Hello. I have a pair of 15-inch drivers and two closed cabinets of 113 litres. I was wondering if that driver could fit in that box and if anyone here could be so helpful as to give me measurements of a possible bass port. The thiele data is on the attached picture. Thanks.
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No problem...my sim has a "wanted" ported enclosure of 130.4 liters of volume, your 113,really close. I just changed it, no real difference.
At 113 liters, I got minus 3.06 Db at 44.15 hertz. Tuned frequency of the box (fb) of 41.54 hertz, Since I saw no power rating in Watts, the port velocity wouldn't come up...I used a 140mm diameter port & got a 130 mm long port.
The efficiency bandwidth product was way up at 97.8 , firmly in the ported camp of design.
===========================================================================================Rick...
At 113 liters, I got minus 3.06 Db at 44.15 hertz. Tuned frequency of the box (fb) of 41.54 hertz, Since I saw no power rating in Watts, the port velocity wouldn't come up...I used a 140mm diameter port & got a 130 mm long port.
The efficiency bandwidth product was way up at 97.8 , firmly in the ported camp of design.
===========================================================================================Rick...
Yep, it's a PA style for sure...inputting that 300 watt ability, by retuning to 240 liters worth instead of 113 liters...& dropping the box frequency down to 38 hertz, she can reach down to 34.62 hertz, an even three decibels down.
A 200 mm by 300mm nearly square port, 327mm long....the port velocity is just fine...BTW, the calculations for the 113 liter size has the port velocity a bit on the fast end of the spectrum.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
A 200 mm by 300mm nearly square port, 327mm long....the port velocity is just fine...BTW, the calculations for the 113 liter size has the port velocity a bit on the fast end of the spectrum.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
Yeah, at only 113 liters worth, one gets a cube-root of only 483 mm for a fifteen-incher!! A really small enclosure! Most likely a small PA monitor design...something that would be mounted on a tall stand for sound reinforcement.
This driver really isn't suited for "Hi-Fi".
Calling it a "large power sub woofer" is somewhat deceptive.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
This driver really isn't suited for "Hi-Fi".
Calling it a "large power sub woofer" is somewhat deceptive.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
There ya' go...cheap, "loud" ...common type stuff down here in my adopted Argentina..."Polypropylene, Trapezoid"...even the cabinet is plastic...Oh, sorry "Composites" AKA, junk.
--------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
--------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
If you can't find the exact size "pipe" for your port, I have some other dimensions...150mm diameter, 157mm long/ 200mm diameter, 327mm long/220mm diameter, 412mm long.
As the volume of the port goes up, the port air velocity goes down and we are going to eat into the internal volume as well...
--------------------------------------------------------------------------------------------------------------------------------------Rick...