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<blockquote data-quote="Douglas R. Allen" data-source="post: 217090" data-attributes="member: 71"><p>The IG4T is 100 degrees L/R and 20 degrees up and 70 degrees down. As I'm sure you know that on the outer fringes this is not a ruler response. SPL drops at the outside edges and top and bottom of the horn as with all speakers I've measured with Smaart. It is also frequency dependent in relation to horn size. An average 90X45 box is 5 degrees Left and Right less than the IG4T. Also, with the limited 20 degree up this keeps the highs off the ceiling and leaves more energy to go forward and down. It also helps when turning another speaker upside down and placing it on top, so they combine well. When looking at the phase response of 2 combined they couple very well right up to the highest frequencies. The Left/Right coverage in the horn has a tighter pattern at the top and widens out as it covers lower or down. Hard to describe but a tighter pattern on the top gives more spl to reach out and wider pattern in the lower section gives a little less spl so up close it covers more but not as bright for those sitting close. Kind of the best of both worlds. Should you get a chance give one a listen. The balloon plot for them is very well behaved. Even compared to something like a Danley SM80 which are a very respected point source speaker. Good talking with you. Doug</p></blockquote><p></p>
[QUOTE="Douglas R. Allen, post: 217090, member: 71"] The IG4T is 100 degrees L/R and 20 degrees up and 70 degrees down. As I'm sure you know that on the outer fringes this is not a ruler response. SPL drops at the outside edges and top and bottom of the horn as with all speakers I've measured with Smaart. It is also frequency dependent in relation to horn size. An average 90X45 box is 5 degrees Left and Right less than the IG4T. Also, with the limited 20 degree up this keeps the highs off the ceiling and leaves more energy to go forward and down. It also helps when turning another speaker upside down and placing it on top, so they combine well. When looking at the phase response of 2 combined they couple very well right up to the highest frequencies. The Left/Right coverage in the horn has a tighter pattern at the top and widens out as it covers lower or down. Hard to describe but a tighter pattern on the top gives more spl to reach out and wider pattern in the lower section gives a little less spl so up close it covers more but not as bright for those sitting close. Kind of the best of both worlds. Should you get a chance give one a listen. The balloon plot for them is very well behaved. Even compared to something like a Danley SM80 which are a very respected point source speaker. Good talking with you. Doug [/QUOTE]
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