Way to go Hobbs!! Danny for the waveguides, another option to consider is a 3D printing service bureau like xometry. You’d avoid tooling but be able to still scale. You could try a powder based 3D printing technology, like HP’s MultiJetFusion, rather than fused deposition modelling as the layer thickness of powder based printers is thinner so surface finish is much smoother. Full disclosure, I work at HP!
Danny, this is why I love your channel! The destail of your explanations usually cover any crazy questions I usually have! From what I've learned here and on my own, I can usually understand why different speakers sound the way they do and how to improve on them! ❤
Insight into the amount of work that excellent speaker designers put into speaker designs. A true labor of love. I have heard that tweeter and it is very musical.
That dip in the response with the cup at 3000Hz fits with a quarter wavelength resonnance/cancellation in the back cup. My reasoning: 3000Hz has a wavelength of 11.4cm and 1/4 of that is 2.85cm. That cup looks to be 2.85 cm deep! Trick is to make a shorter/ or longer cup to not create standing waves in the back cup! I dont think compliance is that comes into play in this situation. I've loaded ribbons before with diy waveguides and I've not had this issue with large suckouts in the response. Finding the reason behinds non wanted response changes can be tricky and often related to soundwave physics. Anyways I like these tech talks and it'll help ppl to understand what is a well designed speaker and what is just marketing hype.
The rear cup is way to well damped to allow any back wave. It is just dealing with back pressure, but I like how you are thinking. That very often applies.
IMO Joseph Crowe makes the best speakers in the world. (I'm biased towards high efficiency designs; big horns and big woofers) Unfortunately they're crazy expensive, so for budget minded people, DIY is still the way to go (or kits). There are great horns and compression drivers you can buy off the shelf, and great 15" woofers, and then you can use a miniDSP flex to do the crossover so that you can take measurements and tune it perfectly the way you want. With parametric EQ capability built in, you can also easily make such speakers full range or close to it. 20hz may be a challenge, but 30hz is easy, all day every day. And I don't mean -10 or -6 or -3db at 30hz... I mean effectively infinite output (being reasonable of course... but I mean as loud as any sane person wants to have it) at 30hz, so if you like your custom EQ curve with a BOOST, not flat, in the low bass, you can get boosted output to 30hz or below with a custom 15" design speaker, and even with affordable compression drivers and horns, either 1" or 1.4", there are multiple options that allow you to cross at 1khz or lower (even 700-800hz, without getting into a huge horn or a larger CD), which is absolutely no problem for a good pro 15" with the right specs. Yes the center to center spacing is bigger, so keep them mounted as close together as you can, and the vertical off axis is not going to be as good as a little speaker from Danny, I get that, but listening on-axis, you're not going to care, not if you prioritize effortless HUGE dynamics and impact. High sensitivity speakers also typically have the inherent advantage of sounding better at low volumes (counter-intuitively), and have great micro-dynamics. When it comes to distortion, they will always win, because the excursion required from 15" woofers and horn loaded CD's is SO tiny compared to small drivers and flat baffle dome tweeters, that when they're played at typical home listening levels, they're barely moving and the distortion is NIL. They just happen to also be capable of concert levels in your house, and bass that makes a sub utterly unnecessary for everything but movies. 1", and many modern 1.4" CDs can also stretch all the way from 1khz or lower to 15-20khz (depending on the horn and CD, and yes some beaming is unavoidable... they'll narrow up in the top octave, always... but you're listening on axis!), so you can easily make this a true full range 2-way design for simplicity. But as Crowe's designs demonstrate, in the higher end, sometimes crossing to another tweeter for content above 8-10khz can still bring further advantages, just like adding subs for the bottom octave/octave and a half would, but crossing at 80hz is not necessary, which is a good thing... that's not a great place to have to cross, the discontinuity is often audible, either due to timbre changes or localization... the lower you can cross, to a point, the better... let the subs do the LOW LOW stuff, while electric and upright bass or piano doesn't get into that crossover range at all, and is all done by the one woofer, keeping perfect tonality and continuity and imaging.
Jay recently did a rundown of his favorite speakers up to $20000, and a pair of those Joseph Crowe bastards was one of the two speakers that made his list in the $15,000 - 20,000 category. First time I've heard of them.
I am very pleased you have a protégée like Hobbs so GR-Research will last past us older folks! I would love to see an X-(S)LS Encore offering with the M-165/GR Neo 3 pairing. I know that may take some work, but I love my X-LS Encores and would be willing to give them to my son if those became available. 😁 Congrats Hobbs!
Just to let you know Danny, you have created a monster within me!😂😊I now have NO working speakers that I can listen to and two large rooms reverse engineering everything I can get my hands on for free. The only thing I have been able to buy (I am a disabled process engineer) is test equipment and some decent parts (caps, inductors, etc.). So now I have a little work fixing a few speakers that is going to generate a little cash. It’s been fun so far and has shown me a little light in this sometimes not so fair life we all live. Thank you! And well now I have to sell some of this stuff I have fixed and has completely overwhelmed my life 😂 and well now build something great I can listen to.
Wow, awesome to hear Hobbs did the development on this one, super excited to hear about customers listening impressions, VERY cool new product. Congrats GR crew. 👏🏼👍🏼
Wow, great and extensive research, that's going to be a killer little speaker. While not practical I love those huge waveguides you made, looks similar to what I've been playing around with on the big Heil AMT by adding the 3 inch round foam to both front edges and getting fantastic results.
The big ones remind me of the waveguides/controlled dispersion horns that Joseph Crowe makes for his excellent horn speakers with compression drivers. He always has great results for low extension as well.
Great job Hobbs, now it would be great to see an X-LS Encore type with the M-165/GR, Neo 3. in rear ported speaker box 13.75"H x 8.5"W which is exact golden ratio dimensions (multiply width by 1.618 = height) and required depth to get the base frequency down to 40hz or as close to that as possible for a speaker that does not necessarily require a sub, so that one could maybe spend a bit more on a good quality stereo amp to get the best out of these hopefully do it all bookshelf speakers, a tall order for sure, but I know you guys can do it.
Hi Danny, may I suggest adding a background light for your video presentation? A small light aimed at the curtains behind you will provide the separation between you and the speakers you are highlighting and the curtains. Try it with a flashlight first. I think you will like the results.
I think it's nearly perfect. The contrasting velvet black background creates impactfully sharp color pop for the relevant items of importance. I see a few other similiar comments, but I also see a few of those in favor. It looks good in my viewing via phone and an 85" Sony.
@@FOH3663 Yes indeed, the contrast is very good. From my background as a portrait photographer, adding a background light keeps the contrast but adds separation. This will benefit all those black ash and black satin speakers that Danny puts on his work table. If we want to get really fancy, we could add a hair/rim light for even further separation. :)
@@davidbardes8233 All valid points, agreed. Fascinating how there's often such a link between audio and photography. I never pursued portrait work, but I've been into photography, cinematography, ... since the 70's. Countless slides, print film, Super8mm, Super VHS, Hi8, then into DV, etc. Not portrait work per se, but weddings since the 80's. It's remarkable how many older audio dudes similarly dabble into visual capture. Thank you Appreciate the civil discourse.
@@FOH3663 Ha! it's true. And OMG weddings! Yikes, Mamiya RB67s with Vivitar 283 flashes attached with brackets and external battery packs. My back hurts just thinking about it!
Hopefully this means you will bring back a new version of the N3. I sold my similar Carnegie version to a friend when i got my NX-Oticas and i regularly hear them and still love them.
Planar magnetic tweeters seem almost as good as metal ribbons but have no reliability issues. They are by far my favorite tweeter type. I have been surprised to see so many AMT designs recently with how well the Katopn isodynamic tweeter from HiVi sounds. This is the most exciting I have been about any of your designs. Build a tower, and I will be your first customer. If you need marketing help, I could also help you. These should be your most favored speaker ever.
impressive speaker might be just what i am looking for, high end sound and small speaker, looks quite deep tho, maybe ported? i am looking for sealed. and with crossover that low and mtm version would work quite well and without not much added cost i think, then i could play louder or have more bass extension.
Looks really impressive, congrats Hobbs! If you were to use this in a small room home theater setup with subs for the front L/R, what would be a good center channel match, or any possibility that a NX Bravo center channel would be on the way?
Excellent vid. Love to own a pair. My Decware DNA's, my Hot Rodded ( No-rez, Sonicaps) Pedest'ale Tower speakers could stand some competition. I would go full boat with a pair. Danny, your Kung-fu is strong.
We've used the Purifi woofers. I like them better than ours below 100Hz, but above 1kHz or so our lighter weight moving mass drivers are faster and cleaner. It's a trade off. If you want it all go with the lighter weight faster drivers and use a larger woofer below 100Hz.
Could you do a video on the differences between a 2 way and 3 way? Benefits etc. if both measure relatively flat, what are the benefits of 3 way? Also love to see you do more studio monitors , ie Focal Shape, Adam Audio etc. even just testing them would be great info to inform buyers/users.
Since wave guides are so exacting in their design and functionality, could the application of finishes like some of the very popular brush on or spray on coatings have an effect on the performance of the wave guide or unintentionally “color” or “modify” the intended response in some negative fashion? Just wondering!
I was wondering if the shape of the horn er rather wave guide has anything in common with shapes of such. Like the traktrix shape or any other etc etc?
I haven't finished the video yet, but just wondering if there's any thoughts of upgrading or changing the woofer to go along with this tweeter or are you 100% happy with it's performance that there's no need to?
so it seems that the back cap creates a resonance at 750...800Hz but also: * resonance at 1500...1600Hz (double the frequency) * a kind of notch filter at 3kHz i think the lower resonance frequency has to do with the volume because it is practically a sealed box and the 3kHz dip might be a reflection because of the geometry of the cap. maybe the distance from the membrane to the end of the cap. the end of the cap could be shaped more like a cone etc. at the end the length and volume of the cap could be used to shape the frequency a bit. also light dampening would be interesting to try. at the end the waterfall spectrum is interesting too and we do not want to introduce too much resonances that efs up the timing of the signal. other than that, i like waveguides very much because it gives you the posibility to get more distance between the ears and the tweeter and you get the same distance like ear to woofer which gives you the right timing.
He was in one of the New Record Day videos on head phones one time, but he is a little more camera shy than I am. It is not easy, from what I have been told, to just turn on the camera and start talking and explaining. Sometimes I really don't know how I do it and by the next day wonder if I covered everything I had in my head or not. I have to watch the video to see what I said. :-)
@@dannyrichie9743 I feel with him. I do a live stream for new beekeepers every week, but I am still almost stressed out when hitting the "start" button and have to plan what I tell my audience.
@@ludgermerkens I honestly never rehearse, write out, or plan anything. I have an idea in my head or a mass of thoughts and I just hit record and start talking.
Incredible! How do you go about analyzing distortion and compression in terms of limitations of the driver? Does that change much from the results you get in the design stage of the driver vs the design of a speaker? Or is it basically just brand trust with Peerless?
Most of that is a misnomer. It really has no value to a point. Small changes in measured distortion don't really equate to what we hear. It is only when things really do South or really fall apart that things like distortion become apparent. Most speakers can be driven to points where they fall apart or compress but that usually comes well beyond normal listening levels. So it is not much of a concern.
@@dannyrichie9743 that's super helpful. I really appreciate you clarifying that. Perhaps it might be a worthwhile tech talk topic if it gets asked enough, but I've not really seen it come up. Thanks again!
Hi Danny. I’ve been in electronics for over 40 years and I have a question for you. I noticed phase plugs on the Dick Sequerra met 7’s. What do they do ? Thank you.
Hi Danny, would speakers stands be available for these special speakers coming? Would these speakers be able to be bolted to the speakers stands? Thanks in advance.
I wonder how much the MATERIAL of the waveguide affects the sound (if at all). Would a denser/deader plastic or even printable metal or ceramic-like material be better? JBL's new horn is a stone-like material.
This was fun. I geek out on details like this and it was interesting/shocking seeing how much difference the waveguide can make. That NX-Bravo looks really interesting, I can't wait to hear them. Oh... crap! Does this mean that I will finally have to build a set of GR Research speakers? 😁 Will these really coalesce close enough to work as desktop speakers? One caveat: for some reason I have a strong preference for 6 1/2" speakers over 5 1/4". Probably a combination of the slightly higher efficiency and slightly lower bottom end. Are you looking into doing an NX-LS Encore? I think that would be even more deadly!
Thanks for this video Danny very informative. I do have a question though, when people say that a speaker will work in a small to medium room, what is the measurements for a small medium or large room.? My room is 17‘ x 27‘ with an 8 x 10‘ alcove , now is that medium, large….? Again, thanks…
For most people in the world, that is a large room. For people here in the USA it is a medium sized room. In Texas, it's a small room. :-) Larger air spaces swallow up bottom end. You room is well suited for large speakers or the use of added subs.
@@dannyrichie9743 …. Thanks for the reply, everything in Texas is larger 😁 The info about the room sucking up the base is great information. Here in Connecticut my room is probably medium/large I would say. Thanks again.
When Ron did the comparison between the LGK 2.4 and XLS Encore I believe this is the speaker he made reference to which combined the strengths of both those speakers. I’ve been waiting for this announcement.
@@dannyrichie9743Can you share /remind us which one that was? Excellent explanation and presentation, and as one other comment noted maybe just add a rare upfiring flood light to illuminate the rear wall and give you video a greater sense of depth of image - something fans of your speakers could appreciate.
@@fonkenful Hang on. More information on that new stuff is coming. We are doing some really special things with the 3" LGK driver and the results were crazy good. The first model sets a new benchmark in imaging and sound stage layering as well as the quality of the vocal region.
@@dannyrichie9743 As a now retired DIYER, long time fan of 3 - 4” full range drivers and general fan of your speaker work, I’m looking forward to seeing that. I’m assuming Ron has, or will be making some of his excellent sound shed recordings with your new models?
@@fonkenful You will be very please with what I have created, and yes you will hear about them from Ron. I basically just created what he wanted and give him full input on everything.
Very interesting and thanks for the detailed information😁 despite the use of a dome tweeter, the results and your way of thinking seems to me very similar to the Satori Helios 9.5" 2-Way Speaker... I would even recommend you to look at it🙏... the crossover of the tweeter is 1.3kh! by the way is it one of the secret "new record day" ron speaker?😛
The M-130 has a vented pole piece 5.25" cone Plus, outer venting Bumped back plate Polymer chassis Light-weight, treated paper composite cone with new curvilinear shape
Danny, is there a crossover that can deal with a scanspeak tweeter and a 6 and a half woofer . without meshuring to bad. They was "borne" in the the year of 2000 ore somthing. I know its a stupid question but it is a project with a florestaning with a 10" scanspeak XL woofer at the lower end.? It has a cherry tree veneer. Never playd properly.
![เป็นไปได้ไหม - WanMai [Teaser] | 05-12-24](http://i.ytimg.com/vi/P5Uto6e453w/mqdefault.jpg)
Way to go Hobbs!! Danny for the waveguides, another option to consider is a 3D printing service bureau like xometry. You’d avoid tooling but be able to still scale. You could try a powder based 3D printing technology, like HP’s MultiJetFusion, rather than fused deposition modelling as the layer thickness of powder based printers is thinner so surface finish is much smoother. Full disclosure, I work at HP!
Yes to SLA and MJF! In the US I would suggest ProtoLabs and outside the US I have used JLBPCB, either one I would highly recommend.
Danny, this is why I love your channel! The destail of your explanations usually cover any crazy questions I usually have! From what I've learned here and on my own, I can usually understand why different speakers sound the way they do and how to improve on them! ❤
Insight into the amount of work that excellent speaker designers put into speaker designs. A true labor of love. I have heard that tweeter and it is very musical.
DAAAAAAMMMM those bagel wave guide responses were unreal flat!
Good for your hemorrhoids...
I like the MDF one very much!
Congratulations Hobbs!!! Well done!
That dip in the response with the cup at 3000Hz fits with a quarter wavelength resonnance/cancellation in the back cup. My reasoning: 3000Hz has a wavelength of 11.4cm and 1/4 of that is 2.85cm. That cup looks to be 2.85 cm deep! Trick is to make a shorter/ or longer cup to not create standing waves in the back cup! I dont think compliance is that comes into play in this situation. I've loaded ribbons before with diy waveguides and I've not had this issue with large suckouts in the response. Finding the reason behinds non wanted response changes can be tricky and often related to soundwave physics. Anyways I like these tech talks and it'll help ppl to understand what is a well designed speaker and what is just marketing hype.
The rear cup is way to well damped to allow any back wave. It is just dealing with back pressure, but I like how you are thinking. That very often applies.
Nice wave guide. Reminds me of the Joseph Crowe Horn No.1931 -- ES Front Horn for GRS PT6825 Planar Tweeter (goes down to 500 Hz)
My thoughts exactly!
Those have no top end though..not suitable for a tweeter IMO
IMO Joseph Crowe makes the best speakers in the world. (I'm biased towards high efficiency designs; big horns and big woofers) Unfortunately they're crazy expensive, so for budget minded people, DIY is still the way to go (or kits). There are great horns and compression drivers you can buy off the shelf, and great 15" woofers, and then you can use a miniDSP flex to do the crossover so that you can take measurements and tune it perfectly the way you want. With parametric EQ capability built in, you can also easily make such speakers full range or close to it. 20hz may be a challenge, but 30hz is easy, all day every day. And I don't mean -10 or -6 or -3db at 30hz... I mean effectively infinite output (being reasonable of course... but I mean as loud as any sane person wants to have it) at 30hz, so if you like your custom EQ curve with a BOOST, not flat, in the low bass, you can get boosted output to 30hz or below with a custom 15" design speaker, and even with affordable compression drivers and horns, either 1" or 1.4", there are multiple options that allow you to cross at 1khz or lower (even 700-800hz, without getting into a huge horn or a larger CD), which is absolutely no problem for a good pro 15" with the right specs. Yes the center to center spacing is bigger, so keep them mounted as close together as you can, and the vertical off axis is not going to be as good as a little speaker from Danny, I get that, but listening on-axis, you're not going to care, not if you prioritize effortless HUGE dynamics and impact. High sensitivity speakers also typically have the inherent advantage of sounding better at low volumes (counter-intuitively), and have great micro-dynamics. When it comes to distortion, they will always win, because the excursion required from 15" woofers and horn loaded CD's is SO tiny compared to small drivers and flat baffle dome tweeters, that when they're played at typical home listening levels, they're barely moving and the distortion is NIL. They just happen to also be capable of concert levels in your house, and bass that makes a sub utterly unnecessary for everything but movies. 1", and many modern 1.4" CDs can also stretch all the way from 1khz or lower to 15-20khz (depending on the horn and CD, and yes some beaming is unavoidable... they'll narrow up in the top octave, always... but you're listening on axis!), so you can easily make this a true full range 2-way design for simplicity. But as Crowe's designs demonstrate, in the higher end, sometimes crossing to another tweeter for content above 8-10khz can still bring further advantages, just like adding subs for the bottom octave/octave and a half would, but crossing at 80hz is not necessary, which is a good thing... that's not a great place to have to cross, the discontinuity is often audible, either due to timbre changes or localization... the lower you can cross, to a point, the better... let the subs do the LOW LOW stuff, while electric and upright bass or piano doesn't get into that crossover range at all, and is all done by the one woofer, keeping perfect tonality and continuity and imaging.
Jay recently did a rundown of his favorite speakers up to $20000, and a pair of those Joseph Crowe bastards was one of the two speakers that made his list in the $15,000 - 20,000 category. First time I've heard of them.
Great work Hobbs!!
I am very pleased you have a protégée like Hobbs so GR-Research will last past us older folks! I would love to see an X-(S)LS Encore offering with the M-165/GR Neo 3 pairing. I know that may take some work, but I love my X-LS Encores and would be willing to give them to my son if those became available. 😁 Congrats Hobbs!
Just to let you know Danny, you have created a monster within me!😂😊I now have NO working speakers that I can listen to and two large rooms reverse engineering everything I can get my hands on for free. The only thing I have been able to buy (I am a disabled process engineer) is test equipment and some decent parts (caps, inductors, etc.). So now I have a little work fixing a few speakers that is going to generate a little cash. It’s been fun so far and has shown me a little light in this sometimes not so fair life we all live. Thank you! And well now I have to sell some of this stuff I have fixed and has completely overwhelmed my life 😂 and well now build something great I can listen to.
Wow, awesome to hear Hobbs did the development on this one, super excited to hear about customers listening impressions, VERY cool new product. Congrats GR crew. 👏🏼👍🏼
I’ve been pretty satisfied with my X-series speakers and stopped looking for other speakers. But these NX Bravos look great and sound very compelling.
Been hearing about Hobbs for some years nows. Congratulations, all I hear is good things. Keep it up.
nice work, hobbs!
Wow, great and extensive research, that's going to be a killer little speaker. While not practical I love those huge waveguides you made, looks similar to what I've been playing around with on the big Heil AMT by adding the 3 inch round foam to both front edges and getting fantastic results.
very cool design Hobbs. unreal spec decay
Great stuff Hobbs.
What great information and well done video. Thanks Danny.
The big ones remind me of the waveguides/controlled dispersion horns that Joseph Crowe makes for his excellent horn speakers with compression drivers. He always has great results for low extension as well.
Way to go Hobbs and congrats GR Research
Hat tip to you Hobbs! and Danny for cutting the talent loose to see what they can do for your company.
Nice job Hobbs!!
Hobbs!! Great work
Great job Hobbs, now it would be great to see an X-LS Encore type with the M-165/GR, Neo 3. in rear ported speaker box 13.75"H x 8.5"W which is exact golden ratio dimensions (multiply width by 1.618 = height) and required depth to get the base frequency down to 40hz or as close to that as possible for a speaker that does not necessarily require a sub, so that one could maybe spend a bit more on a good quality stereo amp to get the best out of these hopefully do it all bookshelf speakers, a tall order for sure, but I know you guys can do it.
Hi Danny, may I suggest adding a background light for your video presentation? A small light aimed at the curtains behind you will provide the separation between you and the speakers you are highlighting and the curtains. Try it with a flashlight first. I think you will like the results.
Good tip. Thanks!
I think it's nearly perfect.
The contrasting velvet black background creates impactfully sharp color pop for the relevant items of importance.
I see a few other similiar comments, but I also see a few of those in favor.
It looks good in my viewing via phone and an 85" Sony.
@@FOH3663 Yes indeed, the contrast is very good. From my background as a portrait photographer, adding a background light keeps the contrast but adds separation. This will benefit all those black ash and black satin speakers that Danny puts on his work table. If we want to get really fancy, we could add a hair/rim light for even further separation. :)
@@davidbardes8233
All valid points, agreed.
Fascinating how there's often such a link between audio and photography.
I never pursued portrait work, but I've been into photography, cinematography, ... since the 70's.
Countless slides, print film, Super8mm, Super VHS, Hi8, then into DV, etc.
Not portrait work per se, but weddings since the 80's.
It's remarkable how many older audio dudes similarly dabble into visual capture.
Thank you
Appreciate the civil discourse.
@@FOH3663 Ha! it's true. And OMG weddings! Yikes, Mamiya RB67s with Vivitar 283 flashes attached with brackets and external battery packs. My back hurts just thinking about it!
Congrats to Hobbs. Good job! 🎉
Hopefully this means you will bring back a new version of the N3. I sold my similar Carnegie version to a friend when i got my NX-Oticas and i regularly hear them and still love them.
Planar magnetic tweeters seem almost as good as metal ribbons but have no reliability issues. They are by far my favorite tweeter type. I have been surprised to see so many AMT designs recently with how well the Katopn isodynamic tweeter from HiVi sounds.
This is the most exciting I have been about any of your designs. Build a tower, and I will be your first customer. If you need marketing help, I could also help you. These should be your most favored speaker ever.
Fantastic work!
impressive speaker might be just what i am looking for, high end sound and small speaker, looks quite deep tho, maybe ported? i am looking for sealed.
and with crossover that low and mtm version would work quite well and without not much added cost i think, then i could play louder or have more bass extension.
You're taking the right next steps with that tweeter. This is great!
Amazing work!
Also top video Danny tnx.
Looks amazing Danny. Can't wait to see the end product!!
Love watching your videos! Very informative and love your work. Keep it up!
Looks really impressive, congrats Hobbs! If you were to use this in a small room home theater setup with subs for the front L/R, what would be a good center channel match, or any possibility that a NX Bravo center channel would be on the way?
We may follow it with an NX MTM style version if there is a demand for it.
@@dannyrichie9743 Awesome! 🤞
Nice looking speakers Danny,
Im planning on buying a new pair of speakers in the next few months.
I'll keep checking your website.
Always like the Tech Talk-style videos.👍
Outstanding work Hobbs. Now I will wait for the MTM version, can anyone say N3?
Oh and you guys do incredible things!
Excellent vid. Love to own a pair. My Decware DNA's, my Hot Rodded ( No-rez, Sonicaps) Pedest'ale Tower speakers could stand some competition. I would go full boat with a pair. Danny, your Kung-fu is strong.
Thank you for all your hard work to share this knowledge
Would really like to see what Hobbs might do with a quality compression driver! Nice work.
Great looking little speaker.. I'm an old school JBL guy so wave guides speak to me..
Nice shaped speaker, i wish to have 3dB response mid 42Hz , purifi woofers etc.
We've used the Purifi woofers. I like them better than ours below 100Hz, but above 1kHz or so our lighter weight moving mass drivers are faster and cleaner. It's a trade off. If you want it all go with the lighter weight faster drivers and use a larger woofer below 100Hz.
This is cool and all but it would be nice to hear some more about future plans for the domed mid/tweeter pod your team has been working on
That's coming.
Lovely to see, Danny
I want those! I love anything horn or big or deep waveguides. don't care for dome tweeters on flat baffles. I like ribbons and AMT's too.
Good work!
What’s the best crossover frequency with a sub to keep that mid as distortion free as possible.
Something in the 60 to 80Hz range is good if you want to drive them hard.
Most impressive!
Great video.
This looks great. I would love to see what you can do with that AMT combined with the soft dome midrange from the last video
You should look at resin 3d printers. You could do more units at a time.
Does this new waveguide offer 45 to 60 degree constant horizontal beaming? How's the vertical polar response?
Fascinating
Could you do a video on the differences between a 2 way and 3 way? Benefits etc. if both measure relatively flat, what are the benefits of 3 way? Also love to see you do more studio monitors , ie Focal Shape, Adam Audio etc. even just testing them would be great info to inform buyers/users.
Since wave guides are so exacting in their design and functionality, could the application of finishes like some of the very popular brush on or spray on coatings have an effect on the performance of the wave guide or unintentionally “color” or “modify” the intended response in some negative fashion?
Just wondering!
Hobbs Makes it to the NFL ! ! ! Congratulations Hobbs! 🎉
Danny! Any ideas about doing a speaker designed to be closer to a rear wall, I just don’t have space given the 1m++ you recommend with the Encores 😢
I was wondering if the shape of the horn er rather wave guide has anything in common with shapes of such. Like the traktrix shape or any other etc etc?
How to implement big waveguide? Mold and cast. Pour in with a material that hardens. Ship it
You can have a 3D printing service like slant 3D print them for you...
Danny, have you thought about making a larger, three-way version? Now that the most difficult part of the design work has been done (one assumes)?
We could....
2.5 way perhaps?
@@JohnRogers0014 We'll see.
Speak to folks who do plastic molding. You can blow out those waveguides easily. I don't know what plastic would work best.
Nice, hope that tweeter can make it to other models as well.
I haven't finished the video yet, but just wondering if there's any thoughts of upgrading or changing the woofer to go along with this tweeter or are you 100% happy with it's performance that there's no need to?
For this application our little M-130 is about as good as they come.
Changing the woofer also means changing the box and crossover, so it's not impossible to use this driver with other woofers.
I'm interested in buying a kit - what will they be called and when will they be available?
Damn I gotta get to the audio nirvana AKA GR Research for an experience of audio excellence
so it seems that the back cap creates a resonance at 750...800Hz but also:
* resonance at 1500...1600Hz (double the frequency)
* a kind of notch filter at 3kHz
i think the lower resonance frequency has to do with the volume because it is practically a sealed box
and the 3kHz dip might be a reflection because of the geometry of the cap. maybe the distance from the membrane to the end of the cap.
the end of the cap could be shaped more like a cone etc. at the end the length and volume of the cap could be used to shape the frequency a bit. also light dampening would be interesting to try.
at the end the waterfall spectrum is interesting too and we do not want to introduce too much resonances that efs up the timing of the signal.
other than that, i like waveguides very much because it gives you the posibility to get more distance between the ears and the tweeter and you get the same distance like ear to woofer which gives you the right timing.
The waveguide did not create any resonance issue.
@@dannyrichie9743 yes, but the back cap seems to do so, right?
@@stefanweilhartner4415 If there was a resonance from it then it would show up in the impedance measurement. It does not.
@@dannyrichie9743 but he did not show an impedance measurment with the cap, or did he? I guess he didn't use the cap at all.
@@stefanweilhartner4415 We did measure it both ways.
next step in the evolution of hobbs - he comes in front of the camera and tells from his perspective how he did the development.
He was in one of the New Record Day videos on head phones one time, but he is a little more camera shy than I am. It is not easy, from what I have been told, to just turn on the camera and start talking and explaining. Sometimes I really don't know how I do it and by the next day wonder if I covered everything I had in my head or not. I have to watch the video to see what I said. :-)
@@dannyrichie9743 I feel with him. I do a live stream for new beekeepers every week, but I am still almost stressed out when hitting the "start" button and have to plan what I tell my audience.
@@ludgermerkens I honestly never rehearse, write out, or plan anything. I have an idea in my head or a mass of thoughts and I just hit record and start talking.
Incredible! How do you go about analyzing distortion and compression in terms of limitations of the driver? Does that change much from the results you get in the design stage of the driver vs the design of a speaker? Or is it basically just brand trust with Peerless?
Most of that is a misnomer. It really has no value to a point. Small changes in measured distortion don't really equate to what we hear. It is only when things really do South or really fall apart that things like distortion become apparent. Most speakers can be driven to points where they fall apart or compress but that usually comes well beyond normal listening levels. So it is not much of a concern.
@@dannyrichie9743 that's super helpful. I really appreciate you clarifying that. Perhaps it might be a worthwhile tech talk topic if it gets asked enough, but I've not really seen it come up. Thanks again!
I'd like to see the comparison charts off axis with the rods vs without. It should help maintain the upper highs off axis.
The horizontal off-axis was overall very similar, the main differences was a roughly 1db boost between 6-9Khz.
Hi Danny. I’ve been in electronics for over 40 years and I have a question for you. I noticed phase plugs on the Dick Sequerra met 7’s. What do they do ? Thank you.
Hi. I was surprised that I didn't see the graphs of the impedance curves on your website for the drivers. Why don't you have them listed?
We'll add that.
Hi Danny, would speakers stands be available for these special speakers coming? Would these speakers be able to be bolted to the speakers stands? Thanks in advance.
I wonder how much the MATERIAL of the waveguide affects the sound (if at all). Would a denser/deader plastic or even printable metal or ceramic-like material be better? JBL's new horn is a stone-like material.
In my experience it does not really matter so long as there is no ringing from it.
The cliff notes of this episode might read..."diffraction is not your friend".
Imagine a variable wave guide ...😮
So do you use the back cup or not or is it a preference?
In a box speaker the back has to be sealed off from the woofer.
Very informative
This was fun. I geek out on details like this and it was interesting/shocking seeing how much difference the waveguide can make.
That NX-Bravo looks really interesting, I can't wait to hear them. Oh... crap! Does this mean that I will finally have to build a set of GR Research speakers? 😁 Will these really coalesce close enough to work as desktop speakers?
One caveat: for some reason I have a strong preference for 6 1/2" speakers over 5 1/4". Probably a combination of the slightly higher efficiency and slightly lower bottom end. Are you looking into doing an NX-LS Encore? I think that would be even more deadly!
Danny. What do you think of spinorama measurements like the ones erinsaudiocorner does?
When does a waveguide become a horn and vice versa?
Design wise, you should make a Buchrdt speaker instead a cookie cutter design
Bull nose edge design looks best on speakers
so coax speakers would suck with a moving waveguide (woofer)?
Not necessarily, it just depends on how well the coax is designed. and how low the woofer plays.
fascinating stuff tweeters are super picky
Could have them made out of solid cast iron. Lost sand method. Couldnt be that expensive.
Now you have me very interested.
👍 Nice Were you being Hobb's Calvin?
Can you cast produce that big waveguide?
Thanks for this video Danny very informative. I do have a question though, when people say that a speaker will work in a small to medium room, what is the measurements for a small medium or large room.? My room is 17‘ x 27‘ with an 8 x 10‘ alcove , now is that medium, large….?
Again, thanks…
For most people in the world, that is a large room. For people here in the USA it is a medium sized room. In Texas, it's a small room. :-) Larger air spaces swallow up bottom end. You room is well suited for large speakers or the use of added subs.
@@dannyrichie9743 …. Thanks for the reply, everything in Texas is larger 😁
The info about the room sucking up the base is great information. Here in Connecticut my room is probably medium/large I would say. Thanks again.
When Ron did the comparison between the LGK 2.4 and XLS Encore I believe this is the speaker he made reference to which combined the strengths of both those speakers. I’ve been waiting for this announcement.
Nope, this one isn't it.
@@dannyrichie9743Can you share /remind us which one that was? Excellent explanation and presentation, and as one other comment noted maybe just add a rare upfiring flood light to illuminate the rear wall and give you video a greater sense of depth of image - something fans of your speakers could appreciate.
@@fonkenful Hang on. More information on that new stuff is coming. We are doing some really special things with the 3" LGK driver and the results were crazy good. The first model sets a new benchmark in imaging and sound stage layering as well as the quality of the vocal region.
@@dannyrichie9743 As a now retired DIYER, long time fan of 3 - 4” full range drivers and general fan of your speaker work, I’m looking forward to seeing that. I’m assuming Ron has, or will be making some of his excellent sound shed recordings with your new models?
@@fonkenful You will be very please with what I have created, and yes you will hear about them from Ron. I basically just created what he wanted and give him full input on everything.
👌
Very interesting and thanks for the detailed information😁 despite the use of a dome tweeter, the results and your way of thinking seems to me very similar to the Satori Helios 9.5" 2-Way Speaker... I would even recommend you to look at it🙏... the crossover of the tweeter is 1.3kh!
by the way is it one of the secret "new record day" ron speaker?😛
I haft to say I'm happy with the x series but I would like to build and have NX series now I'd like to have these as well
Price will be a key , as always . How complicated is the crossover?
What size is the woofer?
The M-130 has a vented pole piece
5.25" cone
Plus, outer venting
Bumped back plate
Polymer chassis
Light-weight, treated paper composite cone with new curvilinear shape
Price for a pair of your new speakers?
Danny, is there a crossover that can deal with a scanspeak tweeter and a 6 and a half woofer . without meshuring to bad. They was "borne" in the the year of 2000 ore somthing. I know its a stupid question but it is a project with a florestaning with a 10" scanspeak XL woofer at the lower end.? It has a cherry tree veneer. Never playd properly.
I've worked with most of their drivers and almost all of their earlier ones. So anything is possible, within reason.
When you ship to Europe these great drivers? Or is it impossible cos its too expensive?
We ship to Europe all the time.
@@dannyrichie9743 Is there a reseller in EU?
@@jartzaparza It is cheaper to buy direct with no dealers (no markups) and pay the shipping cost.