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noviygera wrote:

My mid/upper horns play down to 190Hz. That is -- 188Hz is the Fs of the mid. It's a horn loaded a 10" Precision Device driver. So I need a section (or two sections) to cover the bottom (below 190hz).

Herman, if you use Precision Devices hen you are at mid-high 90 sensitively, I am right?

noviygera wrote:

1. direct radiator (or multiples) in sealed box

It might be problematic with one channel as a crossover point is too high for a single god bass driver to handle it.  If you have very small room then you might experiment with an array of driver like Altec 515B or 515E. The are basso the same driver but with different magnets type. They have around 30Hz resonance and have good tone under 200Hz. The key in using them do not let them to exert too much so you need to have ether a very small room or very many drivers – then become costly nowadays. Otherwise I would do with two channels separate bass chanals.

noviygera wrote:

2. "properly" made rectangular horn to play down to about 100Hz with as few compromises as possible + sealed subs below 100Hz

This would work as well. If you do rectangular then you might get 80-100Hz under your MF channel. Measure the clearance between your MF and floor and you will see how much space you have. If you go for 80Hz horn and chose parabolic profile then the problem of yours will not be the size of mouth but the length of horn. to make the horn more less EQ bass properly you would need to make the throat relatively small the will make the horn too long. Since the channels need to be time-aligned with MF it might be a true ugly looking configuration. Why don’t you think Bruce went for large-throat and short horn – to make it look acceptable. So, you would need to find a compromise between all parameters of the horn to make it to work propel and to look good in context of your frame. This might be a bit tricky and with all apparent simplicity of the task very few people managed to make this arrangement interesting.

noviygera wrote:

3. something like the Imperial horn sub:  http://www.decware.com/ImperialSO.htm

I don’t really understand what they are proposing to do.

noviygera wrote:

4. Fostex FW800HS 31.5" Super-Bass System, like here:  http://www.kcsloudspeakers.com/

I never heard this woofer but can presume that it will not be so great at 200Hz

noviygera wrote:

The problem is that I've only heard my own Edgar horns. I have NOT heard the other options I listed above. I know what I want to get in terms of sound -- It is the range below 200Hz produced properly: It must be, detailed texturally, effortless and quick. It must sound dynamically similar at low and high levels. It must NOT be boomy or bloated sounding. It must have a natural tone that does not stand out as specifically "clean" or "tubby" What options or configurations should I consider to meet the above goals?

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