I'm using winisd to size a box for a subwoofer.
I'm looking at two possibilities:
1. Flat spl/fr curve response from crossover down to ~21hz where it drops like a rock with cone excursion exceeded at ~18hz
2. spl/fr curve drops ~1.5db/10hz starting around 55hz down to ~25hz and then drops fast, cone excursion exceeded at ~22hz
The sub will be vented. Case number 2 has a higher max. spl than case 1. Something like 106 vs 101.
My biggest concern was if the fr curve is level all the way down to ~20hz, will it sound boomey when you factor in the room response below 45hz or so. I used the room mode spreadsheet from FRD, but I'm not sure how to interpret and apply the data to the sub design. From what I gather, there is a peak around 40hz, ?magnitude.
Any feedback is greatly appreciated, as I'm hoping to start on it this weekend.
thanks,
Brady
I'm looking at two possibilities:
1. Flat spl/fr curve response from crossover down to ~21hz where it drops like a rock with cone excursion exceeded at ~18hz
2. spl/fr curve drops ~1.5db/10hz starting around 55hz down to ~25hz and then drops fast, cone excursion exceeded at ~22hz
The sub will be vented. Case number 2 has a higher max. spl than case 1. Something like 106 vs 101.
My biggest concern was if the fr curve is level all the way down to ~20hz, will it sound boomey when you factor in the room response below 45hz or so. I used the room mode spreadsheet from FRD, but I'm not sure how to interpret and apply the data to the sub design. From what I gather, there is a peak around 40hz, ?magnitude.
Any feedback is greatly appreciated, as I'm hoping to start on it this weekend.
thanks,
Brady