Green Mountain Audio Europas

C

clouso

Banned
This is clearly promoting...and its turning on the ridiculous side!....if i wanna know i will google it and find the site in question and then if im interested i will try to find a dealer and give them a listen and audition if i can and if i cant i wont even consider buying them!......:rolleyes:...i undertsand the point of the thread starter but you know what?.. sorry but i think this thread should be deleted..its the first time i see a company representative promoting that much on a forum with out even getting a warning untill today!.....the only fact that he is arguing about this and that is a hidden way of promoting!....2 cents.....
 
R

RoyJ

Junior Audioholic
Jerry took his own measurements of the Europa and discovered a rise in frequency response precisely in the range which prior to the measurement, perceived a rise.
This is not consistent with your claim and hence calls for an explanation.
Which I will be happy to provide once I know more about his setup and how he went about making the measurement, including what type of test-signal was employed, thanks. And Jerry still may not like what he hears, of course. In my experience, I don't think we all hear differently, but that we each pay attention to different things, and also posses different abilities in discernment, usually linked to a difference in experience, in training.

Secondly it is often said that the use of first order crossovers makes the frequency response difficult to correct and control, which suggests a possible explanation for the rise that Jerry heard?
It can be, but our particular drivers are super well-behaved with no crossover circuit on them, so there are no major frequency-response errors to correct. We are happy to supply the anechoic factory response-curves of any driver we use to those interested.

As some may expect or already know, there are not that many 'superior' drivers, even with the wide range of seemingly 'high-tech' drivers available today. It's one reason we see the use of higher-order and complex crossovers- to 'fix' things in drivers that were not inherently right in their natural responses, such as the resonance of a metal cone being notched out. Many people, including experienced designers and reviewers, do not realize that this resonance will still be triggered by its subharmonics and by any wide-band, atonal transient (a noise burst, like from the whack on a snare drum or handclaps perhaps). This is a 'law' of the physics of resonant objects.

Also, it has been shown in much research that the ear is relatively forgiving of minor tone-balance irregularities (amplitude variations of a few dB here and there). The feeling is this is because the absolute loudness of a sound in any tone range is always going to be different each time we hear it in a different location, so other sonic characteristics about 'that sound', ones less variable on the conditions in which we hear it, have taken precedence in our brains. One example would be mom's voice over a phone or in person. It's Mom, and we know that while ignoring the extreme tone-balance differences.

Not to say that making a driver's response even more smooth is always a worthwhile goal, but only that a slightly irregular response is less important than the magazines and conventional wisdom would have you believe. But amplitude response (frequency response) is easy to understand, apparently easy to measure accurately, and easy to graphically present- hence its emphasis in publications and marketing. Makes sense, since anyone knows what a bass and treble control, or perhaps an equalizer, does.

I have appreciated your input Dr., thanks!

Best wishes,
Roy
 
H

highfigh

Seriously, I have no life.
I think it's possible to reduce one's bias toward their own product(s). I'm not sure it's possible to completely eliminate it, but if someone is designing/building something and they want it to be the best (or close to it), they need to look/listen at it with the same eye/ear as anyone else who's checking for the details, whether good or bad. I have been building a pair of speakers and they weren't up to my expectations, regardless of the fact that I really want them to sound great. Unfortunately, I have been very busy and haven't been able to spend much time tweaking them but I still knew they sounded bad enough that I wouldn't leave them that way. Tilting the cabinets back and some equalization (that simulates the effect of a tweeter L-pad) has made a world of difference and my next step is to actually find an L-pad config that works the same way. Since I didn't have time to build the test rig I wanted to, the tilt of the face proved that I need to work with the alignment of the drivers relative to my listening position and the room.

That said, and keeping the recommended setup in mind, it's still possible that these need to be placed differently in your room, especially since you posted that the acoustics aren't good. You may find that they need to be higher in order to minimize the upper-mid harshness and make the vocals more pleasing. If the room's RT60 is high, I don't know how the mid-range could sound as good as you want and like.
 
R

RoyJ

Junior Audioholic
Hi Jerry,

You may not be interested in the dollar prizes some have offered, but for the sake of the audio world you should really prove that in a third-party controlled experiment.
Anytime at my factory- anyone can run the tests I have suggested. Otherwise, my first duty is to get product out the door.

So you are now immune to the power of suggestion and no longer have any influence from what you see or expect?

That's a pretty amazing claim.
And I went on to say I still have to be on guard. And I retain the option to use DBT when I feel the need. I do not discount DBTs, but have been able to move past them for most purposes, something I thought would ever happen. Again, it took a long time- several thousands of hours spent listening in controlled and quiet conditions, year in and year out, each time for hours on end, with no interruption.

That is not something most anyone gets to do, so I understand any skepticism, for I had that for a long time as well. I was fortunate to have begun this journey before 'major sonic differences' from amps and cables were being touted by the press.

Back then, I had every reason to say 'hogwash' to claims made about the new gear becoming available, since I often heard little difference. For more than a decade, I was responsible for selecting what products at all price ranges to demonstrate and sell, and justifying each to a store's owner, and that experience forced me to become a better listener, so that I really knew the differences if there were any worth hearing.

During that time, when I thought I did hear differences, I often found it was from marketing influences and too often from my own excitement in trying something new, perhaps more expensive and/or fancier-looking.

Fool me once, shame on you, etc. Live and learn is my motto.

Peace,
Roy
 
JerryLove

JerryLove

Audioholic Ninja
sorry but i think this thread should be deleted..its the first time i see a company representative promoting that much on a forum with out even getting a warning untill today!.....the only fact that he is arguing about this and that is a hidden way of promoting!....2 cents.....
The posts arguing against a break of rule 4 were deleted. Rightly so.

The quoted post above arguing in favor of a break of rule 4 should be deleted on the exact same grounds. Once that's done, my response here should be deleted.

Let's not engage in a meta-discussion, shall we?
 
T

tom67

Full Audioholic
Quickly......the truth

You may not be interested in the dollar prizes some have offered, but for the sake of the audio world you should really prove that in a third-party controlled experiment.

So you are now immune to the power of suggestion and no longer have any influence from what you see or expect?

That's a pretty amazing claim.
So, do the damn things sound good under some conditons or not?......hurry and tell us before there is bloodshed....
 
JerryLove

JerryLove

Audioholic Ninja
So, do the damn things sound good under some conditons or not?......hurry and tell us before there is bloodshed....
As I said: there appears to be a mid-vocal hump with missing sounds around it. There's some oddities in the HF as well that I've not pinned down (the "tick" along with the beat in "Brothers in Arms" by Dire Straits for example). In most of the setups I've done, they are fatiguing at high volumes, but fine at lower ones.

There's also good separation, high intelligibility of vocals, and they tend to project well into a room.

I've got quite a bit more written up (including listening impressions in both music and HT), but in addition to my own distractions I keep hitting "one more thing to change". The last was setting up the height and orientation that the manual suggested (which was lower than I had been testing). Next will be a call to Roy to see what he wants to muck with.

Roy has been very nice and obviously is putting a great deal of time in here. I want to make sure to give him a fair shake; even if that means this takes half of forever to complete.

I can tell you at least that they are positionally fussy. If proper positioning relative to the listening position (rather than to the walls) does change the performance, I suspect that will mean a small sweet spot... but I won't know until I try.

If I open a thread with an incomplete review, there will be a lot of pages of this stuff that show up before I can finish what I have to say. This will not be a fast process for many reasons... but I think it's been worth mentioning early as I've gotten a lot of good input.
 
KEW

KEW

Audioholic Overlord
You certainly have my appreciation for exhibiting the patience to get it as "right" as is reasonably possible!
I certainly agree that to post a partial review, followed by the predictable discourses, then followed by your finalized comments would dilute the review and make it a difficult read for someone later looking for such info. Not everyone is willing to wade through 20 pages of tripe to glean the actual review.
 

Kitsum

Junior Audioholic
I don't see this thread as promoting. If anything, with some of the responses here, it drives away from GMA educated consumers like me. Fortunately, there are many down to earth, no nonsense designers and companies to choose from.
 
majorloser

majorloser

Moderator
The posts arguing against a break of rule 4 were deleted. Rightly so.
Those posts were deleted by the OP's. You being one of them.

This thread will remain closely monitored by the mods and admins. Hopefully we can prevent it from running off course or from being turned into a company promotional piece.
 
GranteedEV

GranteedEV

Audioholic Ninja
We are both up to late, as I am in the same time zone... and waiting for glue to dry on a project. Exciting stuff... I hope you are having a fun evening.
Up late is the fate of someone who's got exams about to kick his *** @_@

So, to find the best-value parts, I have used what I know physics says about that type of product, about the effect its construction will have on the signal, and then choose among what seems to be the best, by making the same judgment calls that anyone would in their system, by changing that one 'wire-variable', and listening. I would prefer something more expensive would not be better, as to my bias. Acute listening easily betters DBT testing in my experience, as long as one puts expectations aside, which gets easier the more experience we have. I digress, sorry.
Double Blind testing and acute listening are both flawed in that they look only to find differences. In the case of speaker wire and interconnects, these differences simply should not exist, as it is very much possible to find wire with the right physical properties to most effectively carry a signal with least alteration. If you are in fact discovering differences, the real question should be which measurable quality is producing these.

But it is wrong to think this particular wire can be duplicated economically.

I am sure he produces only a few thousand-foot rolls at a time (in the USA), and that does cost a lot when you look at the wire's delicate construction, which again, makes absolutely complete sense to avoid most everything advanced physics says about 'what goes wrong in wires'. Which was part of my graduate studies.

My thoughts on what goes wrong in wires are on our website-- and I'd be happy to clarify anything there, since I wrote this a few years back, and I'm not a very good writer.
I will in fact give it as unbiased a read as I can, however my expectations for a good, properly scientific methodology and explanation are in fact rather high.

Sorry, what agenda I would ask?
This agenda would be the one alluded to earlier, that reviewers for certain magazines do in fact get paid to review certain products. One particular magazine guilty off the top of mind to an extreme extent is called stereotimes. If you just scroll down to the second page of any given review it will have the ever-so-clever "My wife was amazed at how transparent she is, and she can't tell the difference between a chicken's cluck and a tiger's roar!" and a final paragraph saying "This is the best x i've ever experienced! Highly recommended!". my experience with 6moons reviews is much the same way.

Perhaps we should not read any reviews-- sorry you feel that way, and believe me, I do understand. I have heard many reviewers' systems, and I too wonder at what the heck they are hearing because it seems easy for me to hear only their gross problems, such as the room's poor acoustics and frequency response, a poorly-designed tube amp that muddies the bass, or poor speaker or listener placement...
The primary issue is that most of the time, there's literally zero attempt at true criticism in most, but not all audio reviews. It's usually fluff and advertisement.

But I don't know what we should expect to gain by the reviewer using any old cable. Your thoughts on that? If you were a reviewer, how would you approach that issue?
Any cable with the appropriate measured response for a given operating distance, and no real mention of it, really, is preferable. If I see a fire hose in the picture of a speaker, it implies to me that the reviewer is lost in a completely different world of fantasy where cables are dressed and given stands and amplifiers are given feet. I can not relate to someone seemingly more interested in the audiophile world than in actual performance.

As some may expect or already know, there are not that many 'superior' drivers, even with the wide range of seemingly 'high-tech' drivers available today. It's one reason we see the use of higher-order and complex crossovers- to 'fix' things in drivers that were not inherently right in their natural responses, such as the resonance of a metal cone being notched out. Many people, including experienced designers and reviewers, do not realize that this resonance will still be triggered by its subharmonics and by any wide-band, atonal transient (a noise burst, like from the whack on a snare drum or handclaps perhaps). This is a 'law' of the physics of resonant objects.
Hrm? As far my understanding goes, this would only occur with a high-distortion driver, hence why we search for drivers with mitigated harmonic distortion. Do you care to elaborate?

I have appreciated your input Dr., thanks!
You would be one of the very few to do so.

For a long time, I agreed with you and used wire that was built 'well enough' with pure copper and a teflon insulation. And other wires showed only minimal gains (or losses) in clarity and dynamics until I finally eliminated or minimized a lot of the other distortions common to speakers, such as cabinet-surface reflections, poor crossover parts (not very clear or dynamic), and made the speakers time-coherent with a very simple crossover (less parts count = more clarity). Then it became pretty easy to hear if there was a worthwhile difference between one high-quality wire and another. We were certainly shocked when we heard the difference this new wire made inside the speakers.
I don't disagree with this. Without the issues introduced by most inductors, and with the critically damped Q of .5 in a 1st order system - I suppose the impact of cable characteristics having more relative significance... perhaps. I still don't agree with the idea that fancy audiophile branded cable is necessary either way. I suppose in a cost-no-object world it's inconsequential, but my concern is moreso with the idea of listening to audiophile cable is, as a general rule, moreso an exercise in determining the most pleasing coloration. I feel that indeed speakers are such a complex beast, but cable in and of itself is pure simplicity - anything a cable does is able to absolutely be quantified properly with known measurements. This encompasses all losses associated. Most of the time, it's the "audiophile" cables which are usually single handedly most responsible for these losses - the sort which these forums disdain.

Ultimately most cable characteristics should be so measurably minute, that audibility should still virtually impossible - regardless of relative loss magnitude.

With all that said, I still have one thing to add out of plain curiosity:

For someone understanding of the problems in passive loudspeaker design, have you ever considered development of a true FIR tri-amplified loudspeaker? I understand it's much the opposite of what you do build, and thus I'm somewhat curious if you would just discuss your feelings based on your experiences. Or even a more simple bi-amplified first order system. Does Green Mountain, (certainly no differently from the industry as whole mind you) stick with passive crossovers in general because the market dictates it, or is it a voluntary choice? Would you offer outbound analog crossovers/amplifier solutions for those interested in proper bi-amplification?
 
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GranteedEV

GranteedEV

Audioholic Ninja
Damn, I missed the edit window.

TO clarify myself a little bit when I said

Any cable with the appropriate measured response for a given operating distance, and no real mention of it, really, is preferable. If I see a fire hose in the picture of a speaker, it implies to me that the reviewer is lost in a completely different world of fantasy where cables are dressed and given stands and amplifiers are given feet. I can not relate to someone seemingly more interested in the audiophile world than in actual performance.
I wanted to say that this to me is ostentatiousness and nothing more. You could say my prior usage of the word retard was extreme and impolite. However I will say that my view is rather vehement towards this behaviour. To pre-empt a certain few people: NO, this does not imply that I envision it as something too high-class for myself or this "message board interested only in paradigm and receivers". Does this mean that someone shouldn't the freedom to dress up whatever s/he so desires in whichever way s/he finds more aesthetically appealing? no. However in this scenario is usually has nil to do with aesthetic appeal and everything to do with misguided perception.
 
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JerryLove

JerryLove

Audioholic Ninja
Sorry, I did not get a chance to call Roy this weekend (my bad). I did get out today and pick up some wood to custom-height the stands. Right this moment, the poor speakers are sitting on the edge of folding chairs (because I don't have stands in my family room).

No, those speakers were not in that position during testing, I had cleared the space for the Europa's; and most testing was not done on folding chairs :)
 

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JerryLove

JerryLove

Audioholic Ninja
damn those wmax speakers and N801s are so sexy =\
Sorry. I should have cleared those out of the way for the shot, but they are heavy and I wanted to put something up.

The Modified Primus' are my main listening speakers for the family room (and every room adjacent). The N801s were intended for the bedroom HT, but they are too large and not tall enough (bed is high) and so I'm not entirely sure what will become of them. I had been experimenting with them in the family room until the GMA project came up.

*Edit* Just for you I relocated the 801 and cropped the shot. You know that thing weighs over 200lbs right? You are evil :)
I'm not sure the new shot accurately reflects the chaos in my living room right now :D
 
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GranteedEV

GranteedEV

Audioholic Ninja
*Edit* Just for you I relocated the 801 and cropped the shot. You know that thing weighs over 200lbs right? You are evil :)
I'm not sure the new shot accurately reflects the chaos in my living room right now :D
Blame B&W for their extreme ultra bracing and wmax for.. well... everything else :p
 
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D

Dr. Parthipan

Junior Audioholic
So Jerry how do the Europa compare with your N801 is there just no comparison?

And a question to Green Mountain Audio: Looking at the picture Jerry posted up I can see that a small part around the tweeter on the baffle is covered in some foam. Why didn't you cover the entire baffle leaving only a small hole for the dome of the tweeter? Wouldn't this minimise diffraction even more?
 
JerryLove

JerryLove

Audioholic Ninja
So Jerry how do the Europa compare with your N801 is there just no comparison?
It is really not reasonable to put a $11k 1000w N801 against a $1k 150w bookshelf.

Ignoring the price disparity: it's never simple to compare a full-range speaker to a bookshelf. Even between bookshelves it can be difficult factoring out the difference in LF performance fairly. Well, at least for me. Perhaps some of the old hands here can do so more quickly.

Now, if Shakey wants to bring his C3's by.... :D
 
KEW

KEW

Audioholic Overlord
Even between bookshelves it can be difficult factoring out the difference in LF performance fairly.
This statement reminded me of our previous discussion of using subs vs setting a crossover to eliminate the lows.

A point of concern is how the non-time-aligned subs might obscure this core aspect of the GMA speakers. I don't know how you could assure it met the level of accuracy purported by GMA.
GMA does sell subs, so maybe it isn't that big of a deal.
 
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