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  • Eh, not really as its still basically a modified design of Yamahas NS-20 Ear speakers in which someone stated that Yamaha copied Bertagni speakers and modified them....I haven't found the right length of wood for the right price yet so I am probably going to put this design on hold as I am not sure if its going to sound good or not as this is a different design then my modified Bertagni design which is proven satisfactory to my ears.

    I am playing my Bastat sat/sub DML panels right now and that Drum track sounds so friggen amazing, I wish yawl could hear it.

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    • Greetings DML builders! My first post - I am amazed by the DML technology! I have built Rich M's design and really enjoy them. Actually 6 of them (surround sound) - but mainly listen to stereo. I have slot loaded ob's running from 30-180 hz,, DML's 180 & up. Behringer electronic crossover, and EQ from it for the panels. I also run (2) 15's in infinite baffle for subs.

      Previously I was listening to the OB's with BG 50" planars and/or some electrostatic panels that I built. One of the planars died so that kind of forced me to dial in the DML's; and now I don't think I'll be going back. The Sheffield Drum and Track Record just confirmed that for me! My panels are 19 x 31, 1" Formular 150, unsupported DAEX32EP-4's.

      So now I want to improve on what I have. Unbiasedsound, I also have been thinking about the elephant shape, given the irregular shape should be positive to minimize standing waves or response peak/dips? I will do whatever it takes to get the best sound. Looks, size, damage protection, etc. all come after the sound quality (detail, live sounding, dynamic range, etc). So when I consider copying elements of Bertagni, Podium or Yamaha, I wonder what they would have built, if only for the best sound and had not had to consider manufacture-ability, consumer acceptance, cost, shipping, etc.?

      Thanks to all on this forum for what I have learned so far!

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      • Yea the ear shape is most likely for standing waves....The same way its recommended to place the exciter off center but instead of moving the exciter, Bertagni moves the panel by making it a off center shape.

        Same here as my main/first priority is superb sound quality and everything else is secondary for now.....My brother came over yesterday and asked me what the heck are those things and I told them they are my DIY speakers and he laughed because he said they look like Frankenstein speakers cosmetically but when he heard them he wasn't laughing any more as he was in awe of there sound quality....He told me as soon as I make them look nice cosmetically I could sell those speakers for a good amount of money.....Then my brother said are these speakers the same as those Pink square panels I built around 4 years ago and I said yes basically its the same concept but a totally different design and he said those pink panels sound nothing like these panels they don't even come close and this was from his memory from 4 years ago which just goes to show that the difference in the standard (Rich M.) design and my design is like night and day.

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        • Unbiased, please see the attached link. I know you and others have said that you prefer the EPS over XPS. I would definitely like to try it, but I need to know what type. Apparently there are fixed standard types for EPS. If you don't know the type number, how about the density? My brother is also into hifi. I brought mine to his house and paired them with his Carver sub. He was quite impressed and his son has since built a pair of panels! Thanks.

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          • Looks like the link didn't work. Picture attached.

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            • What ever floats your boat.
              Last edited by Unbiasedsound; 07-24-2019, 08:42 AM.

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              • Originally posted by Brewster56 View Post
                Greetings DML builders! My first post - I am amazed by the DML technology! I have built Rich M's design and really enjoy them. Actually 6 of them (surround sound) - but mainly listen to stereo. I have slot loaded ob's running from 30-180 hz,, DML's 180 & up. Behringer electronic crossover, and EQ from it for the panels. I also run (2) 15's in infinite baffle for subs.

                Previously I was listening to the OB's with BG 50" planars and/or some electrostatic panels that I built. One of the planars died so that kind of forced me to dial in the DML's; and now I don't think I'll be going back. The Sheffield Drum and Track Record just confirmed that for me! My panels are 19 x 31, 1" Formular 150, unsupported DAEX32EP-4's.

                So now I want to improve on what I have. Unbiasedsound, I also have been thinking about the elephant shape, given the irregular shape should be positive to minimize standing waves or response peak/dips? I will do whatever it takes to get the best sound. Looks, size, damage protection, etc. all come after the sound quality (detail, live sounding, dynamic range, etc). So when I consider copying elements of Bertagni, Podium or Yamaha, I wonder what they would have built, if only for the best sound and had not had to consider manufacture-ability, consumer acceptance, cost, shipping, etc.?

                Thanks to all on this forum for what I have learned so far!
                I also played that Sheffield Drum track on my revised Bastat sat/sub panels and it sounds amazing....The huge soundstage with 3d like imaging these panels produce is pretty unique as they sound (live) like someone is actually playing the drums in the room.

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                • The Sheffield Drum Track recording I have is a FLAC version. I listened to it on Spotify as well - I couldn't believe how poor it sounded in comparison. Usually I'm quite satisfied with Spotify sound, but this sounded like a blanket was in front of my speakers!

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                  • I bought a Dayton usb dac and it sounds way better then the small 3mm jack I was using before.

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                    • Guys ... do you think a larger panel might sound better for ub/midrange (200 - 3khz) keeping material, thickness and exciter the same? I can cutoff bottom and top to compare.

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                      • Not sure bout it sounding better but a larger panel would be able to produce more upper bass/midrange and will sound fuller then a smaller panel. Are you building a 3 way design?

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                        • Not sure bout it sounding better but a larger panel would be able to produce more upper bass/midrange and will sound fuller then a smaller panel. Are you building a 3 way design?

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                          • Fuller is what I am looking for, thx. I would like to get close to my all time favourite upper bass, the Kipsch LaScala.
                            Working on 4 way; 15" open baffle (a mint Klipsch K33), larger dml (ub), smaller dml for midrange plus bmr tweter.
                            The ub dml will not be taken anywhere near 3k.

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                            • Good luck with it let me know how it turns out.

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                              • Be slow going. Need power, etc; but will post as soon as I can hear something. Hoping to entice others to try multiple ways. Most reading only mentions subwoofers. I think we need good woofers that go to to 300hz or so, not the usual video related subwoofer to 150hz with the horrible sounding plate amps. This is stereo, not Star Wars' screaming fighters and lasers. Yes, I realize distortion is not as easily heard in bass.

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