I was playing around with Unibox using data I have for the TC2+ 12" DVC drivers I have on hand. I became curious about bandpass designs after reading how Dr. Geddes likes and uses them and the experience of Patrick Bateman on another thread.
I modeled up my drivers and got the following response with a single tuned bandpass (see chart). This is pretty good response, no? I was thinking this could possibly make an ideal bassbin for my Modula MTMs. I was thinking they could serve also as stands like most bassbins and have the port firing downwards to the floor.
I see that I will hit xmax at 27hz with full power, but I don't think they will likely see that much abuse.
I have some questions:
1) Do you guys have experience with bandpass designs? Did you like them? Did they sound good in your experience? Have you ever ran them up to 100hz?
2) They look to my naked eyes to roll off at 12db/octave on either side of bandpass. I eyeballed 23hz and 77hz for F3's. How would you cross these to the Modula's?
3) Does this look like a good bassbin design to you?
4) What volume displacement do you assume for a 12" sub? If the volumes of the two chambers are sensitive to actual volume, I assume it matters to get the driver volume displacement correct. How would you measure the volume?
I modeled up my drivers and got the following response with a single tuned bandpass (see chart). This is pretty good response, no? I was thinking this could possibly make an ideal bassbin for my Modula MTMs. I was thinking they could serve also as stands like most bassbins and have the port firing downwards to the floor.
I see that I will hit xmax at 27hz with full power, but I don't think they will likely see that much abuse.
I have some questions:
1) Do you guys have experience with bandpass designs? Did you like them? Did they sound good in your experience? Have you ever ran them up to 100hz?
2) They look to my naked eyes to roll off at 12db/octave on either side of bandpass. I eyeballed 23hz and 77hz for F3's. How would you cross these to the Modula's?
3) Does this look like a good bassbin design to you?
4) What volume displacement do you assume for a 12" sub? If the volumes of the two chambers are sensitive to actual volume, I assume it matters to get the driver volume displacement correct. How would you measure the volume?
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