mattjtaylor2809 Posted December 3, 2020 Author Share Posted December 3, 2020 If I only I spoke Dutch.....unless there is an English translation? Amazing how much info is out there. 27 minutes ago, tesla13BMW said: http://jdm12.ch/Audio/2016_Windows-DSP.asp gives you an idea of what is involved. Thank fully I have someone who has gone down this route and will assist as I'm only just getting into anything other than vinyl and cd . The other challenge will be getting the analogue from the LP12 into the system. You're heads spinning I enjoy the learning though! 32 minutes ago, deblur said: Saw this on Audio Dandy website. http://www.modelpromo.nl/Liionidas Open Baffle Platform.htm Very reasonable cost. I am using AE 15" drivers in sealed box subs. Very happy. You can't go wrong with their drivers if in your budget. Can these AW 15" drivers be used OB or do they need to be in a cabinet? Link to comment Share on other sites More sharing options...
peterpan Posted December 3, 2020 Share Posted December 3, 2020 On 01/12/2020 at 6:17 PM, mattjtaylor2809 said: I could end up just buying some Spatial's or PureAudioProject or speakers made by Walter Liederman (Emerald Physics). I have some spatial speakers that you would be welcome to listen to if you like to get an idea of sound? I have modified the xover with better caps and inductors which improved them a fair bit imho cheers Peter Link to comment Share on other sites More sharing options...
tesla13BMW Posted December 3, 2020 Share Posted December 3, 2020 5 minutes ago, mattjtaylor2809 said: If I only I spoke Dutch.....unless there is an English translation? Hmm mine comes up in English - maybe I have auto translate??? Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 3, 2020 Author Share Posted December 3, 2020 16 hours ago, peterpan said: I have some spatial speakers that you would be welcome to listen to if you like to get an idea of sound? I have modified the xover with better caps and inductors which improved them a fair bit imho cheers Peter Hi Peter, Yes please, I think the more I listen to OB speakers, the better at this stage. I'll be back in touch. Matt Link to comment Share on other sites More sharing options...
Guest niterida Posted December 3, 2020 Share Posted December 3, 2020 I haven't read all the posts here but I would just like to say that IMO OB speakers look sooooo much better. I would gladly have them in my room just for that reason alone Good luck with yours. Link to comment Share on other sites More sharing options...
MattyW Posted December 4, 2020 Share Posted December 4, 2020 (edited) Just use Google Translate to translate pages that are not in English. See here: https://translate.google.com/translate?sl=auto&tl=en&u=http://www.modelpromo.nl/Liionidas%20Open%20Baffle%20Platform.htm If I had my time over I'd get this and install a pair of Silver 10 and W15 drivers and be done with it. Incredible value. Edited December 4, 2020 by MattyW 1 Link to comment Share on other sites More sharing options...
Upgrayed Posted December 4, 2020 Share Posted December 4, 2020 21 hours ago, mattjtaylor2809 said: Can these AW 15" drivers be used OB or do they need to be in a cabinet? AE do dipole drivers, especially designed to work in an open baffle. Depending on room size you may need 2 per side to overcome cancellations, an effect of open baffle design. Link to comment Share on other sites More sharing options...
gemini07 Posted December 4, 2020 Share Posted December 4, 2020 5 hours ago, mattjtaylor2809 said: Yes please, I think the more I listen to OB speakers, the better at this stage. I'll be back in touch. Matt @mattjtaylor2809 Likewise - I have similar speakers to PeterP. Matt, you are very welcome to come over for a listen. Mine are the Spatial Hologram M3 Turbo. Cheers, G Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 4, 2020 Author Share Posted December 4, 2020 2 hours ago, MattyW said: Just use Google Translate to translate pages that are not in English. See here: https://translate.google.com/translate?sl=auto&tl=en&u=http://www.modelpromo.nl/Liionidas%20Open%20Baffle%20Platform.htm If I had my time over I'd get this and install a pair of Silver 10 and W15 drivers and be done with it. Incredible value. Thanks for the translation, I was trying to do this & you then sent the link. Looks like you can buy the drivers he uses which the author rated more highly than his PureAudioProject drivers....which are supposed to be pretty good! https://www.lii-audio.com/shop/ I've also downloaded the specs for his Liionidas design, not my favorite design but certainly easier enough to make, especially with the specs? 1 Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 4, 2020 Author Share Posted December 4, 2020 Thinking, these x2 would make a nice pair, although I could keep both 15"? https://www.lii-audio.com/product/one-pair-12-inch-full-range-speaker-driver-f-12/ https://www.lii-audio.com/product/15-inch-woofer-1-pair-2pcs-for-bass-compensation-of-open-baffle-or-cabinet-w-15/ Link to comment Share on other sites More sharing options...
Jone5y Posted December 4, 2020 Share Posted December 4, 2020 1 hour ago, gemini07 said: Mine are the Spatial Hologram M3 Turbo. Have you been tempted by the M3 Sapphires at all? Link to comment Share on other sites More sharing options...
frednork Posted December 4, 2020 Share Posted December 4, 2020 If there are any Melb folks willing to demo their OB setup I am keen to have a listen. Has been a long time since I have heard some. Would love to hear the puraudioprojects especially but any / all are of interest. Link to comment Share on other sites More sharing options...
MattyW Posted December 4, 2020 Share Posted December 4, 2020 43 minutes ago, mattjtaylor2809 said: Thanks for the translation, I was trying to do this & you then sent the link. Looks like you can buy the drivers he uses which the author rated more highly than his PureAudioProject drivers....which are supposed to be pretty good! https://www.lii-audio.com/shop/ I've also downloaded the specs for his Liionidas design, not my favorite design but certainly easier enough to make, especially with the specs? Keep in mind that the F15 are an older driver. The Crystal are better, and Silver better again. Leon rates the silver as the best he's used. He's an active member on a few Facebook speaker groups. Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 4, 2020 Author Share Posted December 4, 2020 Looking at the SPL Vs Frq charts, the Silver 8 chart doesn't look that great with a dB diff of 20+ between 20-100 Hz whereas the Crystal 10 only seems to have a variance of about 10 dB for the same frequency range? Crystal 10 $999 US Pair - only 10 dB diff between 20-10 Hz & nice flat curve thereafter. They do suggest best driven via low power tubes but I have Rogue Audio M-180 monoblocks @ 180 watts ea. side? Silver 8 - $399 Pair - 20 dB diff between 20 - 100 Hz F-15 Full Range Driver - $399 pair - also roughly 20 dB diff between 20-100 Hz Finally, this is the range in dB of the W-15 woofer Maybe all this doesn't matter when in combination with the F15 & with his XO? I'd prefer a 10 - 15" full range driver to complement with woofer but the Silver 10 at $1,199 US is starting to become a bit too expensive for a "side project" but as he says in the article, they are exchangeable as the XO will support all combos? Am I looking at the wrong things? Cheers Matt Link to comment Share on other sites More sharing options...
gemini07 Posted December 4, 2020 Share Posted December 4, 2020 1 hour ago, Jone5y said: Have you been tempted by the M3 Sapphires at all? Not me - no. I'm quite happy with what I have. They do the job for both stereo and HT. Link to comment Share on other sites More sharing options...
MattyW Posted December 4, 2020 Share Posted December 4, 2020 17 minutes ago, mattjtaylor2809 said: Looking at the SPL Vs Frq charts, the Silver 8 chart doesn't look that great with a dB diff of 20+ between 20-100 Hz whereas the Crystal 10 only seems to have a variance of about 10 dB for the same frequency range? Crystal 10 $999 US Pair - only 10 dB diff between 20-10 Hz & nice flat curve thereafter. They do suggest best driven via low power tubes but I have Rogue Audio M-180 monoblocks @ 180 watts ea. side? Silver 8 - $399 Pair - 20 dB diff between 20 - 100 Hz F-15 Full Range Driver - $399 pair - also roughly 20 dB diff between 20-100 Hz Finally, this is the range in dB of the W-15 woofer Maybe all this doesn't matter when in combination with the F15 & with his XO? I'd prefer a 10 - 15" full range driver to complement with woofer but the Silver 10 at $1,199 US is starting to become a bit too expensive for a "side project" but as he says in the article, they are exchangeable as the XO will support all combos? Am I looking at the wrong things? Cheers Matt Supposedly the Silver 10 sound noticeably better than the Crystal 10 in his baffles. I only know what he's posted online. Link to comment Share on other sites More sharing options...
niss_man Posted December 4, 2020 Share Posted December 4, 2020 I've recently built my first open baffle project being the "lionidas" using W15 woofer and Fast 8 (wide band) drivers. In my room they measure to 30Hz before dropping off which is quite the feat for a passive crossover open baffle design. 3 3 Link to comment Share on other sites More sharing options...
Jone5y Posted December 4, 2020 Share Posted December 4, 2020 3 hours ago, gemini07 said: Not me - no. I'm quite happy with what I have. They do the job for both stereo and HT. Yeah I'd love some but very hard to come by. Anyhoo, enough of my off topic questions Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 4, 2020 Author Share Posted December 4, 2020 A little taste... 8” full range driver in very rudimentary OB design. Very impressive immersive sound with such a wide vocal. Not the last word in bass response but much better than you would think, Adding a 15” woofer will sort that Link to comment Share on other sites More sharing options...
soundbyte Posted December 4, 2020 Share Posted December 4, 2020 Having been playing with OB designs for a number of years I think that the best bass comes from at least 2 X 15 inch drivers mounted in a V located in the middle of the other drivers. That location will not be an easy sell but I think it is the best. An issue with that is that the connections for the channels need to be swapped side to side, LH channel bass to the RH bass speaker and RH channel bass to the LH bass speaker. I know it sounds weird to wire this way but it is easy to try but worth the effort. The use of a miniDSP or similar will also aid in getting the frequency response, levels and phase to be more easily sorted rather than using passive components. Try to use drivers that need little or no crossover components (natural roll offs) and are of high efficiency. I wish you well in your endeavours, the effort in getting an OB system up and running, is in my opinion very worthwhile. 1 Link to comment Share on other sites More sharing options...
niss_man Posted December 5, 2020 Share Posted December 5, 2020 Here is a photo of my speakers using an inferior Passive crossover design of a proffesional speaker designer Leon Huijgen. The design can be found http://www.modelpromo.nl/The Liiondias Open Baffle Speaker.htm or on facebook group Lii Audio Hifi Drivers & Speakers Team or on Leons FB posts. 3 1 Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 5, 2020 Author Share Posted December 5, 2020 I think I’ve downloaded this specs for this design. which full range driver did you pick, you happy with the overall sound, bass response? Link to comment Share on other sites More sharing options...
MattyW Posted December 5, 2020 Share Posted December 5, 2020 5 minutes ago, niss_man said: Here is a photo of my speakers using an inferior Passive crossover design of a proffesional speaker designer Leon Huijgen. The design can be found http://www.modelpromo.nl/The Liiondias Open Baffle Speaker.htm or on facebook group Lii Audio Hifi Drivers & Speakers Team or on Leons FB posts. I'd not call passive inferior at all, though I know there are those that do. 1 Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 5, 2020 Author Share Posted December 5, 2020 I’ll post the XO specs soon as I may need some help to understand the basics & any areas you believe we could improve.....I appreciate this could change depending on speaker combo etc. Link to comment Share on other sites More sharing options...
mattjtaylor2809 Posted December 5, 2020 Author Share Posted December 5, 2020 (edited) Righteo....here goes me being stoopid. Basics... I'm assuming an Inductor (to reduce HF going to the woofer?) I'm not sure how to read the specs, is x5 6mH....Low RDC?? These are Capacitors? (reducing low freq to tweeters)? Are these then depicting resistors? (reducing the amount of power directed to each speaker)? Is this saying x1 1.2Ohm or is it x1 2 Ohm? x6 8 ohm....20 watts? The schematic also suggest this design has x2 woofers or is this just a dipole design of the W-15 which has x2 different binding posts? Finally, is this suggesting there is a 2nd tweeter....I don't see this in the pictures of the actual speakers? As I said, I'm a newby at this, I enjoy the learning though. Cheers Matt Edited December 5, 2020 by mattjtaylor2809 1 Link to comment Share on other sites More sharing options...
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