two 4" flared ports coming in the mail which will allow me to tune the Ampeg to anything between 42Hz and 54Hz (due to port length limits and cabinet dimensions). I plan on using this with my band that tunes down to Drop C (CGCF) with the occasional drop to A. for that low beefy phatness. I am wondering if a cabinet tuning closer to 42Hz (or alternatively 54Hz) would be more beneficial for drop tuning... or perhaps somewhere in the middle ground? This will be my first project experimenting with cab port tunings so I would like some input on how a slightly lower tuning (or slightly higher tuning) will effect the sound and which would be a wiser starting point considering the low tuning before I start chopping and experimenting. Thanks gang!