The FF85K Sprite - Page 3

planet10 · 5th August 2009, 01:10 AM

Quote:

Originally posted by VDV
Can i use padding polyester?
I need to kill standing waves?

Yes... it doesn't work quite as well
Yes.

dave

_henry_ · 5th August 2009, 01:35 AM

dave what is medium density cotton? wool felt is the brown carpet-like damping material isnt it?

will glass wool do the job?

thanks

planet10 · 5th August 2009, 04:46 AM

Quote:

Originally posted by _henry_
what is medium density cotton?

Hard to descibe, easy to show. Our primamry source has been vintage Canadian speakers. closest new stuff is a recycled denim house insulation -- unfortunately minimu 3" thickness (we haven't figured out how to slice it). 10-12mm thick would be very useful.

Quote:

wool felt is the brown carpet-like damping material isnt it?

Carpet underlay is typically higher density than you'd like but it has been pressed into service.

Quote:

will glass wool do the job?

Needs to be thicker ,,, which in the uFonekn is tough because there is so little room.

dave

_henry_ · 5th August 2009, 04:56 AM

Dave,

How much thicker for the glasswool should be sufficient?

cheers
henry

planet10 · 5th August 2009, 06:11 AM

Quote:

Originally posted by _henry_
How much thicker for the glasswool should be sufficient?

1.5-2x

dave

chuyler1 · 5th August 2009, 09:48 PM

The FF85K's are back in stock at Madisound. I ordered a pair yesterday. If they come in soon enough I may try to build a pair of uFonkens this weekend. If they come in late, well, i'll be drinking alot of Sprite instead of beer.

I have a really old 2.1 system connected to our bedroom TV. I'm thinking of keeping the sub and powering the uFonkens instead of the cube speakers. The sub plays into the 150Hz range I think so it will be a halfway decent match. The cube speakers don't sound too bad but there is a definite gap between them and the sub which I hope the uFonkens will close in on.

planet10 · 5th August 2009, 10:40 PM

150 Hz is where we have been XOing a mono sub...

dave

chuyler1 · 5th August 2009, 11:50 PM

Sweet!

VDV · 6th August 2009, 05:06 PM

chuyler1
More natural sound should be when uFonkens are used without any crossover, and this sub running until ~90hz, this sub has got small speaker, so it should be fast until ~90hz, a god match for very fast bass from uFonkens.
But uFonkens a little bit overloading on bass if you listed to them loudly.

human.bin · 7th August 2009, 02:06 AM

isn't it a creative soundblaster 2.1? i used to have it with my pc... i think the sub is really working more like a just a woofer, not going really low, nor doing it good enough for the fostex drivers, and anyway i think you should not use the amplification built-in for the satellites... that won't make thw fostex sing, and if i don't go wrong it's kind of equalized appositely for their satellites... but anyway everything can be changed one at a time, maybe the sub driver, can be used in a mdf ported box...

5th August 2009, 10:40 PM	#27
planet10 diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	150 Hz is where we have been XOing a mono sub... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fe107e or FF85k?	type	Full Range	9	18th January 2009 06:58 PM
Mods for FF85k	badman	Full Range	26	28th May 2008 07:25 PM
Ff85k?	Kensai	Full Range	1	25th April 2007 12:22 PM
Looking for Foster FF85K	NickC	Swap Meet	0	16th April 2007 05:28 PM
amp for Fostex FF85k	tame	Multi-Way	0	28th February 2005 08:21 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

5th August 2009, 01:35 AM	#22
_henry_ diyAudio Member Join Date: Jun 2002 Location: Indonesia	dave what is medium density cotton? wool felt is the brown carpet-like damping material isnt it? will glass wool do the job? thanks

5th August 2009, 04:56 AM	#24
_henry_ diyAudio Member Join Date: Jun 2002 Location: Indonesia	Dave, How much thicker for the glasswool should be sufficient? cheers henry

5th August 2009, 09:48 PM	#26
chuyler1 diyAudio Member Join Date: Feb 2006 Location: Massachusetts	The FF85K's are back in stock at Madisound. I ordered a pair yesterday. If they come in soon enough I may try to build a pair of uFonkens this weekend. If they come in late, well, i'll be drinking alot of Sprite instead of beer. I have a really old 2.1 system connected to our bedroom TV. I'm thinking of keeping the sub and powering the uFonkens instead of the cube speakers. The sub plays into the 150Hz range I think so it will be a halfway decent match. The cube speakers don't sound too bad but there is a definite gap between them and the sub which I hope the uFonkens will close in on.

5th August 2009, 11:50 PM	#28
chuyler1 diyAudio Member Join Date: Feb 2006 Location: Massachusetts	Sweet!

6th August 2009, 05:06 PM	#29
VDV diyAudio Member Join Date: May 2007	chuyler1 More natural sound should be when uFonkens are used without any crossover, and this sub running until ~90hz, this sub has got small speaker, so it should be fast until ~90hz, a god match for very fast bass from uFonkens. But uFonkens a little bit overloading on bass if you listed to them loudly.

7th August 2009, 02:06 AM	#30
human.bin diyAudio Member Join Date: May 2008	isn't it a creative soundblaster 2.1? i used to have it with my pc... i think the sub is really working more like a just a woofer, not going really low, nor doing it good enough for the fostex drivers, and anyway i think you should not use the amplification built-in for the satellites... that won't make thw fostex sing, and if i don't go wrong it's kind of equalized appositely for their satellites... but anyway everything can be changed one at a time, maybe the sub driver, can be used in a mdf ported box...

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)