They have a 3” version of that. We did a desktop FAST for a fellow in Italy. The bass is no more impressive that the same midTweeter in a (much larger) Frigel-Horn Lite with the same midTweeter run full-range.
dave
There is about 12dB of boost below 140Hz and about 12dB of cut at 140 tapering off as it goes higher back to a boost of 4dB or so on the top end.
It uses less EQ than my LX521 dipoles but they have much more x-max to handle it. The SEAS drivers still have good output below 30Hz, on test tracks with high levels of ULF you can really see the drivers move. I really like the bass from LX521 and if I had nearly 4m space to all walls I suspect I would like the rest of it more too.
The footprint of those is only slightly wider than the 10" driver but 4 of those SEAS drivers needed is not a cheap proposition.
I don't find the bass from the arrays to be pressurised probably because it is spread throughout the line in height. The dipole excites the room modes less and can get away without any room EQ and still get a flat sounding response. After EQ on the array they are still different but much harder to say which one I prefer. They are both really good.
True manufacturers data can be optimistic. Sd is usually pretty accurate and x-max can be worked out to be comparable by using the same formula of distances if you don't trust what the manufacturer tells you or you want to compare apples to apples. look at the difference between Celestion and Faital Pro, Celestion are very conservative Faital Pro more optimistic 🙂
That is a good reason to choose cone area instead of x-max as the means to more air movement. The opposite of getting a small footprint though.
I don't hear any of it with the drivers I have but it can be an issue to consider when picking a driver.
When arraying drivers the Fs is less important than it would be if only using a single so don't count drivers out just because of that spec. Each speaker only does a fraction of the work if there are enough of them, in that way you are only asking for a little from each below Fs. Obviously lower is still better.
I don't think 105dB at 25Hz is that ambitious, but it does depend if that is absolute maximum or loafing along. My Left and Right speakers combined would get to that but only as a maximum.
Ok but only to a certain extent ? You can't get 20hz out of a tweeter, at least not at a listenable level...
Never heard a 2 liters total Vd array system made of tiny drivers, so i can't say! It's counter-intuitive for me to even think that would equal the sonic results of the equivalent 2 liters Vd big drivers set up... But i may be surprised ?
That is a bit of an extreme example but if you had enough of them and their Fs was low enough then yes you could. Not a practical situation to try for given the number of tweeters you would need to get anywhere near. A super extreme version of Danley's Jericho 🙂
A line of 6" woofers with decent x-max and fairly low Fs is a practical situation.
To match the 1 litre of Vd would need 11 to 12 6" drivers with 6mm X-max.
I really like the idea of a line of smaller woofers with a synergy horn as the mid and tweeter section. Or even a Small Syn like Bill's with the spread woofers for lower directivity crossing to dipole to maintain some directivity all the way down.
My line array has an in box resonance of about 140Hz and they are able to produce a lot of output down to whatever point you EQ them, the trade off being the overall SPL level drops as you EQ more just like a Linkwitz transform. The more drivers you use the more you can EQ them as each is then a lesser part of the overall output.
The sonic result is very good for listening to music in normal living rooms at normal volumes. It is a lot of cone area for the size not moving very far. In commercial speakers the IDS-25 from Roger Russell is the closest if you can find someone who has one go and have a listen and see for yourself.
A system with a Vd of 2 litres (2000cm3) is two of your Faital 18" woofers with 9.25mm X-max. In a sealed box that is 110dB at 20Hz. Mine have 1/5th of the Vd so that is not a fair comparison it is more like three of the 6" woofers each side.
The other thing to bear in mind is that when used in an open baffle below 50Hz you need a huge amount more Vd to equal a sealed box so your 18" woofers could well be limited severely in that region if used dipole.
For example the array has more effective output at 30Hz than my LX521 does with 2 x 10 woofers of 14mm x-max each in dipole configuration.
A line of 6" woofers with decent x-max and fairly low Fs is a practical situation.
To match the 1 litre of Vd would need 11 to 12 6" drivers with 6mm X-max.
I really like the idea of a line of smaller woofers with a synergy horn as the mid and tweeter section. Or even a Small Syn like Bill's with the spread woofers for lower directivity crossing to dipole to maintain some directivity all the way down.
My line array has an in box resonance of about 140Hz and they are able to produce a lot of output down to whatever point you EQ them, the trade off being the overall SPL level drops as you EQ more just like a Linkwitz transform. The more drivers you use the more you can EQ them as each is then a lesser part of the overall output.
The sonic result is very good for listening to music in normal living rooms at normal volumes. It is a lot of cone area for the size not moving very far. In commercial speakers the IDS-25 from Roger Russell is the closest if you can find someone who has one go and have a listen and see for yourself.
A system with a Vd of 2 litres (2000cm3) is two of your Faital 18" woofers with 9.25mm X-max. In a sealed box that is 110dB at 20Hz. Mine have 1/5th of the Vd so that is not a fair comparison it is more like three of the 6" woofers each side.
The other thing to bear in mind is that when used in an open baffle below 50Hz you need a huge amount more Vd to equal a sealed box so your 18" woofers could well be limited severely in that region if used dipole.
For example the array has more effective output at 30Hz than my LX521 does with 2 x 10 woofers of 14mm x-max each in dipole configuration.
Back in 2008 I heard these in Montreal. A clever up firing corner horn with an 8" fullrange. Certainly keeps them out of the way and the footprint small. They worked well and had good body, except that the room was too wide for a tight center image. I don't remember how they were built on the inside.
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I wonder what driver that is? And who did the well done EnABL job? (i couldn’t find any pictures in iPhoto). The horn does strike a note of familiarity… a sketched drawing, not a picture.
dave
dave
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