Micro Sub using ND105 4" driver
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Re: Micro Sub using ND105 4" driver
I get it. Thanks for the education Wolf. In my circle of friends I'm often the "goto" guy for mobile subwoofer questions, but up until now I've done everything by ear and experimentation. This site has given me the opportunity to learn things "by the numbers". I'll always keep the experience/knowledge that I have, but if I can add some "book smarts" to it I may avoid making some mistakes.Comment
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Re: Micro Sub using ND105 4" driver
XMAX = good noises
XLIM = bad noises
:D
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Re: Micro Sub using ND105 4" driver
Later,
Wolf"Wolf, you shall now be known as "King of the Zip ties." -Pete00t
"Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
"He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
"We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith
*InDIYana event website*
Photobucket pages:
https://app.photobucket.com/u/wolf_teeth_speaker
My blog/writeups/thoughts here at PE:
http://techtalk.parts-express.com/blog.php?u=4102Comment
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Re: Micro Sub using ND105 4" driver
I get it. Thanks for the education Wolf. In my circle of friends I'm often the "goto" guy for mobile subwoofer questions, but up until now I've done everything by ear and experimentation. This site has given me the opportunity to learn things "by the numbers". I'll always keep the experience/knowledge that I have, but if I can add some "book smarts" to it I may avoid making some mistakes.
You're welcome,
Wolf"Wolf, you shall now be known as "King of the Zip ties." -Pete00t
"Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
"He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
"We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith
*InDIYana event website*
Photobucket pages:
https://app.photobucket.com/u/wolf_teeth_speaker
My blog/writeups/thoughts here at PE:
http://techtalk.parts-express.com/blog.php?u=4102Comment
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Re: Micro Sub using ND105 4" driver
Your making a huge assumption here. I said 5" width, I said nothing about height or depth. I was talking 1 dimension, not all three.
You know, briefcase sub, for example.
Also had another idea. What about a mini version of lilmike's tapped horn design? I mean, the whole thing would have to be smaller, but this driver might work for that. I guess more analysis of the driver's parameters would have to be done. There's also 4th order bandpass, and push/pull type enclosures to think about.Comment
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Re: Micro Sub using ND105 4" driver
I have used at LEAST 3 pr of the 295-310's (4.5mm Xmax), 4 pr of the 160's (3.15mm?), and probably 5 pr or more of the 10" (4.5mm IIRC). I've never heard the 10's bang, but all the 6.5" and 8" make quite a racket when pushed too far. The 160's would throw +/-3.15mm, for a total throw of about 1/4", right? They just can't go much further w/out slamming (the back plate, I assume).
It's always seemed to me that an overhung coil would have less leeway than an underhung one, simply 'cause the coil is longer than the gap and (probably) would run out of room to move mechanically. IOW, when an overhung coil, with 5mm Xmax approaches 5mm, the opposite end of the coil would be sticking out past the gap by 10mm, wouldn't it?
ChrisComment
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Re: Micro Sub using ND105 4" driver
I use the ND105 for my 2.1 computer media speakers and it sounds great. It plays loud enough that it will shake the walls.
For the size and money (even at the current price) it's a great little woofer.
Little SubThanks ,
JBComment
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Re: Micro Sub using ND105 4" driver
I think it is important to consider that recent Klippel testing of drivers is probably redefining what we consider "linear" Xmax. Many of the drivers tested exhibited a lot of distortion well before mechanical Xmax was reached, much less before dipping into the Xlim region. Some people are sensitive to bass distortion, not sure if I am one of them though.Don't listen to me - I have not sold any $150,000 speakers.
https://www.jfcomponents.com/product...range-mid-bass
https://www.jfcomponents.com/product...range-mid-bass
https://www.jfcomponents.com/product...um-cone-wooferComment
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Re: Micro Sub using ND105 4" driver
Contemplating actually making this to go in my truck. I have an Alpine amp that I believe will deliver 200 Watts bridged mono @ 4 ohms, so I could run 2 of the 8 ohm in parallel... not sure what this would sound like though, or how deep I'd be able to go. Also considering the Tang Band underhung 8, that might be a better choice. I have a space about 12x20x6" under the rear seat I can use.. that's it.Comment
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Re: Micro Sub using ND105 4" driver
If you're cramped for space grab the TC sounds Epic 8", it'll fit, but you'll need more power.Comment
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Re: Micro Sub using ND105 4" driver
In both directions it would, yes. But I meant that Xlim is not equal to Xmax. Xlim is equal to Xmech.
I've run the Bitty Booms pretty hard, and at low frequencies, and they moved 10mm p-p without backplate-a-whacking, IME. That's why I questioned you saying Xlim equals Xmax for DC woofers.
Later,
Wolf"Wolf, you shall now be known as "King of the Zip ties." -Pete00t
"Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
"He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
"We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith
*InDIYana event website*
Photobucket pages:
https://app.photobucket.com/u/wolf_teeth_speaker
My blog/writeups/thoughts here at PE:
http://techtalk.parts-express.com/blog.php?u=4102Comment
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Re: Micro Sub using ND105 4" driver
Has anyone modeled these with a PR? Maybe the dayton 8" and a pair of the 105s?Comment
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