Widzisz firmowe pomiary DD66000 aż do 50kHz - które to spokojnie przekraczają. Tam jest wszystko podane czarno na białym bez żadnych sekretów - bo to nie garażowa firma aby robić sobie lipę, i każdy o tym wie.
Rosyjskie już widziałeś, prawie identyko jak oryginalne.
Jeszcze Angielskie laboratorium o którym możesz sobie poczytać w recenzji Paul\'a Messenger\'a z HI-FI Choice:
http://www.jblsynthesis.com/downloads/products/prod_92_634480739469487570_Everest%20HFC%20Article%204%2010.pdf...i co Lancaster, teraz łyso Tobie, bo u Paul\'a Messenger\'a odpowiedź częstotliwościowa w zakresie od 300Hz do 10kHz mieściła się w przedziale +/-1.5dB! Jedynie bas im podbiło, bo angole wcisnęli paki w pipidówę, i tyle:
The ultimate top end
\'\'The speakers were positioned with normal left/right separation and as far from the rear wall as possible without blocking the doorway. Although a little closer to the wall than might have been desirable, I doubt it was much of a compromise, and the weight and bulk rendered further exploration impossible.
There was a bit too much bass when measured under our usual far-field, in-room averaged conditions, but around six decibels below 250Hz didn\'t seem too excessive. However, what was totally impressive was the remarkably flat and even tonal balance further up: the response from 300Hz all the way up to 10kHz was held within remarkably tight +/-1.5 decibel limits. The ultimate top end roll-off was mildly marred by a small 17kHz spike.
Not unexpectedly, sensitivity is generous, especially below 300Hz, if not quite as high as the specified 96 decibels above 300Hz. Furthermore, it\'s achieved alongside a fairly easy amplifier load, which stays between six and eight ohms over most of the range, only falling below five ohms at ultrasonic frequencies. The pair match was very close indeed and the ports are tuned to a relatively low 28Hz, ensuring good response down to 20Hz (at 92 decibel sensitivity under our in-room conditions).\'\'
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\'\'James B. Lansing\'\' = Lansing Manufacturing ~ Altec Lansing ~ JBL...\'\'Hear the Truth\'\'
