Transfer Function Magnitude WinIsd Reference Window?
Hello, I am modeling a Ciare HSG 200-44 in Winisd and have a question about transfer function magnitude. I am going for the flattest response here with a tuning of 34 HZ. I am using the Extended bass shelf -3db alignment option since that option suggest a similar size enclosure to what I have, which is 1 cf.
The Quasi Butterworth is supposed to be a flatter response but it suggests an enclosure that is way to small....tuning to 34hz there would be no room for the port in that small of an enclosure. I would really like to be in the 20's but I do not think that is possible, mainly due to the hi increase of port noise. I am using a 3 1/2" dual flared port at about 20" long which is about all I can fit in my 1 cf enclosure.
I have played around with the driver and came up with a pretty good looking response, however the Transfer function magnitude graph looks a bit funny.
It is flat in the required frequencies but it is not in the desired reference window of 0 to -3 db. Does it really matter if I am "in the window" on the TFM graph...the SPL graph seems good! So I am confused when comparing SPL to TMF.
I am posting some pictures of the charts to show what I have, as well as the driver specs. I have entered 250 watts for the signal.
I am not dead set on this driver but it has a higher spl that other options.
It has to be an 8" 8ohm driver. I have an available 300 watts(rms) for my sub. My setup is a 3way powered speaker and I have a nice dsp setup so
I have many xover options. Butterworth, Bessel, and LR, up to 3rd order.
(Note...I have added a lp and hp filter in the model)
The only other driver I could find that will fit the bill is a Dayton RSS210HO-8
The Dayton looks better on Winisd but the SPL is a good bit lower which is leaning me towards the Ciare.
Anyway I would greatly appreciate any help and or advice, especially with the transfer function magnitude(since that is what this post was really about)!😎
Hello, I am modeling a Ciare HSG 200-44 in Winisd and have a question about transfer function magnitude. I am going for the flattest response here with a tuning of 34 HZ. I am using the Extended bass shelf -3db alignment option since that option suggest a similar size enclosure to what I have, which is 1 cf.
The Quasi Butterworth is supposed to be a flatter response but it suggests an enclosure that is way to small....tuning to 34hz there would be no room for the port in that small of an enclosure. I would really like to be in the 20's but I do not think that is possible, mainly due to the hi increase of port noise. I am using a 3 1/2" dual flared port at about 20" long which is about all I can fit in my 1 cf enclosure.
I have played around with the driver and came up with a pretty good looking response, however the Transfer function magnitude graph looks a bit funny.
It is flat in the required frequencies but it is not in the desired reference window of 0 to -3 db. Does it really matter if I am "in the window" on the TFM graph...the SPL graph seems good! So I am confused when comparing SPL to TMF.
I am posting some pictures of the charts to show what I have, as well as the driver specs. I have entered 250 watts for the signal.
I am not dead set on this driver but it has a higher spl that other options.
It has to be an 8" 8ohm driver. I have an available 300 watts(rms) for my sub. My setup is a 3way powered speaker and I have a nice dsp setup so
I have many xover options. Butterworth, Bessel, and LR, up to 3rd order.
(Note...I have added a lp and hp filter in the model)
The only other driver I could find that will fit the bill is a Dayton RSS210HO-8
The Dayton looks better on Winisd but the SPL is a good bit lower which is leaning me towards the Ciare.
Anyway I would greatly appreciate any help and or advice, especially with the transfer function magnitude(since that is what this post was really about)!😎
Attachments
Last edited:
