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12th Annual Vancouver Island diyFEST 2015
12th Annual Vancouver Island diyFEST 2015
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Old 14th March 2016, 10:37 PM   #271
Dave R is offline Dave R  United States
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Greetings Cal,
Is the moving mass known for the 10"?
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Old 15th March 2016, 04:24 AM   #272
Cal Weldon is offline Cal Weldon  Canada
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12th Annual Vancouver Island diyFEST 2015
Hey 200,
The 10" are just some salvaged, still working, woofers. The throw is limited, the spider is small.
I am thinking that if this is the best I can do after farting around for a week, then a new path is in order. I will keep you all informed.
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Old 15th March 2016, 01:44 PM   #273
Dave R is offline Dave R  United States
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Hi Cal,

Here's a link on PR's.
The Subwoofer DIY Page - Passive Radiator Systems

You may need to add some mass to the 10". Looking at the spec's on the WR125's, the Qts may be a little high (.64) for use in a vented or PR, but they could be tuned down to around 55 hz at best. But maybe more realistically, closer to 60 hz. The total mass of the passive would probably need to be around 60-90 grams (this includes the Mms of the 10").

Some passives come with a stack of weights that can be adjusted. I've seen other diy'ers apply caulking to the cone, starting around the dust cap. You may or may not want to sacrifice the 10" for the sake of experimentation.
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Old 15th March 2016, 04:43 PM   #274
Cal Weldon is offline Cal Weldon  Canada
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12th Annual Vancouver Island diyFEST 2015
Dave, I really appreciate your input and if this just needed some tweeking, I'd be right on it. At this point we're not very close.
You'll note the different stages of the unit with a noticeable improvement each time. By the time you get to this stage and you're not getting close to what you need, you start looking in another direction. I don't think there's anything that can be done at this point.
As always it's nice to bring this to the table for you guys to chew on but this time, I have to hang my head in shame. It's just not going to be the Belle of the ball this year.
Cheers.
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Old 15th March 2016, 05:32 PM   #275
Dave R is offline Dave R  United States
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no shame in exploring one route and then backing up to take another.
We're here (or is that hear?) for you man.
;^)
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Old 24th March 2016, 03:12 AM   #276
tomchr is offline tomchr  Canada
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Is there a date for the 13th (oh-oh) Annual Fest of 2016 yet?

It's caught my eye that the Transcanada Highway practically connects my house with Dave's. That could be a nice road trip. Just saying...

Tom
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Old 24th March 2016, 04:19 AM   #277
planet10 is offline planet10  Canada
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12th Annual Vancouver Island diyFEST 2015
Date not set yet, likely 20 Aug.

13 is a lucky number.

Calgary to Victoria & back is a nice drive. I've done it starting from either end quite a few times. Best time was 8.5 hr from the ferry over Manning Pass.

We are 3.3 km off the #1.

Come on out. Come early, stay late.

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Old 24th March 2016, 04:36 AM   #278
tomchr is offline tomchr  Canada
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Quote:
Originally Posted by planet10 View Post
Date not set yet, likely 20 Aug.
I guessed Aug 17 ħa weekend. Cool. I'll keep watching for the 2016 thread.

Quote:
Originally Posted by planet10 View Post
Calgary to Victoria & back is a nice drive. I've done it starting from either end quite a few times.
I did it just after new years this year. It was indeed an awesome drive. I hit Hwy 1 just north of Sumas, so I got to skip the Vancouver traffic. There was a light dusting of snow on the mountains and trees. It was epic.

Quote:
Originally Posted by planet10 View Post
We are 3.3 km off the #1.
So in total, I'll have to drive an entire 4 km off #1.

Quote:
Originally Posted by planet10 View Post
Come on out. Come early, stay late.
Thank you. Will do. It's only been four years since I last visited. I hope to bring some toys this time around.

Tom
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Old 24th March 2016, 06:34 AM   #279
TerryO is offline TerryO  United States
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Default Your Summer HiFi / Audio Fun!

Just for everyone's general information, we will be holding the "The Puget Sound! DIY Speaker Contest" down here near Seattle on August 27th. If you enjoy DIY stuff the BC event and the Seattle event are a week apart (as usual).

I'll be posting more information in the next couple of days on a separate thread so as to not cause any confusion (hopefully!).

Best Regards,
TerryO
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Old 24th March 2016, 06:35 AM   #280
planet10 is offline planet10  Canada
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Quote:
near Seattle on August 27th
That pretty much settles our date.

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