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Jessie, there is another solution that you might consider, that might be viewed as compromise for one-side as might not be view is compromised from other side. If to allowed ourselves to close eyes to midbass timing-integration and if the geography or your room would allow then I think it would be rational, also to think about corner-loaded sub-45Hz.

When you build horns you will be able for use your installation in a way how used my Macondo, upperbass horn crossing all the way down. Then, when the midbass will be done you will lift up the crossover in your upper bass horn. In this scenario the lower you go in your midbass horn the more interesting result you will have.  So, the corner-loaded midbass will half more timing problems will have more cavity colorations but it will also allow you with a relatively it simple expenses to go for 35Hz-40Hz region. I have to tell, that it is not so clean to me what I would choose if I were doing the project myself.

In this decision, it will be something that you might not considering yet - you do not know how the specifics of your room will handle ether your straight  45Hz or the hypothetical 30Hz corner-loaded horn. Read my article about the “Embedded Micro-Positioning”. It might be extremely brutal. You might have a perfectly performing 45Hz straight horn that you will hang above your installation, but the horn will output nothing, literally nothing. The irony will be that considering the geometry of this 45Hz you will not be able to move it, as moving it even 6 feet away will have practically no effect.

So, here is the best investment in your upper bass horn that I might propose you can do:  in 10 days, during your Assumption of the Blessed Virgin Mary holiday, put your wife in front a specter analyzer and explain to her what to look for. Attach 40-200Hz bandpassed little sealed speaker to a tall 10-15 feet pole and a run across your room like a wounded in ass gazelle, while your wife is looking at the spectral analyzer is in results of your movement. You might do it yourself as well, if you use computer-based RTA then you might output the results to a large side TV. Do not forget make the same experiment for the different microphone positioning.  This way it will not give you exact picture how “it” will sound in your room, but it will secure you from making large strategic mistakes or perhaps help you to discover a more winning topology in your given case.

No matter what you will be doing, if you have your room as your ally then it will be much better than to have your room as your foe….

Rerurn to Romy the Cat's Site