Recent content by jackocleebrown

Thanks! Whoops, I forgot the R300 - it is the same Uni-Q as the R500/R700/R900. Kind regards, Jack.

Yes, I agree completely. I did not mean to contradict you, only to clarify that the Uni-Qs of today have evolved quite a lot compared to the first. Kind regards, Jack.

Dear hg, Thanks for your curiosity. You'll note that I specifically said "believe I have heard a difference" I'm not ruling out expectation bias, or even perhaps some dodgy equipment. I've not done any specific study and certainly not any AB (or any other kind of statistically significant)...

Just wanted to say, yes this is correct - I think the quote above was something I posted on another forum (quite a while ago now) when asked a similar question. Vladimir, you're right that in a sense the Uni-Q drivers are a contiunous lineage right from the early ones of the Jones/Fincham era...

Sorry for jumping back a few posts, just wanted to reply to this question(s) above from shkumar4963. When we were working on the LS50 balance we used the Electrocompanient Nemo system as a reference. From memory, at the time we had the Arcam A38 and Leema Elements Integrated on hand as popular...

You're right, those two features are more or less obvious :D. I mentioned them in particular because they are key in reducing modulation of the HF by movement of the MF cone. (Incidentally, I was talking about the MF surround itself rather than the smooth trim ring, like the surround on the LS50...

Hi shkumar4963, THD is quite a poor guide to the audibility of distortion. A typical loudspeaker generates mostly second and third harmonic distortion, typically highest in the bass region. This type of distortion is relatively quite benign (although we would obviously prefer not to have it). A...

Hi Steve, Thanks! I'm sure you'll understand that I can't really comment on future product plans. I guess that what I can say is that technically an active approach can give some benefits and if we feel are enough potential customers out there then we'll develop more. There are some...

Hi lindsayt, I can only comment from my perspective working on the design side. During our day to day work we are looking for shortcomings in our existing designs and finding solutions. Generally we are doing this in a predominantly objective way, finding problems in the measured behaviour...

Hi shkumar4963, I only really covered the main changes to the acoustical design, you're right there are quite a few other siginificant improvements that I could have mentioned. Room correction has great potential. There are a couple of issues. Firstly the room is a 3D soundfield whereas the...

Hi Freddy, The LS50 and R300 are quite different designs. Firstly the R300s are significantly larger than the LS50 but they are roughly the same sensitivity. This allows the R300 to have considerably more bass extension. Indeed, they almost have as much bass extension as the R500s. The...

Hi shkumar4963, That is an interesting question. Fundamentally we are still dealing with the same underlying technology and the same physical limits on what is possible. The main physical limit that we are up against when designing a loudspeaker is that to efficiently produce bass requires a...

Hi Vladimir,<br>I can only really comment fully on the engineering side, not the product planning or marketing but I can give you a little bit of an idea of how the LS50 came about. I believe that our chairman was the first to put forward to idea to produce a 50th anniversary celebration model...

The effect in the curves is normally know as the diffraction effect. The frequency that you get the ripples on the response depend on the enclosure dimensions. For a very samll enclosure, like a pod tweeter, the ripples are at high frequencies. For a typical speaker width of around 20cm the...

Awesome, that is a pretty neat feature.