Have not found evidence to the contrary, as I don't see a coaxial model that can go to 120dB or more.Ģ.
#Kef replacement speakers for qx one driver
Genelec Emails: On massive models, a coaxial driver cannot handle the SPLs their main monitors can. What are some of the inherent performance disadvantages? (IE: Not price, having to design it right, etc.)Ī few potential disadvantages I've heard of:ġ. "One of the benefits of a coaxial driver is." "The coaxial driver looks great and caters to audiophile intuition of "point source being good."" Is this intuition incorrect? Please make me feel better by donating money using : Makes me depressed that I must have lost by great and young looks! Anyway, I always walk away depressed. Why? Because they have a 10% discount for "seniors" and they always ask me if I am old enough to qualify. Hate going to the local grocery store on Tuesdays. Look forward to testing their current production models.Īs always, questions, comments, recommendations, etc. Measurements are not horrible but they lack the evenness that we need to see in on-axis measurements. I think the famous reputation Q100 has more to do with its great looks than sound. This was in near-field listening because obviously I could not reach with my hand 10 feet. That nicely lowered the bass boominess and seemed to reduce the distortion I was hearing. For testing, I just stuck my hand in the port. I believe a port plug comes with the speaker. There was also some distortion which seemed to be constant throughout everything I played. There was a general lack of evenness response with some notes forward, some not. The location causes some of that but seems to be exaggerated here. I used the KEF Q100 in my main system, playing in mono (provides best discrimination). It is just an interesting thing to analyze nevertheless. Note that the bandwidth ("ERB") of the notch is too small to be that audible. So it looks like it is a longitudinal mode of the internal cabinet coming out the port causing that partial cancellation. If we convert that to wavelength we get nearly 12 inches which happens to be the height of the cabinet. Something coming out of that port is combing with the main driver and causing cancellation in the middle (to some extent). We see that there is a strong sound source below it which has to be the port. The "nref" arrow is the center of the coaxial driver as you would look into it. This so called spinorama shows us just about everything we need to know about the speaker with respect to tonality and some flaws: Final database of measurements and data is 1.2 Gigabytes in size.Īcoustic measurements can be grouped in a way that can be perceptually analyzed to determine how good a speaker can be used. After that error climbs to 2% which should not be material. Over 700 points around the speaker were measured (from 20 to 20 kHz) which resulted in well under 1% error in identification of the sound field up to 16.5 kHz. Frequency resolution is 0.7 Hz (yes, less than 1 Hz) and plots are at 20 points/octave. In a nutshell, the measurements show the actual sound coming out of the speaker independent of the room.Īll measurements are reference to tweeter axis with the grill removed. Both of these factors enable testing in ordinary rooms yet results that can be more accurate than anechoic chamber. It also measures the speaker at close distance ("near-field") which sharply reduces the impact of room noise. This is a robotic measurement system that analyzes the speaker all around and is able (using advanced mathematics and dual scan) to subtract room reflections (so where I measure it doesn't matter). Measurements that you are about to see were performed using the Klippel Near-field Scanner (NFS). Or disconnect them if you want to bi-wire wire/bi-amp them. Turns out they are just shunting knobs that short the highs and lows together. I thought those two knobs were level controls which is surprising in a passive speaker.
0 kommentar(er)
