With the Purifi soft parts/suspensions innovations, I think the best midrange will be the 4" variety.
I'm waiting to see if Lars and Carsten will release a pure 4" concave cone midrange.
The dispersion will be as good, or better, than the almost 50 years 3" ATC convex dome. It will be able to play lower than 350Hz, and higher than 3KHz, and louder (and cleaner).
A 3 way that can do what only 4 ways could previously do.
As for joining ASR, think of the opportunities.
If you join ASR you'll be learning diplomacy.
Like how NOT to say things to criticize, complain or correct people.
A problem with all many of these pure objectivist websites is that the leader, and many followers think that a few (or few dozen) graphs explain everything.
Or worse, they don't know, what they don't know.
It's clear that not everyone has a growth mindset. I think the agenda of ASR is "get viewership/membership as fast as possible, monetize later"
Now If I get banned shortly, you'll know why.
But Jim, I think you'd be ok on ASR.
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There is no need to censure your opinion, getting banned does require active participation in the endeavour. The trick is to read more than posting and treat it like swimming in the ocean, avoid dawn and dusk and when the waters have been chummed 🙂
Alan withdrew himself after getting very hot under to collar, and if you read kimmo's posts you will see he hit his head pretty hard against a brick wall.
I don't agree with banning people or censuring their posts unless they are offensive this is only audio after all.
yes, but …
also yes, this is my experience too.
Or translated into the spinorama model, while DI and sound power are coupled, they are only so on the specific relation that a certain speaker construction shows of on-axis/LW to sound power.
Put another way, the sloping of the sound power due to speaker construction/driver radiation pattern cannot simply be corrected by manipulating the direct sound with a slope/shelving filter. The audible result will be different.
I was probably being overly dramatic... the truth is I am being a bit lazy... I have a hard time keeping up with just this website. But I think you and tktran have pushed me off the fence... Funny you mentioned swimming, the last time I swam in the ocean was at Newcastle NSW, when I was doing some work for the RAAF.... Not sure where are down there?
Were you involved in the Directiva R2 as one of the design team? I did not locate the post which identified the members. It is impressive, especially the simulation that went into optimizing the baffle and the cardioid side vents.
When it is released, I will look closely at it. My current modular system somewhat locks me into a woofer-mid crossover in the 200 Hz region. So a 5" driver is probably as small as I can go. And with the availability of tweeters like the Bliesma T34 series and the Satori TW29BNWG makes it easy to cross from mid to tweeter in the 1.5 - 2k range, so a 5" or 6" mid driver is not hard to work with.
Eventually I do want to build a 4 way active system, using my woofer cabinets as true subwoofers. Satori WO24P from 100 to 500, perhaps a Bliesma M74B from 500 to ~ 2.5k, then maybe a T25B in a waveguide, or the Satori TW29BNWG... just noodling ideas at this point. I would need to buy another Hypex amp. But the 4" Purifi mid would definitely be an option. But I have at least 2 projects ahead of me before I start thinking about a 4-way system.
j.
I was explaining how the sloping sound power comes to be in a speaker, nothing else, so I'm not sure why there is a but...
All Directivity Indices are calculated by taking away a measurement (from a collection of off axis angles) from something resembling a direct sound measurement, which were used determines the name of the DI curve.
This isn't putting it another way, there is nothing to correct, the sloping sound power is not wrong, it is just the consequence of the speaker directivity.
It's also one of the points being made. You can't change this with EQ, you can't make it balance out the same as other speakers, you can only compensate.
Plenty of sharks off Newcastle
I live on the Gold Coast if that was your question.
No, ctrl does the simulations (very well I might add), Rick has too many, lists, anacronyms, and restrictions for me 🙂
And sadly, not enough off Byron.
My condolences.
My business partner is just north of BrisVegas, and I'll soon be about 2hrs south of the GC.
I don't disagree but nowhere did I say anything different either, if you or anyone thinks I did you have misunderstood me or I was not clear.
probably don't like the dreadlocks and incenseIt OK at home I am effectively in the bush but still only ten minutes from the beach, a compromise I can live with.
I think one taste tested one of the cast of Byron Baes and spat them out
I like the GC as somewhere to visit, but I wouldn't want to live in the main strip area. My partner is going to move into the hills soon and get some acreage.
I'm in a very small village, not on the beach, but there's nothing between me and the water except a couple of hundred m of national park.
It was not meant as an opposition, only as an addition, scrutinizing a certain recipe.
It was often pointed out that with controlled directivity speakers, which feature a wide HF radiation pattern, sloping the on-axis response could mitigate a brighter presentation. I came to the conclusion this is not as easily done, as with controlled directivity speakers, there is a different ratio of LW to SP, as i. e. with a three-way speaker. And we cannot change this very different behaviour, which is burnt into the speaker's signature.
That was all I wanted to point at.
I agree which is why I live in the Hinterland and drive half an hour to work.
Sure, there are many ways to try and get to a good sounding balance some more successful or practical than others. If you look at Erin's review of the Dutch 8C you can see that there doesn't have to be all that much slope.
Listening window to sound power,
.. in some instances the listening axis would be a more reasonable data point than the listening window, which is a spinorama construct which I have noticed gets a little out of context sometimes.
.. in some instances the listening axis would be a more reasonable data point than the listening window, which is a spinorama construct which I have noticed gets a little out of context sometimes.
Thanks, still i am struggling to grasp the meaning. Listening window is a small 'portion' of radiated sound , how does that relate to sound power? Also the relation with a 3-way?
Extract from CTA2034
Listening Window
The listening window curve is a spatial average of the nine magnitude responses in the ±10º vertical and ±30º horizontal angular range.
• 0°
• ± 10º vertical
• ± 10º, ± 20º, ± 30º horizontal
Sound Power
The sound power is the weighted rms average of all 70 measurements, with individual measurements weighted according to the portion of the spherical surface that they represent. Calculation of the sound power curve begins with a conversion from SPL to pressure, a scalar magnitude. The individual measures of sound pressure are then weighted according to the values shown in Appendix C and an energy average (rms) is calculated using the weighted values. The final average is converted to SPL.
sheeple will have to explain what he means about the 3 way as it makes no sense to me either.