Trying to Get "My Ducts in a Row"

[toddalin]

OK, I downloaded the WinISD and have been attemping to better tune my L200 cabinets to the 130As.

I measure approximately 29"x22.5"x avg 14.5" internal volume = 5.48 cu ft or 155 liters. Lets take 5 liters away for the components and crossovers, (130A, LE175-HL91/075/N1200/N8000).

The cabinet has two 4" ports 7.5" deep.

Based on a volume of 150 liters and the port dimentions, the cabinet is tuned to 34.8 Hz. This is way too low for the 130A.

To best stay (approximately) within the bottom perferred (purple) line and hang on as far down as possible, the cabinet should be tuned to approximately 50 Hz. Without changing the cabinet volume, when I ask for this tuning freq, the program reports two 4" dia ports of 2.1".

Does this sound like I did it properly? And, do people concur on a 50Hz tuning for this speaker (130A)?

[Lancer]

And, do people concur on a 50Hz tuning for this speaker (130A)?

Yeah. 45 to 50 Hz should be fine.