We once calculated that my speakers have about 400 in.² greater radiating area then do yours. Perhaps that’s where our results differ, because my speakers are not perceptibly distorting in anyway at 100 Hz. And there is the added value of coherence and continuity with higher frequency music. Now you are saying there is no point in reproducing music below 40 Hz, because there is not much information. Isn’t that contrary to your previous assertions about your system going down to 15 Hz or thereabouts? Why do you bother to be concerned about frequencies below 40 Hz, if they are irrelevant? I say this Not as someone who believes that frequencies below 40 Hz are irrelevant.
System that sounds so real it is easy to mistaken it is not live
My current stereo system consists of Oracle turntable with SME IV tonearm, Dynavector XV cartridge feeding Manley Steelhead and two Snappers monoblocks running 15" Tannoy Super Gold Monitors. Half of vinyl records are 45 RMP and were purchased new from Blue Note, AP, MoFI, IMPEX and some others. While some records play better than others none of them make my system sound as good as a live band I happened to see yesterday right on a street. The musicians played at the front of outdoor restaurant. There was a bass guitar, a drummer, a keyboard and a singer. The electric bass guitar was connected to some portable floor speaker and drums were not amplified. The sound of this live music, the sharpness and punch of it, the sound of real drums, the cymbals, the deepness, thunder-like sound of bass guitar coming from probably $500 dollars speaker was simply mind blowing. There is a lot of audiophile gear out there. Some sound better than others. Have you ever listened to a stereo system that produced a sound that would make you believe it was a real live music or live band performance at front of you?
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I remember a blind test in the 80s where blindfolded listeners compared live performances with recordings of the same music in the same space. The results were strong; most listeners were able to distinguish easily and reliably. Even $1,000,000 systems have a long way to go. These tests should be repeated. It is also easy to run blind tests of components. Set up two identical complete systems in the same space. Insert the two components to be tested in the systems. Play the same recordings A B X, where blindfolded listeners are to identify X as A or B. Repeat say 10 times. Score the number of successes against the probability of the result being chance. For sticklers re-run the test with the common system components swapped out. Golden ears should be very afraid, but these tests should be run to establish whether they have any worthwhile credentials.
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Dear @mijostyn : " The surrounds corroded and they literally fell apart. I can not quote you figures but I do know that given appropriately large drivers in well constructed sealed enclosures distortion levels are easily under 0.5%. It is only when using smaller drivers in flimsy enclosures that distortion becomes a problem. An amplifier that has tight control over the driver like the JC 1s with their damping factor over 1000 will result in excellent performance far in excess of what any Class D plate amplifier can provide assuming a large driver in a well constructed enclosure of which there are very few. The Velodyns do not qualify as a well constructed enclosure. No commercial subwoofer excepting the Magico Q series qualifies. "
Which Velodyne you own for 10 years?, mines I think has even more with no single problem " the surrounds corroded.
" I do know that given appropriately large drivers in well constructed sealed enclosures distortion levels are easily under 0.5%. "
I disagree with you till you,please , share 2-3 names where that is happening. In the case of my Velodyne what permits that the THD be as low as 0.5% is that as I posted Velodyne is monitoring the woofer excursions over 16K times each second. My velodyne is self powered by a class D amplifier, here some specs: """"
Amplifier: Class D 1250 Wrms (3000 W peak)
As I posted my units position are not firing directly to the seta position and not between the main speakers but side firing in between seated at 15cm.-20cm. from the floor just in front of each speaker and have in the top plate a a 40kg. dead weigth. The subwoofers were modified in its amps, input electronics and the woofers rewired with KK KCAG cable. I'm so demanding in my system that when we analized the input electronics not only modied but we took in count that the shortest signal path is not at its RCA input but to the balnace input and where are connected. By a " detail " on something similar my ML 20.6 modified monobloks are connected directly to the amps mother board inputs not in the balanced way but in the shortes path: single ended.
Btw, the Velodyne construction makes its job, at least my now " vintage "units.
"" When dealing with a dynamic speakers it will only be the range of the woofer that is cleaned up. ""
Not really because when you cleaned up the woofers ( as in my ADS high pass filter ) and lowers its IMD then the mid-range and high frequencies really shines as never before due that the woofers " dirty " harmonics already gone ! ! and this is the main issue about.
Only Magico, really? Today there are several good options and in the past I had the opportunity tolisten the Krells subs self powered by Krell special dedicated class A amps and listened to the Wilson Audio. Both great units. Btw, thank's for your offer but rigth now I'm fine about.
I forgot to mention that with and with out subs the top SL are a little " short " in its overall quality lwevel than my ADS system TYhe best planar speakers other than SL were the Apogge and inside its line the Scintilla, Magnepan middle line with subs. For me Ribbon are a little better than electrostatic designs.
I return my subs to 80hz crossover, 95 hz just does not works for me.
R. |
My system sounds live and spooky real depending on the recording. I think I can push it to live most of the time rather than some of the time with adding BACCH to my system this spring. I know live music, my dad practiced grand piano 3 hours a day as a kid and he put on a number of 2 hour concerts consisting of any classical artist you can think of. I also played bassoon second chair in the Wisconsin Youth Symphony. That’s why I pursued this hobby. As mentioned above I do run my mains full range and supplement with 4 subwoofers. The system is all active with no passive components. I have 12 biquad filters created with an Earthworks microphone measuring 30K-30KHz in conjunction with Room EQ Wizard and Multi Sub Optimizer. I’ve had more than one person brought to tears listening to their favorite piece. I’d say that is confirmation that it is a live like performance if it can elicit that kind of emotional response. I’ve heard this before on another system that was highly directional, Sadurni Acoustics Horns, but the image was only wide enough for one person and it was ruined if you moved your head more than a few inches. Thanks, Steve |
Dear @hifidream : Sadurni Acoustics Horns? what small is the world.
Things are that J.Sadurdi ( designer and manufacturer ) is a close friend of mine and he was living here in México for almost all his life till the last 4-5 years that he gone to USA and now ives in Austin, TX.
At the began of his " hron adventure " I was helping for months/years in the voicing of several prototypes. Today his designs are just great.
Btw, where do you experienced the Sadurni speakers?
Thank’s in advance.
R.
This could be a " way experience " to live it:
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