Nothing is perfect.
Not below. Above maybe. XO is at least an octave below the omni point and the passive is 4th order acoustic so there will be little.
More effects likely from the shape of the baffle.
dave
Not below. Above maybe. XO is at least an octave below the omni point and the passive is 4th order acoustic so there will be little.
More effects likely from the shape of the baffle.
dave
You confuse the ability to hear vertical direction with what we hear in the reverberant field of a living room.
You don't hear the "cue" from the ceiling reflection, it's just "smearing" the image and the frequency responses add up (until you have a very high ceiling).
Found a good video/audio with some natural recorded stuff and some recording tech explained:
Also nice - but this stuff sounds great even with a kitchen radio:
And given the smallest room dimension is very likely the ceiling height then this is where most offending reflections will come from. Including coloration, comb filtering,... as outcome.
So i would not say vertical directivity doesn't matter. Rather the opposite in fact.
So i would not say vertical directivity doesn't matter. Rather the opposite in fact.
I agree that ceiling reflection are just smearing. I do not dispute that. But thats not what i was saying at all. You are confusing what i was saying about importance of horizontal constant or at least uniform directionality.
I was just saying that horizontal, these parameters are critical. For vertical i said they are not critical. This claim however does not mean that i urge people to have ceiling reflections. That's your construct.
No it's not. At least not always.
https://www.xlrtechs.com/dbkeele.co...ear Phase Digital Crossover Flters Part 2.pdf
Fig3 is worth investigating.
The Snell model Dave linked didn't have issue in vertical directivity either: it was one of Dave Smith's target in the developement of this loudspeaker. He explained it and how he managed in a thread in here ( about line array theory).
And room / listening condition can influence rendering in a way it makes potential vertical issue in mtm moot:
Non environement room ive been in used Kinoshita's Rm-7 ( D'appolito variation of Kino's range) and coupled to the room gave same effect as being in nearfield from mains ( 3/4 meters away): any issue is stamped by direct sound.
Some people dislike the 'giant headphone' effect it brings though.
Like Dave i'm lucky enough to have sloped ceiling ( 45*) and it's a real blessing imho: redirection of ceiling's ER outside listening spot make a huge difference.
Like Iamjf i don't get your comment on vertical discerning ability of human brain even if i agree with reasons you exposed about evolution and why we are more sensible to lateral than vertical. Anyway, any height information from stereo setup comes from acoustic anomally or triggering of memories.
Only 'triangulated' system could render height infos.
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For good reason imho.
But for the one i've heard ( SC4 iirc, the one with 12" woofers) you had to be located at sweetspot for them to sound at their best. And it wasn't large.
I wasn't able to define if it was because of the room, loudspeakers or both when i heard them and owner didn't know either ( and didn't care as it was a control room where he didn't moved away from sweetspot when working anyway).
Dunlavy designed for a given distance and on axis listening ( not to ruin time alignement and for drivers pair summation) so it might have been from loudspeakers mainly.
Reminded me of same experience than when i heard control room using redirecting rather than absorbing for RFZ: there was a more obvious spot were 'quality' increased vs other spot in room.
I doubt it was 'better' than using absorbing material but the contrast ( to other non optimal location) was more easily heard and seemed 'greater'. Same effect appeared with Dunlavy's and probably not to everyone taste.
\Marveloudio
Can you PM me please? I'd like to talk with you about old KEF T52 tweeters. It appears that you have some experience disassembling them? Tnx. Andrew
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I have both of these CDs. Honestly, they're just average recordings and sound decent. I wouldn't use them to dial in or voice a speaker. That's due to the mostly over-hyped bass and treble. Chesky has a good reputation among audiophiles and they're good at direct to disc productions. The music isn't really something I'd listen to for sheer enjoyment.
If you want to hear a great vocal and choir recording, look up the title "Cantate Domino" from Proprius records. Its likely one of the best analog vocal recordings I've ever heard. It was recorded on an old 2 track Revox A77 with 2 Pearl mics back in 1976. I have this on vinyl, CD and SACD.
"Jazz at the Pawnshop" is another great record put out by Proprius. This one sounds best on the first original vinyl pressing.
To the OP regarding the MTM arranged mid domes, you can greatly reduce the bad combing effects by using the 1.2x WL CTC spacing formula. Once you have some distance to the speakers, the effects of combing diminish considerably.
2" domes plus the mounting Bessel / magnets center to center will be same or worse as 5 1/2" or 6.5" mid
waste of time. Just use a large mid if worried about low end.
The domes have higher sensitivity and allow a very small tweeter as a single.
People love to bash Dayton cause they beat every ones price range and the aluminum domes sound fine
and distortion is low, with crossover ( of course) even better . Full of it. Hivi has higher prices and they breakup more. nonsense
The lower cost domes from HiVi have no frequency data, because they are even worse for breakup.
Heard the Daytons and seen data from 2.8 to 8 volts. Better than many woofers with more power to match the sensitivity.
Typical Dayton stuff cause they beat everyone on price range.
waste of time. Just use a large mid if worried about low end.
The domes have higher sensitivity and allow a very small tweeter as a single.
People love to bash Dayton cause they beat every ones price range and the aluminum domes sound fine
and distortion is low, with crossover ( of course) even better . Full of it. Hivi has higher prices and they breakup more. nonsense
The lower cost domes from HiVi have no frequency data, because they are even worse for breakup.
Heard the Daytons and seen data from 2.8 to 8 volts. Better than many woofers with more power to match the sensitivity.
Typical Dayton stuff cause they beat everyone on price range.