Testing with 18SW115 drivers for now, those things are brutal, go to 30hz with real authority, modulate voice, you name it 🙂
Subjectively quite a bit more output than 4 tapped horns (similar to Xoc1 th18).
Directivity is excellent also, a lot better than i expected, paired with synergy horns this setup offers excellent rear rejection, bass is almost non-existent behind.
Will make some measurements in following days, it depends on weather
Subjectively quite a bit more output than 4 tapped horns (similar to Xoc1 th18).
Directivity is excellent also, a lot better than i expected, paired with synergy horns this setup offers excellent rear rejection, bass is almost non-existent behind.
Will make some measurements in following days, it depends on weather
Great work!
Should be able to wobble eyes in their sockets at 30meters with a gated kick drum 😉 .
So many configurations possible, will be looking forward to some polar measurements compared to the tapped horns.
Art
Wow!!!
Congratulations Amigo!
The build looks fantastic and very symmetrical!!
What's the configuration possible with those cabs, just the big eye?
Or you can put a pair with the ground plane as half eye? 👁️
I will call your build "Big Eye" 😎
Yes, this design actually offers more possible configurations than original design, there is eye, half eye pointing down, standard flh stack and even half eye config consisting of 2 cabs horizontal for not high enough stages (2 cabs are then 3x0.75m in dimension)
Ofcourse listening test are possible, I am located near Brežice in Slovenia @noname7, tell me when are you free and we could test them a bit more, for now fitted with 18sw115, waiting for 18ipals, pressure sensor hole was blocked for now for obvoius reasons.
Ofcourse listening test are possible, I am located near Brežice in Slovenia @noname7, tell me when are you free and we could test them a bit more, for now fitted with 18sw115, waiting for 18ipals, pressure sensor hole was blocked for now for obvoius reasons.
true, having 4 individual boxes instead of 2 doesn’t just make it easier to transport, it also gives more stacking options! Really like what you did here and thanks for the invite.
I’m not too far away, but snowed in at the moment, let’s make it happen when the weather is better 😉
I’m not too far away, but snowed in at the moment, let’s make it happen when the weather is better 😉
Here are response graphs, really close to original I think
No EQ, only crossovers BW24@22hz and LR24@80hz
Corrected response, same filters:
Flat 28hz, -3db is at approx 25-26hz, -10db at about 22-23hz. In corrected response only high shelf is applied to upper frequency reduction and gentle 40hz bell boost, Measured at about 5m distance from 4 cabinets in eye configuration.
Directivity is excellent and VERY noticeable, I expect at least 10-15db reduction, will measure it when weather gets better
No EQ, only crossovers BW24@22hz and LR24@80hz
Corrected response, same filters:
Flat 28hz, -3db is at approx 25-26hz, -10db at about 22-23hz. In corrected response only high shelf is applied to upper frequency reduction and gentle 40hz bell boost, Measured at about 5m distance from 4 cabinets in eye configuration.
Directivity is excellent and VERY noticeable, I expect at least 10-15db reduction, will measure it when weather gets better
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Yes 18sw115 is an amaizing driver, very usable in almost every box design.
The thing I like about those cabs is their "quick response" with normal program they do not sound "overly deep" like most BR cabs do IMO. They sound quite neutral and sound smaller than their size if that makes sense. Ofcourse that could be changed with DSP to suit preferences
But when songs with good low frequency content below about 35hz are played, the difference is massive and they really turn into beasts, every note is deep and effortless while still maintaining tight kick.
One "downside" is that bass seems quiter than it actually is, you can turn them much higher compared to tops and nothing will sound boomy. That can be a good thing or bad thing, depending or preferences
My favourite subs till this day for sure, was never really really happy with tapped horn sound quality (love output tho) but those cabs are really on another level. To simply put they can sound however I like and how i tune them. Can't wait too see how IPALs open even more possibilities. Hope boxes survive them 🙂
@noname7 , yes there is plan for more testing, probably this weekend
But for sure this design is working and I am already having something like 2x15" on my mind that goes to about 33-35hz -3db
The thing I like about those cabs is their "quick response" with normal program they do not sound "overly deep" like most BR cabs do IMO. They sound quite neutral and sound smaller than their size if that makes sense. Ofcourse that could be changed with DSP to suit preferences
But when songs with good low frequency content below about 35hz are played, the difference is massive and they really turn into beasts, every note is deep and effortless while still maintaining tight kick.
One "downside" is that bass seems quiter than it actually is, you can turn them much higher compared to tops and nothing will sound boomy. That can be a good thing or bad thing, depending or preferences
My favourite subs till this day for sure, was never really really happy with tapped horn sound quality (love output tho) but those cabs are really on another level. To simply put they can sound however I like and how i tune them. Can't wait too see how IPALs open even more possibilities. Hope boxes survive them 🙂
@noname7 , yes there is plan for more testing, probably this weekend
But for sure this design is working and I am already having something like 2x15" on my mind that goes to about 33-35hz -3db
i can give you a reference track that will surely be good to test with. let me know..
This track works great with those subs. Bass is clearly defined - foundamental frequency is always present and harmonics sit just right. Very happy with subjective tests
Yes, It is possible. Each box has 6 M10 threads on one side that you could use to ''connect'' 2 boxes together using some additional hardware. Even if using in eye configuration it should be beneficial since it would cancel out movement of drivers. When pushed really hard boxes like to ''jump'' a bit when used in singles.
Intresting happy to see them completed with the first messurments.
Without EQ comparable indeed with a simmilar peak. I would be interested if these can also play as high as the originals to around 150 Hz or atlest ?
Seems like they probably could tho but hard to say when having the cutoff filter that low. Especially the corrected grath rolling off around 60Hz is rly early for a sub like this but i assume you must be running kicks with them.
Besides that when you measure them again would you be able to measure also the distortion? That would be also quite interesting 🙂
Also the sensitivity at 1W would be quite intresting.
And as a tip for posting Smaaart measurements sharing the smoothing would be great 🙂 or ideally posting it with and without smoothing.
Anyways Congrats on the build ! 😀
Here are this weekend show results:
Setup picture (Tops were flown later ofcourse):
Frequency response without any EQ (Except a bit of 60-120hz reduction on BC118 as mentioned in first measured graphs), only delays and crossovers set. This place is acoustically very very difficult. Here are smaart measurements 1/6th octave smoothing.
Coherence is really bad due to bad acoustics:
Subjectively it sounded decent, BC118 integrates nicely with tapped horns, only a few minor dsp settings were needed. Overall SPL was just too much for building, windows were rattling on all floors so we were asked to turn it down a bit, Aluminium plates were completely cold entire night, I think we hit about 120V on peaks sometimes, so did not push them too hard. Waiting for outdoor season to really push those boxes, indoors tapped horns might actually be a better solution IMO.
Any questions welcome 🙂
Also sensitivity seems to be similar comparing 2 BC118 and 2 tapped horns (40-60Hz) - BC118 goes quite a bit lower tho
Setup picture (Tops were flown later ofcourse):
Frequency response without any EQ (Except a bit of 60-120hz reduction on BC118 as mentioned in first measured graphs), only delays and crossovers set. This place is acoustically very very difficult. Here are smaart measurements 1/6th octave smoothing.
Coherence is really bad due to bad acoustics:
Subjectively it sounded decent, BC118 integrates nicely with tapped horns, only a few minor dsp settings were needed. Overall SPL was just too much for building, windows were rattling on all floors so we were asked to turn it down a bit, Aluminium plates were completely cold entire night, I think we hit about 120V on peaks sometimes, so did not push them too hard. Waiting for outdoor season to really push those boxes, indoors tapped horns might actually be a better solution IMO.
Any questions welcome 🙂
Also sensitivity seems to be similar comparing 2 BC118 and 2 tapped horns (40-60Hz) - BC118 goes quite a bit lower tho