Dayton RS100S-8 4" Reference Shielded Full-Range Drivers?

JimOfOakCreek · 7th May 2008, 12:25 AM

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?

Godzilla · 7th May 2008, 12:29 AM

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.

Godzilla

planet10 · 7th May 2008, 12:43 AM

They sure are low efficiency...

dave

holdent · 7th May 2008, 12:48 AM

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?

benchtester · 7th May 2008, 12:58 AM

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!

holdent · 7th May 2008, 01:09 AM

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...

gmilitano · 7th May 2008, 12:04 PM

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.

AdamThorne · 7th May 2008, 01:15 PM

Sounds like maybe a good choice for the inexpensive (relatively) narrow-baffle OB FR + Sub that I've been dreaming of...

Bluto · 7th May 2008, 02:26 PM

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

Kensai · 7th May 2008, 04:54 PM

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

7th May 2008, 12:25 AM	#1
JimOfOakCreek diyAudio Member Join Date: Apr 2007 Location: Oak Creek, WI	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? __________________ HiFi - Jazz - Wine

7th May 2008, 12:43 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	They sure are low efficiency... dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

7th May 2008, 12:58 AM	#5
benchtester diyAudio Member Join Date: Apr 2007 Location: Oakland, Calif.	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!

7th May 2008, 12:04 PM	#7
gmilitano diyAudio Member Join Date: Apr 2004 Location: Winnipeg, Manitoba	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. __________________ DIY Audio Projects [ 10" DIY Subwoofer \| FE127E Sealed Bipole \| [ LM3886 Chip Amp / Gainclone \| K-12M Tube Amp Kit ]

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7th May 2008, 12:29 AM	#2
Godzilla diyAudio Member Join Date: Nov 2005 Location: New York	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. Godzilla

7th May 2008, 12:48 AM	#4
holdent diyAudio Member Join Date: Nov 2005 Location: Ontario	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?

7th May 2008, 01:09 AM	#6
holdent diyAudio Member Join Date: Nov 2005 Location: Ontario	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...

7th May 2008, 01:15 PM	#8
AdamThorne diyAudio Member Join Date: Oct 2006 Location: Los Angeles, CA	Sounds like maybe a good choice for the inexpensive (relatively) narrow-baffle OB FR + Sub that I've been dreaming of...

7th May 2008, 02:26 PM	#9
Bluto diyAudio Member Join Date: Sep 2007 Location: WI.- near the Dells	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

7th May 2008, 04:54 PM	#10
Kensai diyAudio Member Join Date: Jan 2004 Location: St. Louis	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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