New version of Martin King's MathCad Worksheets is coming soon! - Page 25 - diyAudio
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Old 31st March 2006, 10:50 PM   #241
Zoran is offline Zoran  Serbia
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Hi
First, thanks to MJK for answering...
This was about the old worksheets.
I do not want to insist, but
that design can be very easy acomplished
by combining two old worksheets
1. driver backloaded vith cavity and horn system
for the first part of driver-cavity conn.
2. transmition line system (TL sections)
instead of the driver, connect the inputs to the outputs of the first,
driver folowed with cavity...
or
another way
just add the closed end branch to the existing BLH old sheet,
because open end alredy is present by the horn...
if someone can help it would be nice,
I am willing to try it in praxis, but without only the idea, dimensions of the cabinet would be as guessing...
I already made interface to TL sections sheet,
only for the physical dimensions and easyer implementation
now can be inplement for tqwt design...
it can be from help in case 1.
?
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Old 1st April 2006, 08:58 AM   #242
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As a hopefully easy to implement upgrade, can I suggest an easy to alter stuffing length / position in the line? I know that it's possible to do this in the existing sheets, but the interface isn't the easiest. It'd also allow for simpler and quicker modelling of aperiodic boxes following the method you've outlined, as there seems to be increasing interest in them at present (me too, I hold my hands up! ;-)

Regards
Scott
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Old 1st April 2006, 01:12 PM   #243
soongsc is offline soongsc  Taiwan
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Do the new worksheets handle multiple drivers their interaction based on XO frequency?
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Old 1st April 2006, 01:28 PM   #244
MJK is offline MJK  United States
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Scott and Zoran,

All of the things you mention can be done given enough time. But time is the precious resource and the list of planned worksheets is long. So I have to assign priorities and I am trying to order things based on my perception of what will get used the most. There is not enough time to do everything and unfortunately the items that might appeal to one or two specific users end up at the bottom of the list.

On my list for today (while the wife is out this morning at swimming lessons with the girls) :

1. Clean up a couple of items, based on great comments I have recieved about the existing worksheets. Make the plot in the BLH worksheet symmetric so it looks like a horn. Allow the height of the listening position to be user defined.

2. Add a couple of comments to the website pages to include a few excellent suggestions from readers.

3. Set up license files for April, March is behind us.

4. Finish the two Open Baffle worksheets and try to get them uploaded.

5. Add a picture to my gallery, I am two weeks late on that promise. Sorry John Hageman.

6. Look into the next pair of worksheets to be worked on, the bipole and the stand mounted option for closed and ported.

7. Load MathCad 13 on my two computers.

8. Have lunch with the family, deal with the garage working on my car which is sick, hassle my son on his homework, ride my girls on their homework and piano practicing, stay out of wifes way so I don't get hassled on something I was supposed to finish (I forgot what it was because I only looked like I was listening).

9. Encourage wife to go shopping this afternoon for something that she definitely needs (she will be too cheap to buy it anyway) so I can do some more audio work.

10. Think about what I want to do tomorrow .....
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Old 1st April 2006, 01:30 PM   #245
MJK is offline MJK  United States
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Quote:
Do the new worksheets handle multiple drivers their interaction based on XO frequency?
The two open baffle worksheets will handle one full/extended range driver and one or two woofer drivers with a selectable crossover for each. The other worksheets are single driver versions like the older worksheets.
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Old 1st April 2006, 02:44 PM   #246
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From #8 above:
Quote:
I forgot what it was because I only looked like I was listening
I resemble that remark...
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Old 1st April 2006, 05:13 PM   #247
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I know the feeling Martin, and I'm sure no-one expects a flood of upgrades / new facilities every other minute. Just kicking ideas (some more, some less useful no doubt) around really. Hope the car is now recovering & the family did not require too much hassling / avoiding!

Cheers
Scott
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Old 1st April 2006, 08:12 PM   #248
Henkjan is offline Henkjan  Netherlands
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well, let's hope so many will pay Martin for his fine work that he can afford to make time available for all those items added to the wish list
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Old 1st April 2006, 11:55 PM   #249
soongsc is offline soongsc  Taiwan
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If we know what goodies are planned for the next year (we buy apartments like this here), maybe we feel reasonably comfortable for commercial use. But for the DIYers, $25 is already a steal, and is strongly recommeded. I would say the functions provided just for the Box design is more precise than the same functions in Sound Easy. I think Martin also answers questions in a more direct manner which is really good support.
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Old 2nd April 2006, 02:33 PM   #250
MJK is offline MJK  United States
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soongsc,

Quote:
If we know what goodies are planned for the next year (we buy apartments like this here), maybe we feel reasonably comfortable for commercial use.
I can't make any promises or predictions for the future. I think the right way to make a decision is to assess the value of what is available right now and determine if it makes sense to subscribe. View anything beyond that as a bonus. As soon as my daughter finishes her homework on my other PC, I will upload the tweaked worksheets and the two new open baffle worksheets, that is as far into the future as I can go.

Quote:
But for the DIYers, $25 is already a steal, and is strongly recommeded.
I think that the DIY and the commercial options are both a steal. My goal was to provide the worksheets at a price point where everybody would not hesitate to give them a try. The commercial license cost can be recovered in the first speaker sold. If this does not work, for whatever reason, it will be the end of www.quarter-wave.com.

Quote:
I would say the functions provided just for the Box design is more precise than the same functions in Sound Easy. I think Martin also answers questions in a more direct manner which is really good support.
Thanks! I appreciate the positive feedback.
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