AudioCircle

Industry Circles => GR Research => Topic started by: Danny Richie on 4 Sep 2019, 01:08 pm

Title: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 4 Sep 2019, 01:08 pm
Go here to see all old topics and new topics each week.

https://www.youtube.com/channel/UCIJHwsTJyrH4YznoJxZmJHQ/videos

This is also a good place to recommend or request topics for future episodes.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Elizabeth on 4 Sep 2019, 02:23 pm
Thanks Danny!
One topic I would be interested in is why the open box? What is the (both measured frequency response and listening) difference between dipole and closed box speakers? Do the open back speakers behave like dipoles? or is there still a difference since there are 'some' side panels in place? Is there a side panel baffle step worry? for open back speakers?
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Tyson on 4 Sep 2019, 02:50 pm
Yes, I agree, something that talks about how OBs are easier to integrate into a room, with measurements, would be great.

And really nice work on the videos so far.  Before, I didn't understand quite how important the spectral decay plots were, or how to read them properly.  I do now!
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: cewill99 on 19 Sep 2019, 09:25 pm
I have enjoyed Danny's tech talk videos. After the last one, on upgrading speakers, might end up spending money on some older speakers.  :wink:
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 5 Nov 2019, 01:37 pm
I talk about DIY verses commercial products this time. https://www.youtube.com/watch?v=7yozUh8xBfk

Special mentions to Mike Lundy for excellent finish work and Peter's new CNC work.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Jmitchell3 on 26 Nov 2019, 03:30 pm
Excellent klipsch video. Danny these Tuesday tech talks are awesome!
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Moore66982 on 27 Dec 2019, 08:33 pm
Danny,
In the latest video and you are giving the tour of your listening room. What is the black deflector you have on the wall?
Looking for suggestions to put behind my NX-Oticas that don't cost a fortune... 

Craig
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 27 Dec 2019, 10:19 pm
Danny,
In the latest video and you are giving the tour of your listening room. What is the black deflector you have on the wall?
Looking for suggestions to put behind my NX-Oticas that don't cost a fortune... 

Craig

The diffusers are from PI Audio. And they are great behind the NX-Oticas.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: daveshear on 13 Jan 2020, 10:40 pm
Thanks Danny for your help today.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 14 Jan 2020, 07:04 pm
An interesting new topic today: https://www.youtube.com/watch?v=SIOjjle8Kxw&feature=youtu.be&fbclid=IwAR2OQTPWhJlizPoGsqmgYdXRChfJkF6uVVDHyH3PvhIYhy_Unaw5oCqACEc
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: maty on 4 Feb 2020, 04:16 pm
Tech Talk 32

YouTube GOOD Gear in BAD Rooms! with GR-Research (https://www.youtube.com/watch?v=TGWvbgmzQwQ)

(https://www.audiocircle.com/image.php?id=204226) (https://www.youtube.com/watch?v=TGWvbgmzQwQ)
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: DonMcG on 11 Feb 2020, 12:46 pm
It is worth repeating, I have learnt more from Mr. Richie about speakers then anyone. Thanks for the informative videos.

Don
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 11 Feb 2020, 10:10 pm
Thanks Don,
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 11 Feb 2020, 10:10 pm
Today's episode was quite interesting: https://www.youtube.com/watch?v=lmsMGILAYvk&lc=z223ejpg0ovshvuge04t1aokgrcq2wzckp5gbh22cutmrk0h00410.1581457833809405
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 28 Feb 2020, 10:03 pm
The Tuesady Tech Talk has gone so well that we decided to create a GR Research specific Youtube channel.

All of our Tuesday Tech Talk videos are there and can be seen already. New video's will be posted weekly taking on a number of topics. And you guys can even suggest topics that I can cover.

For right now this is all starting fresh and I need to build subscribers. So I need all of you guys to follow the link and become a subscriber. And to get the ball rolling I need to get those subscriber numbers up.

Check it out: https://www.youtube.com/channel/UCIJHwsTJyrH4YznoJxZmJHQ/videos

Thanks everyone!
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: mlundy57 on 28 Feb 2020, 10:18 pm
I'm subscribed  :thumb:
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Tyson on 28 Feb 2020, 11:23 pm
Hey, is the website going to be updated soon?

One thing I'd suggest - when you revamp it, have links from the kits to any flatpacks that might exist for that kit.  It will save people a lot of time having to come to AC and hunt around to find something.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Hobbsmeerkat on 29 Feb 2020, 12:18 am
Subbed a few hours ago before you hit 100 subs,
Looking forward to what may be coming next! :thumb:
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 29 Feb 2020, 04:26 pm
Hey, is the website going to be updated soon?

One thing I'd suggest - when you revamp it, have links from the kits to any flatpacks that might exist for that kit.  It will save people a lot of time having to come to AC and hunt around to find something.

Yes, we are working on the new website right now.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: SoCalWJS on 9 Mar 2020, 07:05 pm
Danny, your videos just keep getting better and better! I enjoy picking up more info each time and am slowly getting a better understanding of how things work. I still need to understand the basic ELECTRICAL funtion of the basic functions of the various pasts of the crossover. I took a basic Electrical Class many (many) years ago, but quickly discovered it was not my strong point. I’ve forgotten virtually everything I learned. I need to review basic schematics again. Pretty easy info to pick up, I just need to dedicate some time to it.

Wondering about future topics you might cover in your videos. I was wondering if you had thought about getting a bit into speaker placement theory as far as spacing and toe-in. I’ve pulled my speakers as far into the room as I can get away with. The front wall is over 4 feet away from the back of the closest driver (right at 4 feet to the cabinet itself), so it’s not too bad.

I have some leeway with respect to how far apart the speakers are from each other. I have tried the “Golden Triangle” positioning and wasn’t overly impressed. Too near field for me. I then played around until I got a fairly smooth FR and worked on toe in so that I got it as wide as possible but still have a clear pinpoint center image when appropriate. (Well recorded single acoustic instrument or voice).

Then I start fiddling with the EQ on the Servos. I’m fairly happy with it, but still not certain I have it right.

Have you thought about a video on how to properly set EQ & Phase on the Servos? Acoustic considerations for positioning/toe in would also be appreciated.  :D
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 23 Jun 2020, 04:01 pm
This weeks video is a good one. https://www.youtube.com/watch?v=HsmDPRMWz30&t=13s
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Endo2112 on 23 Jun 2020, 04:30 pm
This was a good one Danny, love hearing about the race car speakers, so to speak!!

Cheers,

Don
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Captainhemo on 23 Jun 2020, 07:04 pm
Gotta love the cheese  man    :rotflmao:
Awsome it  turned out so well 

jay
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: VinceT on 30 Sep 2020, 03:23 am
Danny - Thoroughly enjoyed the recent tech talks regarding the open baffle speakers, very informative.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Hobbsmeerkat on 30 Sep 2020, 03:28 am
Same here!  Keep up the great videos, Danny! :thumb:
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 30 Sep 2020, 01:54 pm
Thanks guys. I appreciate everyone watching.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: johnnybravo on 5 Oct 2020, 01:10 am
Many thanks to Danny for allowing me to come over and pick up some modified speakers this past Friday !!

Drove up from Houston (a little longer than I thought but the weather was great).

And I got a super-quick demo of Danny's awesome line arrays(?). Have not been following threads so not sure.

But they sounded amazing, even on a couple of quick songs.  Driven by an 8 watt tube amp.  :o

If I had a totally separate/set up room, these would be almost unbeatable - cost no object.  :icon_lol: :thumb:



Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 5 Oct 2020, 07:35 pm
Thanks for dropping by Johnny,

Those were the NX-Treme's that you heard.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: audiophilanthropy on 13 Oct 2020, 08:15 pm
Thanks for another great OB Basics video. I really learned a lot about configuring the amp settings for my H-frames. Going to start tweaking some more now. . .

Question for you, Sir. On the full range OB models using an asymmetric baffle, the short side of the baffle is on the outer or wall side of the frame. Which makes sense since the goal is to control dispersion in that direction. But what are your thoughts about applying that reasoning to either a home theater setup or in my case, a near field desk setup, where I want to minimize the reflections off a TV or a computer monitor? There are certainly trade-offs with room control a bit but I am curious how that will affect a full ranged center image. I haven't built any OB nearfields just yet, parts are on the way. But I experiment a lot with acoustic treatment between my nearfield speakers and my computer monitor and it makes a huge difference. Truly immersive. My goal is to take that a step further with OB nearfields.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 13 Oct 2020, 10:51 pm
Thanks for another great OB Basics video. I really learned a lot about configuring the amp settings for my H-frames. Going to start tweaking some more now. . .

Question for you, Sir. On the full range OB models using an asymmetric baffle, the short side of the baffle is on the outer or wall side of the frame. Which makes sense since the goal is to control dispersion in that direction. But what are your thoughts about applying that reasoning to either a home theater setup or in my case, a near field desk setup, where I want to minimize the reflections off a TV or a computer monitor? There are certainly trade-offs with room control a bit but I am curious how that will affect a full ranged center image. I haven't built any OB nearfields just yet, parts are on the way. But I experiment a lot with acoustic treatment between my nearfield speakers and my computer monitor and it makes a huge difference. Truly immersive. My goal is to take that a step further with OB nearfields.

I put the long side wing to the inside. This minimizes some of the higher frequencies dispersion and minimizes some center wall reflections. And with the open side to the outside it really opens up the sound stage.

Room treatments are of course still needed at reflection points. And a combination of diffusion and absorption works best.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Early B. on 14 Oct 2020, 05:49 pm
Danny -- I watched your most recent video. You should do a quick video tutorial on adjusting the A370 amp settings.  If Ron at New Record Day doesn't get it right, then what about the rest of us? I'll bet 90% of owners don't know what to do or why.

Here's the tragic circumstance -- most of us probably aren't hearing what you and Rythmik Audio designed as some the best bass on the planet. A personal story -- for years, I've had the wrong settings on my amps. When I recently made an adjustment, I basically heard an entirely different system from the bottom to the top. The sound was 100% better. However, I can probably get my system to sound even better if I learned a little more about those settings.   

Title: Re: A link to all Tuesday Tech Talk video's.
Post by: corndog71 on 14 Oct 2020, 05:53 pm
Danny -- I watched your most recent video. You should do a quick video tutorial on adjusting the A370 amp settings.  If Ron at New Record Day doesn't get it right, then what about the rest of us? I'll bet 90% of owners don't know what to do or why.

Here's the tragic circumstance -- most of us probably aren't hearing what you and Rythmik Audio designed as some the best bass on the planet. A personal story -- for years, I've had the wrong settings on my amps. When I recently made an adjustment, I basically heard an entirely different system from the bottom to the top. The sound was 100% better. However, I can probably get my system to sound even better if I learned a little more about those settings.

Same here.  For the longest time I had the wrong settings.  Then I moved things around and played with it until I stumbled onto the right settings.  They sounded decent but not mind-blowing before.  Now they sound amazing.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Danny Richie on 14 Oct 2020, 11:18 pm
Okay, I'll do a video on that.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: SoCalWJS on 16 Oct 2020, 12:27 am
Okay, I'll do a video on that.
:beer: :dance: :hyper:

 :bounce: :bounce: :bounce:

(Yeah, I’m looking forward to this. I’m absolutely convinced I can make it better)
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Early B. on 16 Oct 2020, 12:56 am
Okay, I'll do a video on that.

Thank you, sir!!!  Been waiting a long time for this.

Please explain it to us like we're in the third grade. I learned more about this amp in the 30 seconds you spent talking about it on the last Tech Talk than I ever knew.   
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: RonP on 1 Dec 2020, 10:56 pm
Danny,

could you talk about at some point the differences between round speakers and the oblong speakers. My gut feeling is the
oblong ones are not as efficient. This is something I've always wondered about.


(https://i.imgur.com/xzjnncq.png)
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Hobbsmeerkat on 1 Dec 2020, 11:05 pm
Technically thats just a passive radiator, but its still an interesting question!  tho usually I usually only ever see oblong drivers used in automotive stereo systems, often in the rear where space is at a premium. My Dad's 72 Nova uses them.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: RonP on 2 Dec 2020, 12:59 am
Technically thats just a passive radiator, but its still an interesting question!  tho usually I usually only ever see oblong drivers used in automotive stereo systems, often in the rear where space is at a premium. My Dad's 72 Nova uses them.

Good to know, re: passive radiator.

Yeah my mustang in the 90s had them too.

Here
https://www.goldenear.com/products/triton-series?gktab=2

along the front

(https://www.goldenear.com/images/stories/products/triton_series/TritonReference_Overview.jpg)
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Bendingwave on 2 Dec 2020, 10:20 am
Oblong drivers aka 6X9's were mostly used in automotive sound systems due to limited space.  Oblong drivers do alright with the lower bass frequencies as they are less directional but at the higher frequencies they tend to not sound right due to the driver being uneven shape which in turn uneven dispersion creating a lot of coloration.

My 2 cents.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Tyson on 2 Dec 2020, 04:50 pm
Agreed, oblong drivers are good for bass and not so good for mids.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: tom739 on 6 Dec 2020, 04:50 am
I also look forward to the video tutorial on adjusting the A370 amp settings.
Thanks!
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: cjsailer on 15 Mar 2021, 11:21 pm
I also look forward to the video tutorial on adjusting the A370 amp settings.
Thanks!
Yes, I'd like to  up-vote for a settings tutorial on A370 servo amp as well.  I just got a notification that my order for the subwoofers are finally shipping.  I'd like to be able to bomb the bass proper!

I'd be interested to know when it's best to use line in versus high level in.  Does using a y-splitter for connecting both line level inputs have any drawbacks?

With all the settings, I'm sure there's a multi episode series here.
Title: Re: A link to all Tuesday Tech Talk video's.
Post by: Hypersonic on 10 Jul 2021, 06:56 pm
Thanks for the Tech Talks, good info on some core topics. I found the link here not on your YT channel.   

Suggestions for future talks:
1.  You have one on speaker measurements, I would like to know more about the hardware, software you use and analytic process on the measurements
2.  I remember covering network design in a required EE class - long forgotten (I am Aerospace), but i heard you mention calculated networks are not the best.  Without giving away secret sauce recipe could you share more on how you design networks for your speakers and the "fixes" you apply to manufactured speakers?