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Author Topic: Monitors???  (Read 33065 times)

L_Tofastrud

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Re: Monitors???
« Reply #60 on: February 10, 2009, 10:33:08 am »

Thanks - and it's good to hear it worked with the download and renaming the file!

Lars T
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Bruno Gouveia

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Re: Monitors???
« Reply #61 on: February 10, 2009, 11:14:29 am »

I managed to open the file, and yes I understand your point. But let me add this article to the discussion http://www.resolutionmag.com/pdfs/DRAGONS/GETBAS%7E1.PDF

I think even though in closed box the reproduction of bass isn't as efficient it will be more accurate as it won't add a ressonance to the input waveform.

Thomas Jouanjean

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Re: Monitors???
« Reply #62 on: February 10, 2009, 11:35:22 am »

Bruno Gouveia wrote on Tue, 10 February 2009 10:14

url]http://www.resolutionmag.com/pdfs/DRAGONS/GETBAS%7E1.PDF[/url]


Just my .02
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

Bruno Gouveia

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Re: Monitors???
« Reply #63 on: February 10, 2009, 12:04:51 pm »

I believe it's the low frequency in the transients that's important and that we can hear from where it's coming from, not sine/periodic waves. One can say our ability to hear the directionality of low frequency in transients it's part of the human evolutionary process, for instance if there's low frequency in the transient it tell us it's a big object / animal / danger and as we're able to know from where it's coming we can protect ourselves better. We're also more sensible to reflections from the sides and above which helps us to locate a source than from the ground, probably for the reason that normaly danger doesn't lurk from there. That's the reason why, according to Phil Newell, reflections from the big mixing board aren't so problematic as they can seem to be.

L_Tofastrud

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Re: Monitors???
« Reply #64 on: February 11, 2009, 06:10:16 pm »

Bruno Gouveia wrote on Tue, 10 February 2009 09:14

http://www.resolutionmag.com/pdfs/DRAGONS/GETBAS%7E1.PDF
I think even though in closed box the reproduction of bass isn't as efficient it will be more accurate as it won't add a ressonance to the input waveform.


The author of the article mentions linear phase - this requires DSP processing with a FIR filter and if you want it to be phase linear from 20 Hz it will mean a latency in your signal of over 200 ms. In a pro-audio situation this is simply not an option. Electronic circuitry and electro-acoustic devices are pretty much always minimum phase.

Personally I think the importance of phase response in low-frequency systems is overrated – I don’t mean to say it’s not real, just that in the real world there are many things that influences our perception of sound. In our speakers we deal with it in crossovers through making sure the acoustic response of each driver conforms to theory and through careful design of the port/resonant system.

In hi-fi there are so many weird explanations related to phase and it can really get crazy when you hear people explain why 6dB/oct filters are “perfect” -unless it is actually done well, like in Dunlavy's.

I will recommend "the loudspeaker cookbook", "the master handbook of acoustics" and "Handbook for Sound Engineers: The New Audio Cyclopedia" by Glen M. Ballou - these books contain a lot of the most important research on electro acoustics as well as psycho-acoustics.

I'm actually not going to say what system is more accurate - it depends on too many things. If both systems are well designed they can both sound excellent, but yes, at least in theory closed box has the upper hand when it comes to group delay and the reproduction of impulses.

Lars T
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Thomas Jouanjean

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Re: Monitors???
« Reply #65 on: February 20, 2009, 02:30:04 am »

Just received those for the new Northward show-room / studios.
Those are from our partner ATC Loudpeakers. They are custom built and modified ATC 300 ASL. Among other things, they're a little bigger than normal 300s, and have a slanted front to follow the front wall shape of our new CR, but still allowing the speakers to sit properly in the specific decoupled housings we designed for the mains.

Can't wait to have them up and running...
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

Bruno Gouveia

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Re: Monitors???
« Reply #66 on: February 20, 2009, 03:33:37 pm »

I don't want to be the bad guy but I see a dome tweeter. Is the break up mode high enough?

Thomas Jouanjean

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Re: Monitors???
« Reply #67 on: February 20, 2009, 04:03:03 pm »

Bruno Gouveia wrote on Fri, 20 February 2009 14:33

I don't want to be the bad guy but I see a dome tweeter. Is the break up mode high enough?



You're not the bad guy Smile

Yes, they are fitted with the ATC dome tweeter and dome mid drivers. Be warned that while I love to test and experience with speakers, speaker design is not my area of predilection in acoustics (can't know it all...)

What's your opinion on domes, I feel they're not your favorites?

Here's more info about the system:

http://www.atc.gb.net/downloads/PRO_P18-19.pdf
http://www.atc.gb.net/professional.htm

I really like ATC, to me they are absolutely great, so being partner with them is a wonderful experience. But I know that from a certain point in quality, speaker choice becomes very much a question of taste too.
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

Bruno Gouveia

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Re: Monitors???
« Reply #68 on: February 21, 2009, 02:15:11 pm »

Well, according to theory a typical dome driver will break up at audibles frequencies and produce a radiation pattern that will not be anything like the nice pattern of a pistonic driver.  

I have a nice pair of speakers that have a dome tweeter but it's made of a very rigid material so the break up mode is about 20kHz, so not a problem.

I've a strange relation with speakers. The question is I've studied a bit about speakers construction and could understand what principles make more sense. And virtually all the commercially available  speakers I know of don't follow all this principles. In fact there's a book High Performance Loudspeakers, by Martin Colloms, which is pretty good and explains a lot about the principles and has a direction of how an high performance loudspeaker should be. What is strange is that this author is an audiophile critic, but anyhow his reference is still a pair of LS3/5A (they also have a dome tweeter)...!

Thomas Jouanjean

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Re: Monitors???
« Reply #69 on: February 21, 2009, 08:46:39 pm »

Thanks, I'll look for that book.
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

jfrigo

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Re: Monitors???
« Reply #70 on: February 24, 2009, 02:46:43 am »

Thomas Jouanjean wrote on Fri, 20 February 2009 02:30

Just received those for the new Northward show-room / studios.
Those are from our partner ATC Loudpeakers. They are custom built and modified ATC 300 ASL. Among other things, they're a little bigger than normal 300s, and have a slanted front to follow the front wall shape of our new CR, but still allowing the speakers to sit properly in the specific decoupled housings we designed for the mains.

Can't wait to have them up and running...


Beauty. Got any extras in the back of the truck for me?

Laughing

And BTW, the ATC mid dome is a thing to behold.

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Thomas Jouanjean

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Re: Monitors???
« Reply #71 on: February 24, 2009, 03:32:39 am »

jfrigo wrote on Tue, 24 February 2009 01:46


Beauty. Got any extras in the back of the truck for me?


You will receive a phone call.

Then follow the white rabbit.

Come alone.

If I have any suspicion you're being followed, the deal is off.

Come with the cash, used bills of 20 and 50 in a transparent bag.

It's a good thing if you speak russian, too.
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

franman

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Re: Monitors???
« Reply #72 on: February 24, 2009, 11:50:45 pm »

I can absolutely honor a similar deal for a set of Griffin G1 In-Wall mains... you won't be disappointed.   Cool   FM

index.php/fa/11406/0/

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Thomas Jouanjean

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Re: Monitors???
« Reply #73 on: February 25, 2009, 02:59:10 am »

Love that studio!
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers
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