 Scott
L wrote: | IMO A 60Hz attempt is too low and a 120Hz attempt too high. This
is a difficult task, that of properly integrating horn loaded mid-bass with
D.R subs.
What type
and slope crossover are you using ?
I'm
hoping you are going active here ?
How much
air can your sub woofer section move ?
You
simply MUST be able to move prodigious amounts of air at the very low
frequencies.
Keep in
mind, that in order for these two to integrate, you must maintain a linear
range of response, to at LEAST, an octave past either side of
the
crossover point. And that, is almost impossible with a horn loaded mid-bass.
The key word being "almost" but not impossible.
It's very
difficult. To use, say, a 100Hz x-over point, your mid bass horn should reach
an F3 somewhere close to 50Hz, and your subs should be linear
to 200Hz.
Most subs BEG to rise in response as frequency ascends. Ideally, this is dealt
with in the design, but a last ditch effort would be to add
EQ. after
the crossover.
Yes,
please do show pictures !
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Scott, I think you a bit
overly complicate the task of integration of mid/upper bass with LF. The key
mistake you make (in my view) is semantic. You call LF section as subwoofer
that immediately bring in imagination an industry boom box sitting in a corner
trying to fill the room with lower octaves. Yes, the integration of those type
solutions is very complicated and in my mind it still never work properly. Subwoofers
work OK with a pair of mini-monitors and total cost of $500. If you went to
extend to build multichannel time-aligned horn installation then you are way
out of subwoofers rhetoric and you need to talk/thin about a truly potent LF acoustic
system. I personally feel that line-arrays with cylindrical waves, good drivers
and long walls work spectacularly well with horns and they are very easy to
integrate. So, it is all about a proper chose of topology. Whatever it might be
it must not be subwoofers. Subwoofers as a category is consumer-level audio
element and the concept should not be used along withany high-endish objectives. |
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