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Miscellaneous designs -Mark Audio, Fostex, TB, Dayton, Seas etc.
Miscellaneous designs -Mark Audio, Fostex, TB, Dayton, Seas etc.
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Old 23rd May 2018, 11:23 AM   #1
Scottmoose is offline Scottmoose  United Kingdom
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Default Miscellaneous designs -Mark Audio, Fostex, TB, Dayton, Seas etc.

As per the title really.

I work up far more designs than I usually publish on the forum or ever normally see the light of day elsewhere. Some were done at request, some are simply quick design exercises or checks / investigations, some I can't actually remember the reason for doing. I don't always have time to systematically catalogue things, and they can end up lying around on one of my HDDs for months until I sort through them. I'm currently in the process of going through one of my old external USB HDDs before it's recycled & found quite a few. Most weren't worth bothering with, but there were some more practical / interesting ones so rather than scrapping them, I thought I'd start a thread that can essentially be a bit of a dumping ground for misc. designs that I've done that either haven't found a home elsewhere, or that have previously been posted but got buried on other threads, so at least they're concentrated together.

Advance warning:

-There is little consistency in the layout / sketches. I'm lousy at CAD, and there's no way I can inflict more than a small portion on the long-suffering Dave to draw. In these cases, it's probably not worth a high quality drawing anyway. I've quickly re-saved most into png format to save space & done a little tidying if needed. The rough date is sometimes mentioned, sometimes not, depending if I remembered to add it at the time. Sometimes damping is shown in the sketch (all done in Windows Paint so they are very basic), sometimes it isn't, but I always refer to it in any accompanying notes. Same for bracing or vents / ducts; I often don't show the dimensions but they're in the notes. There may be some errors; I don't think there is anything major though. Normally I work in Imperial & assume a baseline 3/4in build / sheet material thickness. Some are metric, in which case the assumption is 18mm. Change as desired, providing the internal dimensions are not altered.

-Most of these are physically quite simple; vented box variations, some MLTLs or ML-Voigts etc.

-I'll add periodically as / when I find things. All are free for personal use.
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Last edited by Scottmoose; 23rd May 2018 at 06:25 PM.
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Old 23rd May 2018, 11:25 AM   #2
Scottmoose is offline Scottmoose  United Kingdom
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Moderate sized (OK, large by some lights) vented box standmount for the 8in Seas FA22RCZ. It's a nice driver of its type, deserves a wider audience.

I've dug out a large ML Voigt (The Bennite Solution) I did for it that's buried in another thread too. I quite like this.
Attached Images
File Type: png FA22RCZ vented box standmount.PNG (27.3 KB, 564 views)
File Type: png The Bennite Solution Seas FA22RCZ.PNG (291.1 KB, 541 views)
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Last edited by Scottmoose; 23rd May 2018 at 11:42 AM.
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Old 23rd May 2018, 11:28 AM   #3
silasmellor is offline silasmellor  Denmark
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Miscellaneous designs -Mark Audio, Fostex, TB, Dayton, Seas etc.
Thank you sir! I recently had fun building your simple bass reflex 10p box and those are giving me lots of music pleasure, so i will follow this thread with interest.
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Old 23rd May 2018, 11:31 AM   #4
Scottmoose is offline Scottmoose  United Kingdom
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A bunch of boxes for the MA Pluvia 11. Some have been posted before, but not all; I'm deliberately concentrating them here as they're all over the shop at the moment.

Two here. Well, technically four.

-A set of 3 vented box options (The King of the Swingers -thank you Disney) I worked up when the driver was quite new; design exercise in different sizes & tunings, accounting for typical output impedance of many SET amps, in the 2.5ohm - 4ohm category.

Click the image to open in full size.

http://wodendesign.com/downloads/King-of-Swingers.pdf

-A tall ML Voigt (The Thin End of the Wedge -thank you, Yes, Minister / Yes, Prime Minister).

Click the image to open in full size.

http://wodendesign.com/downloads/TEotW-ML-V-P11.pdf
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Old 23rd May 2018, 11:35 AM   #5
Scottmoose is offline Scottmoose  United Kingdom
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More Pluvia 11 boxes. Might as well have them together.

-A tall MLTL. Closer to being a 'true' MLTL than some, as it doesn't use as much forcing. That isn't to say it's 'better' or 'worse' than shorter types. Just a bit different. YMMV.

Click the image to open in full size.

http://wodendesign.com/downloads/Tower-MLTL-P11.pdf

-A compact standmount 'monitor'. No, I'm not claiming it's a studio monitor, just using the term loosely. Live with it.

Click the image to open in full size.

http://wodendesign.com/downloads/Plu...actMonitor.pdf

These are not in any kind of date order BTW. Sorry.
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Old 23rd May 2018, 11:41 AM   #6
Scottmoose is offline Scottmoose  United Kingdom
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And more Pluvia 11 boxes. Will it ever end? Yes. But not yet.

-Twin driver standmount. A bit different. And why not? Run them wide open if you like, or low-pass the lower if you wish. Which I would, but that's just me. Depending on how you wire them (i.e. series or parallel) you can do a simple low-pass on the lower with either a series inductor (parallel wiring) or a shunt cap (series wiring).

Click the image to open in full size.

http://wodendesign.com/downloads/TwinP11-Standmount.pdf

-A quadrupole MLTL. A little (well, 5ft) nod to Burhoe's EPI flagship M1000 from the early 1970s. A driver on each vertical face, series-parallel wiring, no filtering. Yes, I am aware of what that means. It's meant to be like this, given the inspiration. The M1000 had & still has a following, so some people like it. Hi-Fi? Depends on your perspective. But interesting, if you have the space & don't necessarily want or value pinpoint imaging.

Click the image to open in full size.

http://wodendesign.com/downloads/Qua...e-P11-MLTL.pdf
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Old 23rd May 2018, 11:47 AM   #7
Scottmoose is offline Scottmoose  United Kingdom
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Continuing briefly on the (partial) indirect radiation theme, a bipole for the Tang Band W5-1611SAF. Minor twist: the cabinet is either a tall standmount or a short floorstander depending on your perspective & uses the double chamber reflex load. If you want to change the vent size, the pdf Dave put together with the appropriate formulas is also attached.
Attached Images
File Type: png W5-1611SAF bipole DCR.PNG (42.3 KB, 157 views)
Attached Files
File Type: pdf ChangingPortSize.pdf (135.6 KB, 10 views)
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Old 23rd May 2018, 11:50 AM   #8
Scottmoose is offline Scottmoose  United Kingdom
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A simple standmount for the Alpair 7P. I went with a deep box for this one.

Click the image to open in full size.

http://wodendesign.com/downloads/A7p-reflex.pdf

And there's a simple vented standmount for the CHN-70 as well.

Click the image to open in full size.

http://wodendesign.com/downloads/CHN70-SM-reflex.pdf
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Old 23rd May 2018, 12:18 PM   #9
Scottmoose is offline Scottmoose  United Kingdom
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A compact[ish] wide baffle MLTL for the Dayton Audio PS220-8. This one isn't targeting maximum extension but should have reasonable kick through the mid - upper LF.
Attached Images
File Type: png PS220-8 compact WB MLTL.PNG (32.9 KB, 110 views)
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Old 23rd May 2018, 12:22 PM   #10
Scottmoose is offline Scottmoose  United Kingdom
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A twin driver standmount for the Alpair 6M (metal cone 6.2). Pair wired in series here to keep impedance reasonable; either run both wide open or shunt one with a cap of choice to low-pass it.

Click the image to open in full size.

http://wodendesign.com/downloads/Twi...Standmount.pdf

More to come when I get back to clearing out the depressingly large stack of files...
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