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Multi-Way Conventional loudspeakers with crossovers

Box port or crossover dippity do
Box port or crossover dippity do
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Old 21st October 2019, 03:00 PM   #11
8ntractor is offline 8ntractor  Canada
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thank you I understand. At one meter if everything below 200hz is removed the response is choppy but relatively flat. the tweeter is inverted. and the top octave still rolls off. not sure how to improve the choppiness. I measured at the listening position and included those charts also. thanks again
Attached Images
File Type: jpg left one meter.jpg (87.3 KB, 75 views)
File Type: jpg right one meter.jpg (77.2 KB, 76 views)
File Type: jpg left listening positon fr and phase.jpg (79.7 KB, 76 views)
File Type: jpg right listening position fr and phase.jpg (86.6 KB, 75 views)

Last edited by 8ntractor; 21st October 2019 at 03:19 PM.
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Old 21st October 2019, 03:39 PM   #12
eriksquires is offline eriksquires  United States
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Don't worry about the chop.



Your system is pointing the wrong way. You want it to descend from around 100-200 Hz. See the B&K curve:


bruel & kjaer optimum curve For hifi - Members Albums Category - The Klipsch Audio Community


It also seems like you will need to EQ the tweeter a little to get you the last octave.



Measure the drivers individually at 1m and import into XSim. If you don't know how to measure relative speaker distance, that will be needed as well. Once there, rethink your crossover.
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Old 21st October 2019, 04:02 PM   #13
8ntractor is offline 8ntractor  Canada
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thank you eriksquires I will do that I will measure one woofer and one tweeter and enter them in xsim. thank you for the information on the optimum curve.
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Old 21st October 2019, 09:12 PM   #14
8ntractor is offline 8ntractor  Canada
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here is the measurements with one woof one tweet and in x sim. I included the spl for the two speakers combined maybe I should just leave on woof disconnected.
Attached Images
File Type: jpg fr and actual speakers oct 21.jpg (79.6 KB, 68 views)
File Type: jpg impedance oct 21.jpg (70.1 KB, 15 views)
File Type: jpg crossover oct 21.jpg (48.7 KB, 18 views)
File Type: jpg one woof one tweet combined.jpg (76.3 KB, 21 views)
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Old 21st October 2019, 11:43 PM   #15
8ntractor is offline 8ntractor  Canada
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did you mean the drivers without the crossover?
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Old 22nd October 2019, 01:00 AM   #16
8ntractor is offline 8ntractor  Canada
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ok running through xsim with the actual drivers a few small adjustments to the crossover and I think the slope is more like you showed me. what do you think?
Attached Images
File Type: jpg nx crossover change.jpg (51.4 KB, 19 views)
File Type: jpg nx crossover change imp.jpg (68.3 KB, 12 views)
File Type: jpg nx crossover change fr.jpg (82.6 KB, 16 views)
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Old 22nd October 2019, 01:09 AM   #17
AllenB is online now AllenB  Australia
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I use holmimpulse to measure. You cut (gate) the result to remove the reflections. The highs come out clean and the lows become limited accordingly. This makes sense, where smoothing wouldn't.
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Old 22nd October 2019, 01:48 AM   #18
8ntractor is offline 8ntractor  Canada
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thank you - I downloaded holmimpulse and will remeasure.

Last edited by 8ntractor; 22nd October 2019 at 02:06 AM.
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Old 22nd October 2019, 01:58 AM   #19
8ntractor is offline 8ntractor  Canada
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ok running through xsim with the actual drivers a few small adjustments to the crossover and I think the slope is more like you showed me. what do you think?
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Old 22nd October 2019, 01:58 AM   #20
eriksquires is offline eriksquires  United States
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Hi,



Yes, measure the drivers without crossovers before importing.


I think Holm will also give you the relative driver measurements, right? Make sure you set the woofer delay in Xsim so your phase matching is accurate.
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