First build deep thought, then wait 7.5 million years, and if you're still around you might find out that the Ultimate Question itself is unknown
I'd just wait for an window seat at The Restaurant - that final sunset would be memorable
and why would we not want to flog a topic yet again?
but all kidding aside, there are probably bigger issues to worry about than enclosure distortion
thanks for the fish
Last edited:
Distortion from enclosures can be reflected sound waves off the back, top, bottom and sides of the inner walls.
There must be some context missing here?
People talk about enclosure distortion all the time. They just don't use the blanket word distortion with all its misleading conotations.
I would also question whether an enclosure itself has any distortions itself... it isn't until you fix a driving element that it as part of a speaker system can produce anything let alone distortion. You have to talk about the system.
dave
http://www.google.ca/url?sa=t&rct=j...sg=AFQjCNHuPGldlokk9LxPaKJxmhWlLuxnBw&cad=rja
still funny all these years later
well then you're still left to deal with the enclosure on the other side of the baffle
the room
infinitely more variable than any known enclosure design
Enclosure distortion=alteration of the existing time of the sound
The fact is that when you perceive it, you can even foresee it.
But it's external to the music, which activates some processes
in the mind that need some other kind of 'processation' or...
SO fore-seeing has to be done on a higher level, and all
the so called distortions would just take time to make the process longer
( selecting, neglecting, finding, comparing ...)
The fact is that when you perceive it, you can even foresee it.
But it's external to the music, which activates some processes
in the mind that need some other kind of 'processation' or...
SO fore-seeing has to be done on a higher level, and all
the so called distortions would just take time to make the process longer
( selecting, neglecting, finding, comparing ...)
Last edited:
It has its own characteristic distortion. It lets the backwave interfere with the output of the frontwave.
dave
I have found that a woofer in free air has much much less THD than when it is put in a box.
This I have tested.
And quite possibly the smaller the box the higher the THD becomes.
I have not tested different sized boxes for the same driver yet.
As this will be done sometime soon.
From what I have read, this is true.
And, If any of the panels of the box resonates and vibrates this also adds to raise the THD, this is a given.
FWIW!
jer
This I have tested.
And quite possibly the smaller the box the higher the THD becomes.
I have not tested different sized boxes for the same driver yet.
As this will be done sometime soon.
From what I have read, this is true.
And, If any of the panels of the box resonates and vibrates this also adds to raise the THD, this is a given.
FWIW!
jer
Again, the fact is that the job of the enclosure is to separate the back emission
from the front emission. They both have the same amplitude but one is the negation of the other. So you have an useful signal on one side and an error signal by the other side. Of course the walls of the enclosure would vibrate
following the error ( out of phase) signal, thus contibuting in making the
'data' more confused . Distortion as we are used to cope with is another genre,
and it's much less important ( we can live with that) so there's no THD at any percentage but changement in the way the music flows. This leads to a much
higher order of distortion, it's called altering the original sequence and the order of magnitude is from- threshold to infinite .
from the front emission. They both have the same amplitude but one is the negation of the other. So you have an useful signal on one side and an error signal by the other side. Of course the walls of the enclosure would vibrate
following the error ( out of phase) signal, thus contibuting in making the
'data' more confused . Distortion as we are used to cope with is another genre,
and it's much less important ( we can live with that) so there's no THD at any percentage but changement in the way the music flows. This leads to a much
higher order of distortion, it's called altering the original sequence and the order of magnitude is from- threshold to infinite .
Encloure Distortion
As I thought, not a serious response to my question. I think its time to get heads out of the sand a bit.
The fact remains that a loudspeker system might well be introducing 10 to 100 times the distortion of any other element (amplifier etc) in an audio system, even up to 1,000 times at low frequencies and higher levels.
My simple question, in origin, is which is the LEAST guilty deisgn.
So, as I suggest either some people do not bother to measure and/or those that have and know are not letting on. And, yes, I'm afraid, there are vested interests involved. Similar vested interests will sell you highly expensive cable after trying to convince you you can HEAR the difference between the speed of an electrical inpulse in silver as opposed to humble copper. One wonders what these people with acute preception do when watching a movie - examine each frame as they pass by each twenty fifth of a second, or watch the TV picture gradullay assembling, pixel by pixel ?
Bob Wade
As I thought, not a serious response to my question. I think its time to get heads out of the sand a bit.
The fact remains that a loudspeker system might well be introducing 10 to 100 times the distortion of any other element (amplifier etc) in an audio system, even up to 1,000 times at low frequencies and higher levels.
My simple question, in origin, is which is the LEAST guilty deisgn.
So, as I suggest either some people do not bother to measure and/or those that have and know are not letting on. And, yes, I'm afraid, there are vested interests involved. Similar vested interests will sell you highly expensive cable after trying to convince you you can HEAR the difference between the speed of an electrical inpulse in silver as opposed to humble copper. One wonders what these people with acute preception do when watching a movie - examine each frame as they pass by each twenty fifth of a second, or watch the TV picture gradullay assembling, pixel by pixel ?
Bob Wade
You are not serious
sorry man!
Distortion as you might intend is quite negligible.
Indeed, you might be serious, when you talk about attention
of hearing...
Selection ( or.. election ?!)....
Well, I replied today in the same fullrange forum (pics of DIY enclosures & more ) that I liked the way a man from Uckraine ( Charcoal)did a triangular TL.
sorry man!
Distortion as you might intend is quite negligible.
Indeed, you might be serious, when you talk about attention
of hearing...
Selection ( or.. election ?!)....
Well, I replied today in the same fullrange forum (pics of DIY enclosures & more ) that I liked the way a man from Uckraine ( Charcoal)did a triangular TL.
I think we feel the same way about your questions and subtle accusations as you do about the lack of answers. Garbage in = garbage out.
Robert, do you have a thought about which enclosure type might produce the least distortion? Or, do you have some examples of enclosures that you found produced large amounts of distortion?
Kyle
Robert, do you have a thought about which enclosure type might produce the least distortion? Or, do you have some examples of enclosures that you found produced large amounts of distortion?
Kyle
Hey Bob, have you actually searched and read some threads or are you just expecting an answer? This has been discussed many times in individual build threads, there is a thread on bracing floating around covering this etc etc.
You are not going to get a simple definitive answer. Why? Well for one thing do you know anyone with access to EVERY type of enclosure and the equipment needed to measure 'distortion'?
You have started 5 separate threads essentially about the same thing with no progress. There are many well documented build threads you should read but you'll never hear music let alone distortion if you don't build something.
TBH the conspiracy theory content isn't helping
Try this. The enclosure type per se is irrelevant. Enclosure construction details, driver specifics, drive levels are what define distortion levels (i.e. a system as previously stated). Of these, the driver will generally dominate the audible results.
Robert, your working premise is faulty and you refuse to accept the numerous responses stating same.
If you don't like that answer, here's the simple one: a well built enclosure has the least distortion.
Robert, your working premise is faulty and you refuse to accept the numerous responses stating same.
If you don't like that answer, here's the simple one: a well built enclosure has the least distortion.
Oh really? I've just gone looking for your 'question on minimum distortion.' You waited, what, 24 hours at the most before posting this snide little comment, while incidentally failing to mention that you recieved three replies in said thread, which you have not had the courtesy to acknowledge.
Since you can't be bothered to state the distortion mechanisms you are referring to, no answer is possible. As I mentioned elsewhere.
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.