Dayton RS100S-8 4" Reference Shielded Full-Range Drivers? - diyAudio
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Old 7th May 2008, 12:25 AM   #1
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Default Dayton RS100S-8 4" Reference Shielded Full-Range Drivers?

Has anyone seen these Dayton RS100S-8 4" Reference Shielded Full-Range Drivers?

http://www.parts-express.com/webpage...n+rs100+driver


Any opinions on these?
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Old 7th May 2008, 12:29 AM   #2
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I never saw these before. Thanks for pointing them out! Could they be Tandbang varients? Kinda reminds me of my 4" Bamboos... but lower eff.

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Old 7th May 2008, 12:43 AM   #3
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They sure are low efficiency...

dave
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Old 7th May 2008, 12:48 AM   #4
holdent is offline holdent  Canada
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I wonder if the T/S params have a typo? The listed paramters seem much more different than I expected (for a rookie) for the 8 and 4 ohm versions. For example, the Qts for the 8 ohm version is 0.82 but for the 4 ohm one it is 0.48. Does this seem right?
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Old 7th May 2008, 12:58 AM   #5
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Default Zaph has some curves on pre-release driver

Zaph has some curves and images on his blog:

http://www.zaphaudio.com/blog.html

You need to scroll down to the Feb. 28 entry.

Enjoy!
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Old 7th May 2008, 01:09 AM   #6
holdent is offline holdent  Canada
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I just did a quick search on the Internet and came up with a couple of postings over at DIYMobileAudio: http://www.diymobileaudio.com/forum/...Dayton+RS100-8 and http://www.diymobileaudio.com/forum/...d.php?p=431648. Zaph tested a 8 ohm prototype and listed the results in his blog here: http://www.zaphaudio.com/blog.html (you have to scroll done to Feb 28 '08). In the DIYMoileAudio forum Zaph wrote about the 4 ohm prototype "It performs similarly but will have a slightly lower Qts, a couple dB higher SPL. Should be nice for the space challenged car installation". So I think that partly answers my question in my previous post about T/S param typo - it sounds like the typo is for the 4 ohm version.

Given the high Qts I wonder whether the best use for this driver is an open-back line array?

-----

Oops - just realized benchtester posted while I typed this...
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Old 7th May 2008, 12:04 PM   #7
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Looks like an OB driver. You can take advantage of the lower efficiency and mate it with a ~90dB to eliminate the BSC.

Very tough to go wrong at that price.
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Old 7th May 2008, 01:15 PM   #8
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Sounds like maybe a good choice for the inexpensive (relatively) narrow-baffle OB FR + Sub that I've been dreaming of...
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Old 7th May 2008, 02:26 PM   #9
Bluto is offline Bluto  United States
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Jim -

Nice find. A guy has to keep his eyes open. Initially I saw it as Dave did til Holden mentioned OB line array.

Can't recall whose but recently a guy did an array with CSS FR125's that caught my eye .

These could be a poor mans alternative.

Bluto
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Old 7th May 2008, 04:54 PM   #10
Kensai is offline Kensai  United States
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They're alot smaller than they look. The flange is less than 4" and the cutout is less than 3". Can they possibly have the Fs Parts Express lists?

Kensai
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