Greets!
Hmm, unless peak to peak [p-p, p/p] is specifically noted, then Xmax = 26 mm Hvc - 10 mm Hag/2 = 16/2 = 8 mm, so not sure how you arrived at 4 mm, but maybe this will help visualizing Xmax: http://www.subwoofer-builder.com/voice-coil.gif
Specs look good for any box alignment, so doing a basic low [2:1] CR TH yields a theoretical ~125 dB/800 W/2pi from ~40-160 Hz without exceeding Xmax. Load the file to view.
GM
Hi Gm
So my understanding and calculations for xmax derived at 8mm also, however if the simulation is means to peak, would it not be half the xmax value of 8mm?
4mm forward and 4mm back from point of rest giving us our total xmax value of 8mm in displacement
I would assume that 8mm in one direction would run the voice coil to the brink of being out the air gap?
Thank you so much for the help, much appreciated!
So my understanding and calculations for xmax derived at 8mm also, however if the simulation is means to peak, would it not be half the xmax value of 8mm?
4mm forward and 4mm back from point of rest giving us our total xmax value of 8mm in displacement
I would assume that 8mm in one direction would run the voice coil to the brink of being out the air gap?
Thank you so much for the help, much appreciated!
Hi Gm
So my understanding and calculations for xmax derived at 8mm also, however if the simulation is means to peak, would it not be half the xmax value of 8mm?
4mm forward and 4mm back from point of rest giving us our total xmax value of 8mm in displacement
I would assume that 8mm in one direction would run the voice coil to the brink of being out the air gap?
Thank you so much for the help, much appreciated!
Ok it makes sense now, thanks i see how I have got the wrong idea!
Correct, but 8mm in the other direction does the same, so that the maximum peak-to-peak displacement is 8 mm + 8 mm = 16 mm.
The mean-to-peak excursion (Xmax ) is 16 mm / 2 = 8 mm.
In the attached sketch drawn to scale, the short top horizontal line represents the air gap / magnet width of 10 mm and the longer horizontal line just underneath represents the voice coil width of 26 mm. The centre point of the voice coil is indicated by the short vertical line. The voice coil is shown in the neutral position. Looking at the two sets of lines below you can see that for the limit of travel in each direction, the overall (peak-to-peak) excursion of the voice coil is 16 mm.
Attachments
This makes more sense now, thank you all - I will be uploading some designs that I have run as im finding much better results.
How to down load all of my HR files?
Hi there: Due to a computer problem, I need to down load all of my HR files from an off line computer to a zip drive for further use/recovery. on another computer. Need help in making a mass down load (about 750 files), from version HR22 to a zip drive. regards, Michael
Hi there: Due to a computer problem, I need to down load all of my HR files from an off line computer to a zip drive for further use/recovery. on another computer. Need help in making a mass down load (about 750 files), from version HR22 to a zip drive. regards, Michael
Hornresp.dat file
Hi there D: Thanks, I'll try that... Curious situation with old Gateway/Microsoft OS, where the computer fails to respond to turn on button. I followed several web advisors and the one that sometimes works, is to remove the battery, turn the computer upside down, depress the on button, hold it down (actually up on the inverted computer) for 30seconds+-! Thought this was a joke and laughed a lot, until, while showing my wife the joke, the computer came to life! The computer still cuts off randomly and still fails to start consistently, so I'm working at migrating away rom it. thanks again Dan...regards, Michael
Hi there D: Thanks, I'll try that... Curious situation with old Gateway/Microsoft OS, where the computer fails to respond to turn on button. I followed several web advisors and the one that sometimes works, is to remove the battery, turn the computer upside down, depress the on button, hold it down (actually up on the inverted computer) for 30seconds+-! Thought this was a joke and laughed a lot, until, while showing my wife the joke, the computer came to life! The computer still cuts off randomly and still fails to start consistently, so I'm working at migrating away rom it. thanks again Dan...regards, Michael
@ j.michael droke
If you can take out the hard drive & connect it to another computer, usually by internal connections, then you can easily transfer all your files to the newer PC.
If you can, i would suggest that you create a new folder on the newer PC, then locate the old HD via "My Computer" & find & copy/paste the files over to the new folder. After that copy/paste, or cut/paste, whatever you want from there to your preferred locations.
If it's a HD problem, i can offer further advice.
If you can take out the hard drive & connect it to another computer, usually by internal connections, then you can easily transfer all your files to the newer PC.
If you can, i would suggest that you create a new folder on the newer PC, then locate the old HD via "My Computer" & find & copy/paste the files over to the new folder. After that copy/paste, or cut/paste, whatever you want from there to your preferred locations.
If it's a HD problem, i can offer further advice.
I need calculation software for smps resonant supply's can I use Octave for that?
thanks
Gateway computer inconsistant startup, etc.
Hithere all: Thanks to you (NeoDan, Zero D, and Sam Anytime) for your help. I repeated the upside down start up, last night and down loaded my excel BIB spreadsheet to a zip drive, however, another untimely shutdown prevented down loading the HR files. So the hadrdrive did function briefly. I'll continue to implement your much appreciated assistance comments, including looking after an ancient battery. thanks again, Michael
(The BIB excel spread sheet contains numerous BIB designs calculated from GM's formulas for drivers with low Vas and applicable Qts range, so I really wanted to recover this sheet.)
Hithere all: Thanks to you (NeoDan, Zero D, and Sam Anytime) for your help. I repeated the upside down start up, last night and down loaded my excel BIB spreadsheet to a zip drive, however, another untimely shutdown prevented down loading the HR files. So the hadrdrive did function briefly. I'll continue to implement your much appreciated assistance comments, including looking after an ancient battery. thanks again, Michael
(The BIB excel spread sheet contains numerous BIB designs calculated from GM's formulas for drivers with low Vas and applicable Qts range, so I really wanted to recover this sheet.)
I don't have Excel loaded, so can't view, but hope one of these is it: https://speakerprojects.wordpress.com/cabinet-types/bib-loudspeakers/bib-calculator/
GM
GM
Hornresp Update 4060-170521
Hi Everyone,
CHANGE 1
The Large Voice Coil option has been renamed the Lossy Le option, and can now be selected and used in the main input parameters window, as well as in the Loudspeaker Wizard.
To choose the lossy inductance option either click the checkbox in the Loudspeaker Wizard or double-click the Le label in the main input parameters window when in edit mode. The Le label is shown in red to indicated that the option has been selected. The chosen option can be permanently saved to the data record, and is retained when a driver is copied or pasted, or when permanently saved to the driver database.
The adjusted value of Bl calculated by the Lossy Le model can be seen in the status bar panel at the bottom of the main input window by moving the mouse pointer over the Bl label or input text box.
The Lossy Le option is not available with ME1 or ME2 records.
CHANGE 2
A very interesting and productive collaboration with diyAudio forum member 'bolserst' has resulted in a change to the way that power, phase and impulse responses are calculated. My sincere thanks to 'bolserst' for helping to make Hornresp a better product.
CHANGE 3
Standard wrapped phase rather than corrected phase is now shown by default. An offset delay correction can still be added using the existing Delay tool.
CHANGE 4
A passive radiator is now specified by pressing the Ctrl key and double-clicking the Fr, Tal, Ap, Lpt, Ap1 or Lp label. A passive radiator is un-specified by double-clicking the Sp1 to Sp9 or Cmp label. Alternatively, the Tools > Chamber Type menu command can still be used.
CHANGE 5
The Undo / Redo feature now recognises when the Multiple Entry Horn Loudspeaker Wizard is used. This functionality was inadvertently overlooked when the Wizard was first added.
As always, could you please report any bugs, no matter how minor they may seem.
Kind regards,
David
Hi Everyone,
CHANGE 1
The Large Voice Coil option has been renamed the Lossy Le option, and can now be selected and used in the main input parameters window, as well as in the Loudspeaker Wizard.
To choose the lossy inductance option either click the checkbox in the Loudspeaker Wizard or double-click the Le label in the main input parameters window when in edit mode. The Le label is shown in red to indicated that the option has been selected. The chosen option can be permanently saved to the data record, and is retained when a driver is copied or pasted, or when permanently saved to the driver database.
The adjusted value of Bl calculated by the Lossy Le model can be seen in the status bar panel at the bottom of the main input window by moving the mouse pointer over the Bl label or input text box.
The Lossy Le option is not available with ME1 or ME2 records.
CHANGE 2
A very interesting and productive collaboration with diyAudio forum member 'bolserst' has resulted in a change to the way that power, phase and impulse responses are calculated. My sincere thanks to 'bolserst' for helping to make Hornresp a better product.
CHANGE 3
Standard wrapped phase rather than corrected phase is now shown by default. An offset delay correction can still be added using the existing Delay tool.
CHANGE 4
A passive radiator is now specified by pressing the Ctrl key and double-clicking the Fr, Tal, Ap, Lpt, Ap1 or Lp label. A passive radiator is un-specified by double-clicking the Sp1 to Sp9 or Cmp label. Alternatively, the Tools > Chamber Type menu command can still be used.
CHANGE 5
The Undo / Redo feature now recognises when the Multiple Entry Horn Loudspeaker Wizard is used. This functionality was inadvertently overlooked when the Wizard was first added.
As always, could you please report any bugs, no matter how minor they may seem.
Kind regards,
David
Attachments
Wow you've been busy, that's a lot of significant changes.
The Lossy Le main menu tool is everything I ever hoped it could be and more. I really like how you implemented all the requests. Your implementation is much better than how I pictured it. I'm well into my busy season so I don't have time to download and try it right now but I will asap. The pics look great though.
If you want to say a few words about Change 2 and how it changes things I would be interested in hearing about it. I've found bolserst to really know what he's talking about and he's answered a few questions for me in the recent past.
Thanks for all this hard work, the new Lossy Le tool makes me very happy.
Last edited:
Hi 3ll3d00d,
Many thanks for the feedback!
You are not missing something, I am
.How a bug so obvious could have slipped through testing, I have no idea - unbelievable...
I will try to fix the problem in the next day or so.
Kind regards,
David