rockiron

I have a measurement mic,, been too cold lately to mess with it. Thanks to all for the advice

Ordered an SP4 15. I'm designing my box and would like some opinions on lower tuning, 25-28ish hertz.I'll be running a crescendo bc3500. I know the "norm" is to have port tunng a bit higher, and my current sub is tuned to 32 (SSD 15) I was hoping to get some thoughts

Gonna need to measure cabin gain.

4.5 cube

Why not? It models flat tuned to 25 hertz in win isd. Fs of the sp4 is 27 I believe. I prefer to not have any peaky response when designing, cabin gain will provide plenty of that. It just seems that the standard issue answer of what to tune to is in the low 30's,,,this is for daily music pounding,,, I want loud but don't care about numbers