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Old 19th August 2019, 06:44 PM   #31
GM is offline GM  United States
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Location: Chamblee, Ga.
Quote:
Originally Posted by Dave R View Post
You might need some serious EQ or DSP to cut off the wild response peaks.....
Yeah, wondering why not a TH or to reduce much of its out of band 'hash', a bjorno type damped TP to reduce electronic intervention.

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Old 19th August 2019, 06:48 PM   #32
johnsurnamerobinson is offline johnsurnamerobinson
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Good bass is additive to the whole hi fi thing.Back in the 80-90s friends who heard my system decided to sell their souls simply to FEEL the sound.
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Old 19th August 2019, 06:52 PM   #33
bigdaddyrox4574 is offline bigdaddyrox4574  United States
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Quote:
Originally Posted by GM View Post
Yeah, couldn't figure out what the game plan was, so just went along, but since you're now folding it in a common way, wondering why the offset driver, void space when a little lower tuning won't hurt and for true sub duty [~2 octaves at most] the driver should be at the end or in your case offset at ~L*0.21.

GM
As far as the position of the driver and void space, I played around in hornresponse for some time trying to get rid of it, but just never did like the look of the resulting curve. I wanted to get the drop off as close to 10hz as rationally possible (I knew 8 hz would never happen with what I have to work with, but once I saw that 10 of 12 might be within reach, I went for it). As far as the folding, for some reason I got some idea in my head and "couldn't see the forest for the trees", so to speak. Had someone suggested something here, I would have given myself a big face-palm (like last night) and thanked them! I was just determined to make it work, and somehow during that process missed the best, most OBVIOUS option.
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Old 19th August 2019, 07:15 PM   #34
bigdaddyrox4574 is offline bigdaddyrox4574  United States
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I also have to say: "...just went along..."? Really? I thought we were here to help each other out, maybe catch someone's mistake before they waste a lot of wood. That's Ok. I'll hang my head and pout back over to my corner...

Anyway, seriously, my ego is not so inflated that I can't a handle any questioning of my judgement. That actually is why I'm here. There are so many brilliant and more experienced minds here that have probably already danced around pitfalls that I might be getting ready to fall into, that I am more than willing to hear their advice. If I decide to dive face first into the rabbit hole anyway, at least I will know what I am jumping into that way. I apologize if I ever gave the impression that I am not open to criticism; I just assumed that, if some here are even willing to question the likes of Tom Danley and David McBean, then surely I wouldn't need to give them permission to question me!

One more thing... not sure if I understand "offset at ~L*0.21". Can you elaborate?
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Old 19th August 2019, 07:21 PM   #35
johnsurnamerobinson is offline johnsurnamerobinson
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Been looking at the response of cornu horns,Seems to be disconect with peoples listening exp V flat response. Re hornres + Akabak. Acording to sims cornu should be non starter period !!!! Yet,???????
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Old 20th August 2019, 07:34 AM   #36
johnsurnamerobinson is offline johnsurnamerobinson
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Yes there are some VERY intelegent people on this site !!!
At 63 yrs and apassion since aged 10 Ive had my eyes opened by quite a bit since joining.
And better spellers as well

Last edited by johnsurnamerobinson; 20th August 2019 at 07:37 AM. Reason: add
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Old 20th August 2019, 02:25 PM   #37
bigdaddyrox4574 is offline bigdaddyrox4574  United States
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Indeed! The great thing about it is that there is every level of experience here, from people who are just discovering that it's possible to build your own loudspeakers without a college degree and produce good results, to award winning designers and everything in between... It is actually quite humbling, not to mention fun!

I'm "only" 45, but I, too, have been obsessed since around age 10, though I'm not sure exactly how old I was... that was when I took apart my mom's little GE radio and stuffed the speaker into a taped up shoe box with a hole cut out to see if it would make it sound better. After that, my dad taught me to solder and use woodworking tools! Then I bought an old stereo from my grandpa, "redesigned" the speakers and I haven't stopped since!
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