Re: Danley SM 80 vs SM 60F?
When you say "=" I assume it is maximum output? or price or size or weight or SPL/dollar or something else?
Are you talking about with the same level input or maximum capabilities?
There are all sorts of different ways to compare products-so that has to be more specific
The question has to be asked-At what freq?
The TH118 goes lower than the BC412-so at 35Hz the answer is going to be different than at 45Hz.
And the response curve is slightly different between the different models-so that number will also change as you change freq.
But "assuming" the question is "within the intended passband of the "lessor" (freq response wise) a rough guess could be figured out.
So if you look at "the math" then both the BC412 and BC415 are "equal" to 4 TH118s.
The BC412 and BC415 are only 1dB apart in terms of max output spec.
I can assure you the "effective SPL" (or what it seems like to a person-not a measurement system) is much larger than that.
The BC415 is just "bigger" sounding.
I have not compared 4 TH118s to either of them-but going from a single TH118 to either one (as switched in the demo room), there is a huge difference-I would guess much larger than 6dB.
I am not sure how much of this is actual (as in measured) or apparent (as in "feeling"). THe BC cabinets just "appear" to have more impact. This could be from the added directivity they have (so as not to energize other parts of the room) so the energy is mostly going forward.
For portability/scalability the TH118 wins hands down-no question. But until I prove to myself otherwise-I would take the BC415 in terms of extension-fun-impact etc.
The big difference between the BC412 and the BC415 is the low freq extension. They are a different type of horn alignment-that a patent is applied for.
