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Old 16th June 2010, 06:41 PM   #81
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Quote:
Originally Posted by bolserst View Post
I should have time to post an updated spreadsheet in a few days which includes the symmetric layout.
Here is Version 2 of the spreadsheet.
Changes are:

1) Added formulas for SPL calcualtions to Notes TAB.
2) Added Reference for line termination to bottom of Directions TAB.
3) Added 3 TABs showing schematics for asymmetric and 2 possible symmetric configurations.

Each of the configuration TABs show R & C values for single ended and symmetric drive of the ESL sections.
Most people use the symmetric drive layout when actually constructing ESLs.
However, for SPICE simulation, the single ended version is more convenient.

When simulating with SPICE, SPL is proportional to:
20*LOG[(total current) / sqrt(frequency)]


Oh, almost forgot to mention... I had protected each TAB just so you didn't accidently mess up one of the formulas. There isn't a password though, so you can unprotect each TAB by simply selecting [Unprotect Sheet] from the [Tools] menu. Then you can change or rearrange things as you see fit.
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Old 24th June 2010, 08:12 PM   #82
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Default Making ESL's better for people not in the hot seat.

Quote:
Originally Posted by owenhamburg View Post
Having now owned Quad ESL 57's and Quad ESL 63's I have to say quads combination of filter and delay line in the ESL 63 is very impressive, for improving the treble dispersion. Unless you play with a pair of ESL 63's for a while you would not realize how good they are at treble dispersion because the bass is still very directive.
Having had the Quad ESL 63's for longer now, and experimented with active cross overs its worth giving you all an update.

I have now wired up a cheap bought active cross over at about 100Hz, and now the Quad ESL 63's with the sub woofer are more tolerable off axis. With a cross over of 400Hz the off axis sound is quiet good, improving on conventional speakers with smoothness of an ESL midrange tweeter and suitable for a dinner party, though not ESL perfect. The cross over at 100Hz in my opinion enhances the sound when sitting at the hot seat for best sound, the cross over at 400Hz sounds better when in a Dinner Party situation and is nicer enough that I am not tempted to use conventional speakers.

Before these discoveries I was considering having the ESL63's on Sculpture rotation plates:
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Old 3rd March 2016, 03:16 AM   #83
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Here is Version 3 of the spreadsheet.
The following functionality was added based on feedback from users:

1) Added ability to choose units for the dimensions
2) Added inputs for transformer step-up ratio, input voltage, and bias voltage
- among other things this will allow you to easily determine sensitivity @ 2.83Vrms.
3) Added selection for line source type(ideal, finite, finite on floor)
4) Added ability to model diaphragm resonance effect on response
5) Added calculations for parameters to model response with calculator esl_seg_ui
- see attachment below for description of how to copy and paste segment parameters

As with previous version, each TAB is protected so you don't accidently mess up one of the formulas. There isn't a password though, so you can easily unprotect each TAB and change or rearrange things as you see fit.

Oh, I almost forgot, this version uses a short macro code to populate the esl_seg_ui parameters. So when you open the spreadsheet, be sure to enable Macro content when prompted.
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File Type: png Copy_to_esl_seg_ui.png (112.4 KB, 115 views)
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File Type: zip ESL_line_sectioned_DIY_v3.zip (284.4 KB, 33 views)

Last edited by bolserst; 3rd March 2016 at 03:20 AM.
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Old 3rd March 2016, 11:27 AM   #84
WrineX is offline WrineX  Netherlands
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Quote:
Originally Posted by owenhamburg View Post
Having had the Quad ESL 63's for longer now, and experimented with active cross overs its worth giving you all an update.

I have now wired up a cheap bought active cross over at about 100Hz, and now the Quad ESL 63's with the sub woofer are more tolerable off axis. With a cross over of 400Hz the off axis sound is quiet good, improving on conventional speakers with smoothness of an ESL midrange tweeter and suitable for a dinner party, though not ESL perfect. The cross over at 100Hz in my opinion enhances the sound when sitting at the hot seat for best sound, the cross over at 400Hz sounds better when in a Dinner Party situation and is nicer enough that I am not tempted to use conventional speakers.

Before these discoveries I was considering having the ESL63's on Sculpture rotation plates:
? should the of axis be pretty ok for this low frequencies ?? even for a quad. talking meters of wavelength here when talking about 100hz. the panels are only 60cm. only gain in my opinion is getting higher spl. And maybe increase dynamics. and maybe just maybe your sub is not open bafle and act as a omni directional at these low frequency's. but the quad itself wont change in response. it stay figure of 8 at these low frequency's.
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Old 3rd March 2016, 11:29 AM   #85
WrineX is offline WrineX  Netherlands
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Quote:
Originally Posted by bolserst View Post
Here is Version 3 of the spreadsheet.
The following functionality was added based on feedback from users:

1) Added ability to choose units for the dimensions
2) Added inputs for transformer step-up ratio, input voltage, and bias voltage
- among other things this will allow you to easily determine sensitivity @ 2.83Vrms.
3) Added selection for line source type(ideal, finite, finite on floor)
4) Added ability to model diaphragm resonance effect on response
5) Added calculations for parameters to model response with calculator esl_seg_ui
- see attachment below for description of how to copy and paste segment parameters

As with previous version, each TAB is protected so you don't accidently mess up one of the formulas. There isn't a password though, so you can easily unprotect each TAB and change or rearrange things as you see fit.

Oh, I almost forgot, this version uses a short macro code to populate the esl_seg_ui parameters. So when you open the spreadsheet, be sure to enable Macro content when prompted.
Niceeeeeee. an update! i dont get thbe 5 5 5 5 5 you wont get an error anymore when leaving the resistor values blank ?

EDIT aha i see its a excel sheet. thought it was the esl gui but great work anyhow! i always have problems having excel sheets to work proper somehow. remember the stacked sheet you gave me ? i could open it but it never calculated new values or plotted might be my excel is to old ? oh i got excel 2003 ...... that might be a problem i guess haha

Last edited by WrineX; 3rd March 2016 at 11:33 AM.
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Old 5th March 2016, 08:15 PM   #86
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I have Excel 2000 installed on one of my old test computers. I checked and both spreadsheets work fine, so should work with your Excel 2003. Remember the stacked sheet (ie multi-diaphragm) calculator requires the use of higher math functions so you need to have the Analysis Toolpak Add-In installed and active. If you are unsure about it, a quick web search for "excel 2003 analysis toolpak" will find you plenty of details on how to install and select/activate. The spreadsheet posted here does not require the Analsysis Toolpack. When you open it you should get a prompt to enable the macro. Once you click "Enable Macros", you should see the parameter input section and plot.


For those interested, the multi-diaphragm calculator mentioned was posted here for new and older version of Excel:
sandwich esl ?Yummie
sandwich esl ?Yummie
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File Type: png open-screen.png (76.3 KB, 79 views)
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