Placement [message #51633] |
Wed, 19 December 2007 01:53 ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
Zene Gillette
Messages: 88 Registered: May 2009
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Viscount |
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Wayne ... Just starting the Pro 7's. I have two rooms to choose for them. One has corners on 13' wall, but listening distance is limited to max of 10' from speaker. Other room is 12' wide but can't use corners (damn doors) and the 7's would have to go along side walls from 2' to 6' from back wall, only. Good thing is I would have up to 18' to listening position. I always thought a longer distance was better for horns. BTW the rest of speakers are horns. These rooms are adjacent and total volume (+ open kitchen and hallway) is 7000 cu ft. Zene
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You've got mail! [message #51639 is a reply to message #51638] |
Wed, 19 December 2007 15:56 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
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Wayne Parham
Messages: 18758 Registered: January 2001
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Illuminati (33rd Degree) |
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I'll send plans for the v1 model, which is the same size as the v2 model. Remind me around the first of the month and I'll send you the v2 plans. It's a little bit simpler build and has smoother response than v1, more like the original model and the prototype than the first production model was.Most everything is the same except the motor chamber layout. The new version is a little easier to build because it doesn't need the fill, and the chamber sizes are nearly ideal. But other than that, they are very similar horns. Be aware that the 12π hornsub is very large and powerful. It is overkill for all but the largest rooms, theaters and outdoor use. I designed it to provide very high fidelity at high power levels, the kind of thing needed for outdoor concerts and the like. So it is probably a lot bigger than you need.
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Re: You've got mail! [message #51641 is a reply to message #51640] |
Wed, 19 December 2007 20:19 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
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Wayne Parham
Messages: 18758 Registered: January 2001
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Illuminati (33rd Degree) |
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In most home listening rooms, I would prefer seven π cornerhorns. If corners aren't available, then go with four π speakers instead. In either case, you can augment the bottom octave with dedicated three π or four π subwoofers, if desired.Pro seven π cornerhorns are tuned to be slightly overdamped, which makes a good conjugate for corner loading. Pro four π speakers are too, for that matter. They work well in small to medium sized rooms, and don't become boomy when placed near boundaries. They are designed to work best with boundary reinforcement. You'll get good response to 40Hz with a 2226 in these designs, even without a sub. And they aren't terribly large, so they don't "take over" the room. Very large rooms have different requirements than small to medium size rooms. You won't pressurize the room and get "cabin gain" in a large room or outdoor space, so tuning is a bit different. And you expect to push the speakers much harder, so you want to optimize performance at high drive levels. For example, it is easy to generate over 100dB in a medium size room with very little distortion from a good quality direct radiating woofer. One hundred feet away from the stage at an outdoor concert is a little different. That's where the advantages of a large push-pull basshorn become apparent.
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