I'm waiting the day when we explain to us than speakers are better behind us...1' from the back wall but of course firering to the front wall, the listener between !
Interesting to see that, thanks for the link. Differences perceived compared to the Behringer 'reference' speaker (both it and the omni used with subwoofers if I understood correctly) for the Orion and the omni don't seem to amount to much statistically, and are only for the parameter of 'acoustic scene', not the total performance of the speakers used. Musical selections were also very limited. I must say I find the conclusions surprising! My experience of live orchestras vs good hifi playing recordings of orchestral music is that it isn't all that 'plausable' in any sense, although it can be a rewarding experience on its own terms. The Bose 901, on the two occasions I heard them, sounded shockingly poor. I suspect this was partly due to a highly flawed if not downright bizarre design premise, but mostly due to the implementation. Although I have other projects on the go (NaO Notes, Bagby Piccolos and a design similar to the Serenity Super 7s), I do intend to build the LXminis at some point and already have the plans.
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Sounds d r a s t i c a l l y different raw (and a plastic frame). Will require a completely different eq. Any ideas? Have you actually heard it?
Frames:
😎
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Well, I will be over his house next month to have a listen to his new and improved speakers....
I will report back.
I'll remember to bring my lady gaga recordings, (don't worry....they're FLAC codec)
🙂
Eickmeir or Linkwitz?
I'm on the verge of embarking on a project which is inspired by both Eickmeir and you, so I'd be curious to see what you think.
Basically I purchased a miniAmbio because you reported good results with it.
I've had good results too, but I've found that the image size suffers because the speakers are so close together.
I know that you went with an array, and I think that would be one solution; arrays tend to sound "big"
But I've been thinking about doing something similar to what Eickmeier did. Basically have a speaker that's firing a significant fraction of sound at the back wall, a la Bose 901
Thoughts?
I set up my Kef Uni-Qs like this for the past week, and I like the sound.
Eickmeir's.
Actually, I didn't like the straight line array (the flooder) "supernova"
I very much liked the focused array (point source) "the event horizon"
I wouldn't suggest combining RACE with a flooder type of speaker.
but I would like to hear about your idea.
Beta Testing of LXMini "Clone"
Hi,
I thought some of you maybe interested in my mock up version of the LXMini. More info will follow once I have performed more testing of this setup.
It seems to work with Mark Audio CHR-70 III, the driver I am using, I am testing the top section first. The sound seems promising, very open and large sound stage for such a small speakers. BTW all the info of this speakers comes from Linkwitz's website I didn't buy the construction package.
Cheers.
Hi,
I thought some of you maybe interested in my mock up version of the LXMini. More info will follow once I have performed more testing of this setup.
It seems to work with Mark Audio CHR-70 III, the driver I am using, I am testing the top section first. The sound seems promising, very open and large sound stage for such a small speakers. BTW all the info of this speakers comes from Linkwitz's website I didn't buy the construction package.
Cheers.
Attachments
re: the next step: it would be interesting to know how the omnidirectional bass/lower mid should be sized relative to the full range top. SL seems to have given a smaller driver a lot of boost via miniDsp. maybe a bigger driver on top of a sonotube would have done better? please continue sharing.
So far I set the midrange boost of 5-6dB(similar to SL) low shelf set at 750Hz, I need to do more testing via measurements and listening.
The Linkwitz LXMini has a response curve that goes from omni in the low to cardioid in the high. The cardioid radiation is achieved by absorbing the rear wave. One thing I don't like about the LXMini is the frequency response. There's a lot of sharp edges on this speaker, and sharp edges create peaks and dips in the response via diffraction.
The Beolab 5 has a response curve that goes from omni in the low to cardioid in the high. The cardioid radiation is achieved by diffusing the rear wave. One thing I like about the Beolab 5 is the frequency response. It's smooth because B&O understood that diffraction is the enemy.
Linkwitz disputes that diffraction is a problem: Diffraction from baffle edges
". I am not aware of any scientific study as to the audible effects of diffraction, but since it adds ripples to the steady-state frequency response of a loudspeaker, especially for symmetrical driver layouts, there are many claims to its detrimental effects. "
B&O accepts that it is: B&O Tech: Curves are Better than Corners earfluff and eyecandy
"For example, if you look carefully at the “plates” of the BeoLab 5 and the prototype in Figure 4 (the part the tweeter and midrange drivers are mounted in), you might notice that the prototype plates are flat, whereas the BeoLab 5 plates curve downwards. This is not because someone thought the curve would look pretty. This was because the circular edge of the prototype plates also caused diffraction, resulting in a higher-level lobe in the vertical plane. Sloping the plates downwards puts their sharp edges in the “shadow” of the plates themselves, reducing the diffraction effects. So, you can see that diffraction and its effects on directivity is one of the other issues that we worry about when we’re building a loudspeaker."
Funny thing about diffraction. I remember examining the circular plate that
Terry Cain used on the Abby loudspeaker. The FE166 driver he was using
has a 4 Khz peak which is a bit of a problem, and with the plate you see a
comb filter situated in the same zone.
Looks awful, but sounds better. I believe Terry achieved this using only
listening tests and experimentation.
😎
Terry Cain used on the Abby loudspeaker. The FE166 driver he was using
has a 4 Khz peak which is a bit of a problem, and with the plate you see a
comb filter situated in the same zone.
Looks awful, but sounds better. I believe Terry achieved this using only
listening tests and experimentation.
😎
Attachments
Way cool! Terry used to come around to the little DIY shows that Dan Wiggins would throw. RIP 🙁
Circular radiator in circular baffle, concentrically is the worst scenario, above diffraction first null! As a dipole one should never let them go up there! However the ears are not as sensitive to this combing as a measurement mic.
http://www.mellowacoustics.com/articles/Disk_in_a_circular_baffle.pdf
And Linkwitz knows this very well! Electro-acoustic models
http://www.mellowacoustics.com/articles/Disk_in_a_circular_baffle.pdf
And Linkwitz knows this very well! Electro-acoustic models
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Can anybody comment on how suitable the ScanSpeak 10F would be as a replacement for the Seas driver? (I have some of the 10F, but not any of the "CURV" cone drivers)
Because... It wouldn't be a blind test anymore. You reached, what is to me, an obvious conclusion. The superior sounding speakers are often not the winners in non-blind tests 🙂
Because... It wouldn't be a blind test anymore. You reached, what is to me, an obvious conclusion. The superior sounding speakers are often not the winners in non-blind tests 🙂
I found if you mount the FR driver your way the frequency response will be different if the driver is mounted 2-3 inches away from the circular mount. The sound will be different too.
Hi TTan, how different? The 'roadkill' was just cobbled together with junk I had lying around, the 'omni' woofers from side-of-the-road Akai speakers, the front firing driver a Sanyo "FR" from a boombox. Xover is a 47uf cap, all I had lying around; sound is "revealing" i.e. no bass ... (The Sanyo driver is too efficient, needs to be padded down) hit the loudness switch & wind up the bass controls , not too bad, Horn sections (Louis Jordan ) sound amazing, however Rammstein sounds better on my BR cabs... 'specially after a few lagers....
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