dogbaker

It was intentional - you would have known that if you bothered to read all the way to the end of the text.

I like Tom's Dick, it's a pipe line to more ojective knowledge.

Yah - it's funny how EIA testing methodology and modern test gear always produce bogus results - I have been meaing to give them a link to your thread so they get straighten out by you!

I told you I can do this for ever!

Mach5

Well, the initial idea is 6x18" on top and 6 at the bottom, 2 rows of 3. I don't have the subs ready yet, but wanted to build the box first. The idea is the highest compression ratio possible for a 18" sub, and the box has limitations because it probably wont have enough mouth area for 12x18" considering I wan't the subs coupling at 20Hz.

Father Yuli

iTrader: (17)

that one went way over your head............+1 for bogus reviews.

you must be Greek for you to refer to another man's ***** as a pipe line to more knowledge. That's what they used to believe in ancient Greece.

tapped horn isnt any louder in a car than a regular ported box.

dogbaker

Okay - I am with you...

Here's the one choke point in my mind, we really need to select a sub, buy one test it and get to work building a single driver prototype to learn more about the driver, which will narrow our asumptions as we head for full scale. This is the minimum path that I recommend...

Please note the 20Hz = bigger box... So your after a ground pounder and not a high SPL alignment - correct?

dogbaker

I've dated a few Greeks - and they did have nice butt's!

Mach5

We build subs (www.mach5audio.com) and the driver intended to be used on this project is still being developed, will take a couple months.

The box can be 10 feet long, the issue with that is the reduced mouth area, agree? Ground pounder yes, is a demo van.

Actually I just found out that the van was stolen, yesterday, let's see what happens now.

johnw

iTrader: (4)

Fixed

Dukk

Well, I'm Dukk. I am sure you have heard of me. I am the 'false god of audio' remember? Being Dukk I don't need to explain my credentials. I am legendary.

You really only need to know two things about me - I'm a tolerant guy but I don't like ******** and I own the banhammer. Keep up your poor attitude and I will show it to you. This is not a free forum. It is ran by overbearing power mad dictators. Ask anyone.

Based on your statements and posturing I have an idea of who you are. Of course you could just man-up and remove any doubt but I can understand why you want to keep your annonymity. If I were you, I would too.

One thing though - please learn to spell. You undermine your self professed extensive education with your poor spelling.

Hopefully things settle down and we can enjoy your time here. We will see.

dogbaker

Quote:
Originally Posted by kevmurray
I was talking about a proper high frequency Scalar Network Analyzer perhaps capable of meaningful measurements to 40 GHz. They cost as much as a small house and so would be restricted to labs of corporations. I see now that your equipement is not this sophisticated and I'm not trying to be condescending. You are lucky to have a well equiped shop but I question how you obtain measurements in the pico range with affordable equipment.

This is true but the question is whether it is "profound" or whether one can even hear it. I think not and dislike the tone you have adopted since you joined the discussions. There are people on this forum who understand what you are talking about even if they do not work in the Hi-Fi industry. Some are active but many are lurkers who don't participate in the discussions.

I'm still laughing. Thanks for that I guess.

No need to provide plots I know what you are referring to. While I was not aware entirely what you were talking about at the time I still say you are overstating. I don't mean to stonewall you with subjective opinions. I truly believe that pico range time or amplitude differences are inaudible.

Everyone? There is no receiver I'm aware of (please correct me) that is capable of correcting for a few feet of wire. The time resolution is just not available, at least not in anything stretching the definition of reasonably affordable. Definitely not over frequency. While cables do contribute to many system parameters like Qtc simply using a large stranded cable with reasonable lengths will more than suffice. Exotic cables may improve measurement scores but in my opinion they aren't worth the money. You've repeated the offer to provide the math, I'm familiar with it, I don't dispute it, I'm just not interested because I don't think it's even interesting.

Yes you later recanted a bit. But you continue to exagerate and talk to other members in a manner that is elitist and condescending (no not enlightening). I'm afraid your first impression may be unrepairable.
Untrue, while I no longer work with it daily I have used high speed digital equipment that dwarfs the cost of your entire lab/workshop. I now use FFT and MLS for taking measurements at home. I dont use it in a professional capacity anymore. While you obviously have access to some nice equipment I doubt there are affordable digital systems capable of time resolution to the pico range. Not reliably anyway. I am interested in what you use to achieve it though (see I keep an open mind).

I will. You come across as someone who believes he is much more intelligent and knowledgable than any member of this forum. Why is that?
[/b] Yet you persist. I don't doubt that you are correct in the measurements, I know many of these things can be measured I just don't share your opinion that they are audible. I do dislike your delivery and suspect it will continue.
Yup.

Nor was it for the individual who posted it. It may have been overly simple but it is more than suitable for an internet forum where no one asked for an indepth discussion of transmission lines. When posting here there is no need to be condescending and tell people to learn or remain stupid. In my experience it's best to explain things the technical way using the simplest technical terms possible. The people who wish to learn the details will ask for clarification. Others may wish to remain ignorant and continue to dis-information but this can't be fixed no matter how we challenge them. Around here we only talk about what amp is ok to use with a particular subwoofer. Soon we will wear you down. You will get stupider and stupider and we will get along good.

__________________________________________________ ___

Okay - Okay

I'm not that much of a hard ***, I just wanted to get everyone thinking and put them on notice that if they want some facts, then ask then listen - I am not here to be taught (but I am sure that I will learn a few things), but to share what I know with others...

So rather than us continuing in this fashion, let's settle down and clear up a few remaining miscommunications...

So come-on, 40gig tester for Audio - we are after samples between 20Hz to 100KHz... We are not interested in microwaves... Agreed...?

Secondly please stop misquoting or loosely quoting me - I haven't said that Pico latencies are audible in all devices - what I did say is that they and other small delays sum and ultimately do become audible... Now, where I have assumed we went down the wrong path, was when I stated delays in CD players as being audible and cited delays in the Pico range as contributing to these differences. Not in cables and amps etc..., but can be measured!

So let me make this a little more clear - in purely digital domains, which strive to stave off a multiple in layers of inherent timing errors, DDC's, DAC's, ADC's etc included... In these environments/circuits, signal delays directly contribute to harnesses observed subjectively, in many digital audio source units... Source units with delays in the nano region or lower sound smoother and more like analog devices, there are but a few that have measure delays as minuet as Pico seconds, and as stated before they are all over $6000.00... I didn't say that Pico delays in a cable are audible... milli are...

So it is now very clear that you have very little knowledge of the vast amounts of test equipment and related technologies of which they are based, available today for measuring audio qualities - not microwaves... It is also just as clear that you have just as poor of an understanding of the availability of DSP within consumer products, here is a list of a few companies (car, home, pro & commercial) that offer units with advance DSP, which will facilitate either automatic or manual adjustment of electrical delays and physical asymmetric placement of speakers within a listening space...

Alpine, Sony, Eclipse, Rockford, Orion, Clarion, Pioneer, Audio Control, Yamaha, Denon, Onkyo, Kenwood, NAD, Rotel, Mission, Naim, Anthem, Moon, Linn, Rane, Behringer, Roland, Danley, Lexicon, ARC, Zapco, Audison, Crown, QSC, IED, Biamp, Crest, Ashley, Atlas Sound, Netstreams, Speaker Craft, Sunfire, etc, etc, etc

There are at least a hundred manufacturers using this technology within several of their varying models...

So if you are unaware of common consumer offers, there is no chance that you would have a complete understanding of esoteric lab grade offerings - you might be aware of a few, but that's it!

You sound like you might be more familiar with low amplitude, high frequency gear - am I correct. You keep mentioning gear that isn't intended to measure audio signal goodness (20Hz-20KHz), so I am getting the feeling that you’re in college, gearing up for a career in communications verticals - am I close?

So let’s tone this down - your knowledgeable - I'm knowledgeable, we sometime misunderstand what the other is attempting to say and other times we simply agree to disagree...

Fair enough - ?

Do you feel that you have worn me down enough, so that we can now move on, or do we need to go head-to-head on every point to know ones really benefit but each other’s ego's etc...???
You decide...

As for the rest of your comments, they have become stale...

dogbaker

I have not heard of you or I would have not asked!

I am not going to go around and ask others, who you are, when I can simply ask you, in the same way as you asked me...

I answered your question about my back ground, why won't you do the same...

As for spelling - I have put down near 20,000 words in three days - just think of them as typo's - I don't have time to proof my text messages and that's what these are to me, back channels for quick, efficient communications - like real text messages, typo's and general grammar mistakes are common... As a point of fact, most of my messages have been typed from my iphone, which in and of itself can be challanging...

But if you can't find any sound ground to attack the centric theme of each of my 'texts' I can understand why you would try to undermine me from another angle... Shame - Shame...

What's next a spelling bee...

Ban me if you want, censorship = weak mindedness and creates a sense of false control...

You have no control... I'll simply create another profile, log in through a proxy server and you will think that you have spotted me, and then ban me again, but you will in fact simply be banning others and I will remain - tone is easy to play with in text...

So why don't we just work past this...

I spoke strongly about some sensitive topics and people responded to it - smack talk got started (which can be fun) and got carried away, by all of us...

let me know what you think... If others mellow, I will too...

PS Its not fair to ask a person to provide some background about themselves, then later cite only a portion of their answer and call it posturing...

I have always included everyone`s full responses - etc...