GURU Speakers

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#62
I have switched from Linkwitz Orion ++ to Ino pIP wich would be similar to Guru small speaker! i hope that it says something about the quality of these speakers. I will soon order one of the bigger models and i would absolutly wait for 1 year for them, no question.

For the sound preasure question of these, i can play at greater SPL with these then i could with my Orion.
 
#63
planet10 said:


-- one can have different mixes of different kinds of distortion and have 2 equally valid loudspeakers that sound totally different....

dave
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I think that actually validates my point. Different distortion characterisitcs = different sound characteristics - tells you how important distortion is in the final outcome.
 
#66
tinitus, good elaboration of my undeveloped concerns. two way has just too much compromises.

and then, there is this horrible looking step directly under the waveguide of the tweeter, which really cries for uncontrolled reflections in the treble. it defies the whole purpose of a waveguide, to have such a sharp step directly below it. time alignment is important, but when you do it, do it right and dont introduce another maybe even worse compromise for it.
 
#68
The long waiting that is talked about in the video is taken out of context. The clip is six minutes out of two hours of talks. We have all our products in stock and we deliver to dealers and distributors daily. As of now we have reps in the US, Hong Kong, Singapore and Korea. We're introducing in Europe this spring.

Cheers!
 
#69
Perhaps I misunderstand one of the quotes on the homepage:

“This must be what hell is like”
Fred Mathegian, ultimateavmag.com

:xeye:

Am I taking something out of context?

Jokes aside.

As for the step below the waveguide, the waveguide will have controlled directivity for the higher frequencies which would be affected by the step, so I can see where it might not be as big a problem as it first appears.

"The port indicates a transmission line design, but it’s not - it’s really an unconventionally tuned bass reflex box."

This appears to be no different than what Zaph recommends for port tuning:

The vented alignment I typically use doesn't have a name. I'm sure I didn't invent it, but I haven't seen much out there to describe it. Normally, I'll tune lower to get a more gradual rolloff that works better with room response and puts power handing where I need it. It's basically a type of tuning that is a combination between sealed and vented alignments. Note that this is not an Extended Bass Shelf (EBS) tuning. That kind of tuning implies an oversized enclosure volume, with a dip above the tuning frequency. You get the lowest anechoic F3 with that configuration, but in a real room you get an overbearing one-note bass at the tuning frequency, a huge midbass dip, and crappy power handling.
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The non-textbook crossover is likely what ShinOBIWAN suggested, an asymmetric electrical slope to match the acoustic slopes and tilt the response towards the listener; another theme I have seen in some of Zaph's builds.

In summary it appears to be a well designed speaker that is trying to find a niche. Are there blatant appeals to exclusivity? Perhaps, but I can't blame him for wanting to have interaction with the customer at the scale in which he operates. It probably even gives him a chance to tell the customer not to put the darn things on a wall, in a corner against the walls, or on either side of a TV with a center channel stacked on top .:whazzat:

In summary if you DIY, you can save the money and build one of Zaph's designs, following his tuning and placement recommendations. Or if you have the cash and like to travel, why not go to Sweden and pick up some nice speakers?
 
#70
MaVo said:
tinitus, good elaboration of my undeveloped concerns. two way has just too much compromises.

and then, there is this horrible looking step directly under the waveguide of the tweeter, which really cries for uncontrolled reflections in the treble. it defies the whole purpose of a waveguide, to have such a sharp step directly below it. time alignment is important, but when you do it, do it right and dont introduce another maybe even worse compromise for it.
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As has been stated above; the shelf in the baffle is not just time-alignment!!!
 
#71
Guruproaudio said:
The long waiting that is talked about in the video is taken out of context. The clip is six minutes out of two hours of talks. We have all our products in stock and we deliver to dealers and distributors daily. As of now we have reps in the US, Hong Kong, Singapore and Korea. We're introducing in Europe this spring.

Cheers!
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Hi Ingvar

Would you care to clear up some criticisms of your design?

My main issues are:

The step in the baffle used for time alignment and its possible adverse effect on the wave launch of the tweeter. Its a commonly held design sensibility to avoid abrupt changes in baffle shape and reflective surfaces in close proximity to drivers reproducing short wavelength frequencies.

That your crossing an 8" to a 1" dome at what looks to be well over 2Khz. How's the power response?

Technical dissection is something we thrive on here and claims, especially if grandiose, are often closely scrutinised and more so if counter to commonly held wisdom. So I hope you don't think us pedantic, we're going on what information we have in front of us and then weighing it up against commonly held audio design sensibilities. If you're prepared to reveal the general thinking behind the design then that, rather than marketing, is the currency we deal in around here.
 
#72
>>> two way has just too much compromises.

Yes, that's why i prefer a fullrange driver. As for the larger Guru, it reminds me a little of the Audio Note speakers. Simply a two-way using hi quality parts and a hi quality crossover. For home listening a quality two way may be among the best ways to reproduce music. Other options for quality home music reproduction would be well designed full-range systems, two-way, three-way and four-way. In other words, there are many ways to skin a cat. Personally, i like the look of both of the Guru speakers. I wonder if the larger one was on a flat baffle if it would make any sonic difference?

Godzilla
 
#73
I don´t think the name "Guruproaudio" is Ingvar, but someone else from the company. Ingvar tends to end all his posts with his full name, just so that people can be certain that it´s really him behind any statements. I certainly hope he will too write on the forum, though.🙂
 
#75
Lord_Humongous said:
I don´t think the name "Guruproaudio" is Ingvar, but someone else from the company. Ingvar tends to end all his posts with his full name, just so that people can be certain that it´s really him behind any statements. I certainly hope he will too write on the forum, though.🙂
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You're right. I'm not Ingvar, but one of his partners. I just wanted clarify some things that might come up when discussing this video.
 
#76
Andy Graddon said:


Where? I can find nothing much of information on those pages.
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I agree that the information on the website is scarce, and we have some people working an a better website. But what you can find on the website is some info on distributors/dealers and the regular contact information along with the basic tech specs for the small speaker. It's not a website targeted at demanding DIY's anyway... 🙂

We started the company late January 2007 with production lines that handles quantities established as recently as in August. We exhibited at three shows in the US (NY, Denver and Las Vegas) and we are just now getting a feeling for the market and for what dealers/distributors we want to work with.
 
#77
You certainly need to do something with the web site! 😀

No one expects it to be aimed at DIY, but if your speakers are as good as you say, the site should be aimed at the knowledgable user, not the gullible psuedo-audiophile.

DON'T go the route of words with no content, as many do !!!

And please get rid of things like "Non-schoolbook function",
it make the site sound ridiculous !!
 
#78
I don't know if it's my work computer, but I'm having trouble finding distortion sweeps, vertical/horiz off axis (out to 60 deg), polar data, DI, SPL compression, group delay,etc, etc on the Guru site.
Perhaps the gentleman above with the 18hz bass can provide an FR at the listening position, some distortion data at say 88db at the listening position, etc, etc ?
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Why would anyone who acts like a douche-bag most of the time expect that sort of accommodation?

John
 
#79
Easy to say when you dont risk anything 😉

BTW...we have several well reputed amp designers here, whose integrity are never questioned, although they dont show any measurements

How come you pick so on this speakers...the designer have never asked to be here
I have a feeling that the most critical people here really dont know much about speaker design in practical

When entering a shop, how many people start asking fore measurements...they know nothing about it, and really dont care much...well, I suppose they can use their ears when listening :clown:
 
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