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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