I have 5 unusual styles Speakers… The Sealed Box Continentals are actually on 27" high stands. The 18" high Tulip stands while having mass WAF approval. are too low IMHO.
Hey, give Dr. Toole a break !
Didn’t need to, …he went on his own after Harman…
I always kinda liked their mid-century modern vibe, though.
wait …thats grey? NOT piano black?
I believe that the Infinity Compositions Prelude speakers were a Laurie Fincham design. I had the pleasure to work on a project with Laurie (formerly the technical director at KEF and later the VP of Engineering at THX) and he was one of the technically brightest an quick witted men in this business.
Also, Owen Jones (Andrew Jones’ twin brother) I believe designed the amplifier design in the Prelude.
What, he has a twin brother! So that’s how he does it all
Do Dr Toole’s & Sean Olive’s research guide your design and objective performance goals?
And can you share horizontal & vertical directivity measurements, even if just preliminary?
Are these important measurements that you focus on trying to maximise (smooth frequency response at widest angle as possible)? Among other things of course
I certainly enjoyed PLHart’s design of the Infinity Beta 50’s…a trickle down of Dr.Tooles’ work.
PLHart posted on AVS Infinity Beta bang for the buck plus another Infinity Beta owners
thread.He shared his design expereinces and had to work with a max bill of materials…
while the Revel F-12 concerta (cousin to Beta50) had larger budget. But as PLHart reports
it was his Beta subwoofer that bested the Revel design…you can find all that in those threads
The Beta 50s were very well thought of…
So Patrick if you happen to come by this thank you and kudos…
googoogjob,
Did you see this picture? I forget who made it…someone from this thread. This picture made me really rethink the design of the FR-30. I like the different look now. It think it helps to picture it integrated into a system instead of just sitting alone by itself.
See below:
hmmmmm. i might have moved 1/16th of an inch closer.
whats the speaker on the left?
is that an SVS sub i see hiding?
Yes. Dr. Toole’s life’s work is nicely summarized in his book “Sound Reproduction” and he is such a lucid teacher than he makes the material very approachable for people of all levels to understand. I think that all modern speaker designers owe a lot to their work at the NRC etc…
However, keep in mind that there is still a lot of discretion on the part of a designer in the approach as to overall directivity (even within the constraints of their guidelines). A lot of the art and the craft is understand how to make the inevitable compromises and where to place budget and emphasis.
I do like their way of presenting so much useful data in a single chart, as they do with their spinerama approach - (now CTA-2034).
I wish that there was more work done on the distortion aspect of loudspeakers, as they don’t have a perceptual distortion model to go along with the work that they’ve done with speaker/headphone tonality and listener preference. There has been work by folks like Earl Geddes, Wolgang Klippel, Alex Voishvillo etc. but it doesn’t track well above a certain threshold of acceptability and so has more limited application in the best hifi systems.
I do find that Sean work into taking all of their work and putting it into a single metric rather reductionist, but I understand why he did it.
Toole’s a tool, Chris.
Sonist Audio Concerto 4 Speaker on the left.
Yes, there are 2 SVS SB3000’s in the photo.
Talk about hiding, there are M700 monoblocks behind the lower tv.
And I do have a large cushion that covers a good portion of the upper tv when listening to music.
The FR-30, I believe is not 100% perfectly scaled. Am thinking in reality they are smaller than they appear. Larger than the Sonist speaker, but not quite as big as photoshopped here.
I’m reading it right now. In Chapter 5 at the moment.
Stop picking on us Canadian’s Eh !
Rajugsw
No one is picking on Dr. Toole or Canadians…
simply iterating the great contributions Dr Toole has
through much dedication and work has benefited
the industry …I certainly have enjoyed trickle down
technology he developed whlle at Harman…
I know…I’m just messin’ with ya
Joe
Me tot so… just checkin’
It is my understanding that the FR 30 will feature DSP.
Please let me know (Chris) how this is implemented and if is full range or only dedicated to the frequencies controlled by the woofer/amp system.
I have a nasty room boom that is the 2OO Hz area and
bass traps do some good but it is still there.