The interest was extremely low.
I suspect that will probably also be the case for the Linkwitz Transform filter option in Hornresp, but for the sake of completeness the component values will be provided in the next update.
The interest was extremely low.
That's extremely nice of youI suspect that will probably also be the case for the Linkwitz Transform filter option in Hornresp, but for the sake of completeness the component values will be provided in the next update.
I still plan to construct with Martin King’s or another BLH to achieve a little bass gain from my fullrange driver but in the hornresp simulation of it the response has dips and peaks I assume can be heard. However Martin’s simulation worksheets at the far field listening position looks smoother. If that doesn’t work out, a closed box project using this technique looks promising. I suppose additional power from the amplifier is needed to support the bass gain. My 2 1/2 and 6 watt valve amps probably won’t cut it. Not that I understand it to a great degree, output impedance of tube amps might require an additional buffer.Not at the moment, but I can consider adding the feature if there is sufficient demand.
I suspect that will probably also be the case for the Linkwitz Transform filter option in Hornresp, but for the sake of completeness the component values will be provided in the next update.
Biquads, either digital (IIR) or analog are the same, so yes.In DSP, I expect it will use fewer processing blocks as well.
I have designed and built back loaded horns since 1994. Even 2 to 3 db ripples are insignificant in real use. Your room does much much worse than this and you listen happily. Sometimes we get paralysis from analysis.I still plan to construct with Martin King’s or another BLH to achieve a little bass gain from my fullrange driver but in the hornresp simulation of it the response has dips and peaks I assume can be heard. However Martin’s simulation worksheets at the far field listening position looks smoother. If that doesn’t work out, a closed box project using this technique looks promising. I suppose additional power from the amplifier is needed to support the bass gain. My 2 1/2 and 6 watt valve amps probably won’t cut it. Not that I understand it to a great degree, output impedance of tube amps might require an additional buffer.
Sometimes?Sometimes we get paralysis from analysis.
Oh I don't suffer from that. But I work with a lot of people that do. Its a common thing in engineering. Scared to pull the pin and throw the grenade. You do need o do your home work, but at some point we all need to try!Sometimes?
Or just not knowing when to take a step back and think for a second that what you're doing or looking at makes sense or is actually the stuff you want to know to being withOh I don't suffer from that. But I work with a lot of people that do. Its a common thing in engineering. Scared to pull the pin and throw the grenade. You do need o do your home work, but at some point we all need to try!
Well that is experience and engineering. And many times we make mistakes. But from those mistakes come the solutions and sometimes the real innovations.Or just not knowing when to take a step back and think for a second that what you're doing or looking at makes sense or is actually the stuff you want to know to being with
Or just how it all sits within context, aka significance/order of magnitude.
Mark, do you use corner ‘deflector’s’??I have designed and built back loaded horns since 1994. Even 2 to 3 db ripples are insignificant in real use. Your room does much much worse than this and you listen happily. Sometimes we get paralysis from analysis.
That depends. If I am doing a back loaded horn where I want as little midrange as I can engineer out the answer is no corners. No corners seems to help cancel out a lot more midrange. If I am hoping for a wideband system yes, do the corners. Devilish they can be. The first horn I built was the Mau horn, for a fullrange 6.5 driver. That was 1994. All reflectors all over the place. If I was to do something similar now I would not use one corner! And I would properly size a coupling chamber and probably line it with rockwool to act as an absorber. Last trick I use is exit out the rear of the enclosure. If you are against a wall you have a lot better loading and a lot less ripple. So design it in 2Pi in Hornresp, and then in the real world you place it is 1 Pi perhaps 0.5 Pi over a limited frequency bandwidth when you consider North American timber construction and you get a rather nice response.Mark, do you use corner ‘deflector’s’??
Oh tell me about it. I grew up in the sticks. I think we are near the same age ( 54 ) and there simply were no resources other than Radioshack and the Weems book. Partially useful but mostly cookbook formulas. No engineering. Now! Wow!! Same goes for testing. What we had to do in the 80's versus what we can do now for pocket change. My first Loudspeaker Design Cookbook was the orange one I think the 3rd edition. That was a godsend (Thanks Mr. Dickason! It's all your fault!) By that time I lived near Ottawa and the hallowed NRC and I got into their technical library and I started actually learning. Still do!"But from those mistakes come the solutions and sometimes the real innovations."
Yup. When I built my first speaker, oh it sounded like sweet a$$. Really, really bad. But then I investigated to find out why, and out of those investigations came all the notes that eventually became my website, www.diysubwoofers.org. The DIYers these days don't realise how much easier they have it with all the s/w design tools available now ...
Your bandpass.xls is my backup to HR!www.diysubwoofers.org. The DIYers these days don't realise how much easier they have it with all the s/w design tools available now ...