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Multi-Way Conventional loudspeakers with crossovers

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Old 14th March 2020, 05:27 PM   #11
manninen is offline manninen  Finland
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Been rounding up with EDGE woofers on the box.
jbl 5674 array seems best, so no need to desing it from scratch. jbl did it already
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Old 16th March 2020, 06:47 AM   #12
manninen is offline manninen  Finland
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simulated polars from just 4x12" on front. those jbl waveguides should give me DI >9 from 400hz, its quite good match but my audio friend noticed directivity rise up quickly from 100 to 500hz

what we could do is on both side to the box another 12", 6x12" on one box two active channels.

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we can bend directivity on needed area, area aint big and not wide but there is things happening.

Thanks ville for helping me with vituixcad

that diamond shape 5674 woofer arroy i cannot do, height goes over 180cm with that one

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Old 18th April 2020, 06:11 PM   #13
manninen is offline manninen  Finland
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More simulations done, that quad 12" would give nice punch but seems that 400hz is too much for that setup directivity wise.

So i lowered my output capacity to 12" on rear and 12" on back.

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rear driver gives me this, i hope it kills front wall reflection

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driver height looked well after jbl factory, midrange height is just above floor reflection and woofer can be placed under that reflection.

Does anyone know high playing 18" which could do well 400hz

I only know phl audio which genelec use their largest monitor.
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Old 19th April 2020, 09:38 PM   #14
manninen is offline manninen  Finland
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this is issue with 4x12" on front.
upper woofers needs to be 190mm back them to match lower woofers, its just about limits to reference axle.
picture of all being on and just 2row uppers with same eq, lower woofers slightlty cancelling output allready

i have two sealed speakers, today i listened them to be endfired.
does not do much against the wall, but what it do it kind of accurate 70hz area but everything around kind of level up.

might be that these type of speakers need more space to work better

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Old 14th May 2020, 10:04 AM   #15
manninen is offline manninen  Finland
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started to make some boxes. Went with single 12" on front, space for 15" if needed
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Old 19th May 2020, 06:56 PM   #16
manninen is offline manninen  Finland
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Bass boxes are playing!! F1 on top cause jbl high horns are delayed.
Cardioid setup made 100% vituixcad diffraction tool, i believe quite true under 100hz.
Bass is definitely most different iŽve had in this room.

12" on baffle aint that good as inlow 135hz horn was.
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Old 23rd May 2020, 12:45 PM   #17
manninen is offline manninen  Finland
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This setup sounds quite good for my inner basshead

rear polarity is reversed as in true cardiod but theres high pass which makes it in phase but gains only +1 to 2db. does not need much room correction.
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