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In the Forum: Horn-Loaded Speakers
In the Thread: Infinite Baffle Implementation and "Compression Sub-bass"
Post Subject: MorePosted by skushino on: 12/15/2016
ScottL,

It looks like the two pics you posted are of different systems, the first being slot loaded PP, and the second (full-system) showing a "traditional" IB.  You also seem to be confirming my intuitive hunch of potential sound benefits and horn matching using mild compression loading, or exhaust area < Sd.  I want to explore further.
Can you share further about your design inputs / criteria?  

For instance, the drivers I'll use are 4 x Aura 1808, Qts = 0.19, Fs = 24 Hz, 2 each in separate L + R manifolds.  These numbers differ from traditional IB drivers, but I'm not discouraged from auditioning them in an IB configuration. 

Also, what guidance, if any, wrt: exhaust area?  Your comment about observing rising Q and lower Fs using compression are encouraging.

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