Hey you're welcome. It was a learning experience for me, both in using the software and in seeing what a room shaped like that would do. Reflection die fast!
Directionality seems very good, too. Yes, I can simulate the Rockwool if I can find the specs, should be easy. You want to go 4 feet deep with it?
Directionality seems very good, too. Yes, I can simulate the Rockwool if I can find the specs, should be easy. You want to go 4 feet deep with it?
Would be nice to know how much needed. Just picked 48 out of a hat as it comes 16 wide and 32 seemed like not enough. Would also be nice to check out how far from backwall is ideal for placing it
OK, I looked it up and picked 4" thick Rockboard as the absorbent. Coming off the back wall I put 5 layers spaced 4" apart. The insulation is the size of the wall. Also 2 layers on the walls to the left and right of the listening position.
This makes for a very dead room. Reverberation is very low, localization is extremely good (dry acoustics). The 5 layers of Rockbaord isn't a black hole, but it does kill a lot. Some reflections make it back to the horn throat, but they are low in level and don't ever get back to the listener. I compared this to some simulations I've done of excellent rooms that I know, and the horn room is very dry, with very little scatter. Some of that will depend on the horn shape - for ease of simulation I changed over to a simple conical horn, expo would be even cleaner.
I simulated a single mono horn, but I would build stereo. I don't know if you want only the woofers in the horn, or the whole speaker. I'll try to get together some graphics for you to look at.
This makes for a very dead room. Reverberation is very low, localization is extremely good (dry acoustics). The 5 layers of Rockbaord isn't a black hole, but it does kill a lot. Some reflections make it back to the horn throat, but they are low in level and don't ever get back to the listener. I compared this to some simulations I've done of excellent rooms that I know, and the horn room is very dry, with very little scatter. Some of that will depend on the horn shape - for ease of simulation I changed over to a simple conical horn, expo would be even cleaner.
I simulated a single mono horn, but I would build stereo. I don't know if you want only the woofers in the horn, or the whole speaker. I'll try to get together some graphics for you to look at.
Really? Not enough to audibly modulate a true sub-bass conical horn driver when playing at THX reference? That's 'dead' enough for me.
Well I don't know. There are reflections off the back wall that travel up the horn. But how much they would modulate whats coming out of the horn, I don't know. How many dB down from the direct sound do the reflections need to be to not audibly modulate the horn output?
The sims do auralization via impulse. I can make impulse responses of several rooms that listeners with a convolver could compare. Lacking a convolver, I could transform a few tracks for listening. Likely best done via headphone.
The sims do auralization via impulse. I can make impulse responses of several rooms that listeners with a convolver could compare. Lacking a convolver, I could transform a few tracks for listening. Likely best done via headphone.
