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Posted by Romy the Cat on
04-17-2011
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fiogf49gjkf0d Audio people are so accustomed with a comfortable believe that as frequency drops the stereo information becomes less important that no one seems question this old believe. The reality is very much do not support this. From what I can observe the stereo information live in sound down to lowers frequency, you just need to know what to listen to “get” it.
I am ruining now my ULF channels at 20Hz with 3rd order- you understand that my ULF produce only very lowers bass. So, flipping the signal from mono to stereo and reversing the channels do produces very notable difference. What you listen my playback with mono bass then I have less complexity in Sound and Sound feel like a large wall with ornamentations. With Stereo bass the wall is replaced with animated and constantly changing fields, the clouds of Sound. Also, the “clouds” in stereo mode has capacity to softer right and left instruments of orchestra with different force. So, say no to mono LF section regardless what kind topology and type you use. Remember, there are very few rules that you do not want to screw with: your LF much not be between your MF and your LF much not be mono.
Rgs,
Romy the Cat
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Posted by ArmAlex on
04-19-2011
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fiogf49gjkf0d Dear Romy,Most of audiophiles listen to ported bass so there is no info left in LF to worry about.Best regards,Armen
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Posted by Scott L on
12-19-2015
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fiogf49gjkf0d  ArmAlex wrote: | | Dear Romy,Most of audiophiles listen to ported bass so there is no info left in LF to worry about.Best regards,Armen |
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Once again the misconception that any or all ported bass is evil and must be eliminated. This is simply not true. What is true, however, is that many or most all ported (vented) woofer systems have been done incorrectly.
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Posted by Romy the Cat on
12-19-2015
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fiogf49gjkf0d | Scott L wrote: |
Once again the misconception that any or all ported bass is evil and must be eliminated. This is simply not true. What is true, however, is that many or most all ported (vented) woofer systems have been done incorrectly.
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Scott, would you be kind to name a loudspeaker where is ported bass made properly from your point of view?
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Posted by decoud on
12-19-2015
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fiogf49gjkf0d That is given in the psychophysics: binaural phase offset sensitivity goes up with wavelength.
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Posted by Scott L on
12-19-2015
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fiogf49gjkf0d | Scott L wrote: | | I had to take
pause before I answered here; realizing in an almost shocking manner [that] I
don't listen to many commercial loudspeakers.
I am largely involved in the (gasp) DIY
community, where it's also very often done incorrectly. My last very
satisfactory retail loudspeaker experience was that of a B&W Matrix
801. Commercial audio peoples and audiophiles alike, tend to draw carved-in-stone
conclusions from a very limited exposure, or experience. For example,
"I hate horns". Yes, because person (Mr. A) once listened to one or
two gawd awful horns and therefor concludes ALL horns must therefor[also] be
awful. With respect to ported verses sealed systems, ported are indeed more
challenging to get correct; being lazy about
paying attention to design/and/ construction details may easily lead to
disaster. I should also include my finding here with experience in muti-way
systems. A sub-woofer section may indeed be sealed, or vented; but I have
obtained the very best results with a mid-bass section being sealed, where
blended with either a vented, or, sealed sub bass. Never, ever in a billion
years should there be an attempt on sub-woofing with an open baffle. Infinite
baffle? Oh yes, but never an open baffle. |
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Scott, I understand where you are coming from. I
was asking about commercial speakers because it is easy to find a common
denominator when we TALK about. I do have in my mine a few models that I feel
done more or less acceptable if they are driven with current-capable amplification.
Still, they are acceptable to a point, to a point of reference….
I do not what is done better in DIY world. My
personal DIY experience with ported bass was disasters but I was very little
informed what I was doing. It is possible that you are right and proper DIY might
breed something that best commercial loudspeakers can’t reach. I personally do
not think so. The problem (as I see it) with port is not in the “paying [low] attention
to design/and/ construction details” but rather a fundamental fault that factor
into the idea of ported bass. I can describe it again (I did it somewhere
before) but it is not the thread about ported bass.
I truly do not need to argue about it. If you
feel that you with your practice have overridden everything that you do not
like about ported bass then my salute to you. We truly do not need to be agree
in our take regarding the ported bass capacity.
Rgs, the Cat
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