A very good Lowther design that emerged.... (News)

by Bert , Saturday, September 29, 2007, 00:45 (6075 days ago) @ anubisgrau

Thanks for the elobaration...

one of the sale points is there are no any passive elements within the
cabinet and they clain all the tricks are pure acoustics. a designer is
especially proud that he minimized a number of elements between the CD and
the listener in his room to only seven, the last change being putting
lundahl transformers as interstage coupling instead of capacitors into his
300b. it's quite obvious he is into simplicity. at the end of the day,
anyone can open them and see what is inside.

Yes, simplicity is good (!) but the connected system also makes the speakers sound as they do. Perhaps GC can bring the CrazyA's to have a listen with these also, then you will hear what the speakers are doing for real without the "boosting" effectcs from amps sensitive to impedance changes....

I can imagine the impedance peaks due to the internal resonators helping the bass a lot this way.

i think that the trick is done not only with playing with TQWT but with
the helmholz resonators in the first place. from what i remember they
should be a kind of a resonant box with a tunnel in it, a kind of a bass
reflex box that if placed correctly within the horn (or whatever it is
called in this case), can enhance the bass and smooth up rough edges of
the soundwave. there are two resonators within each box. how they manage
to avoid any cancellations and similar, including phase confusion between
the radiated wave and the one that comes from inside of the box, is
absolutely beyond my understanding. but i am quite confident that the

With ports and resonators it is possible to extend the deeper bass and to cancel standing waves or resonances somewhat (the Singular is using the same principle). Most bass heard comes from the tubies though.... last week I had a nice OTL tube amp here from a customer who wanted to hear his amps on my Swings. I had to turn down the bass with 3-5dB to bring back the balance!

Not to drag down the system, I am sure it sounds more than okay but showing inaccurate data trying to sell more is not my style. On the other hand, I can not blame him as most people have no clue or no ears attached to their head and need good figures to make them feel comfortable (or simply pay a lot so that it MUST be good!). Pittyful but often true..

Bert

--
BD-Design - Only the Best!

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