changing t/s parameters

airman · 8th January 2006, 06:44 PM

I have 2 questions:

1. Suppose i have a loudspeaker. What should i do with it (buying a new one doesn't count

) if i want to increase Fs and also Qts? Is it possible?

2. If i have a loudspeaker with phase plug..what would happen with T/S parameters if i remove phase plug and cover the hole with ordinary dustcap?

thanks.

richie00boy · 8th January 2006, 07:09 PM

I doubt you can make Fs higher as that will require lightening the cone. Making it heavier (which lowers Fs) is pretty easy, stick stuff on it. This will also raise Qts.

Changing a phase plug to a dust cap shouldn't affect the T/S parameters. It will affect the sound though.

airman · 8th January 2006, 08:03 PM

If i change the spider with a harder one..that shoul increase Fs..but what would happen with other parameters?

pinkmouse · 8th January 2006, 08:12 PM

Why do you want to change the T/S parameters? There may be an easier way to achieve what you want.

airman · 8th January 2006, 08:27 PM

Maybe it is a stupid reason, but..loudspeaker with higher Fs and Qts just sounds better mounted in car door (sort of infinite baffle or very big seald box). Till now i had them in boxes with 8L, but from now on that isn't possible anymore..

thalis · 8th January 2006, 10:03 PM

Cms would of course fall, Vas would fall, Qts would rise. But it’s a difficult surgery to change the spider, you should consider that manufacturers use some special glue, among other things, and that alignment in the gap with your hands isn’t an easy task.

Regards,
Thalis

airman · 9th January 2006, 10:42 AM

I know someone who repairs loudspeakers, so that shouldn't be a problem.

pinkmouse · 9th January 2006, 11:43 AM

Wouldn't it just be easier to buy new drivers and use your others for something else?

airman · 9th January 2006, 12:47 PM

I just wouldn't like to pay much $$$ for new speakers. My old one with this little tweak could also sound much better (or worse

)

Tomac · 9th January 2006, 01:09 PM

what are the speakers you have and what would you like to get from them?

8th January 2006, 06:44 PM	#1
airman diyAudio Member Join Date: Feb 2005 Location: Nova Gorica	changing t/s parameters I have 2 questions: 1. Suppose i have a loudspeaker. What should i do with it (buying a new one doesn't count ) if i want to increase Fs and also Qts? Is it possible? 2. If i have a loudspeaker with phase plug..what would happen with T/S parameters if i remove phase plug and cover the hole with ordinary dustcap? thanks.

8th January 2006, 07:09 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	I doubt you can make Fs higher as that will require lightening the cone. Making it heavier (which lowers Fs) is pretty easy, stick stuff on it. This will also raise Qts. Changing a phase plug to a dust cap shouldn't affect the T/S parameters. It will affect the sound though. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

8th January 2006, 08:12 PM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Why do you want to change the T/S parameters? There may be an easier way to achieve what you want. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

9th January 2006, 11:43 AM	#8
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Wouldn't it just be easier to buy new drivers and use your others for something else? __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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


	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

8th January 2006, 08:03 PM	#3
airman diyAudio Member Join Date: Feb 2005 Location: Nova Gorica	If i change the spider with a harder one..that shoul increase Fs..but what would happen with other parameters?

8th January 2006, 08:27 PM	#5
airman diyAudio Member Join Date: Feb 2005 Location: Nova Gorica	Maybe it is a stupid reason, but..loudspeaker with higher Fs and Qts just sounds better mounted in car door (sort of infinite baffle or very big seald box). Till now i had them in boxes with 8L, but from now on that isn't possible anymore..

8th January 2006, 10:03 PM	#6
thalis diyAudio Member Join Date: Jan 2004 Location: Athens	Cms would of course fall, Vas would fall, Qts would rise. But it’s a difficult surgery to change the spider, you should consider that manufacturers use some special glue, among other things, and that alignment in the gap with your hands isn’t an easy task. Regards, Thalis

9th January 2006, 10:42 AM	#7
airman diyAudio Member Join Date: Feb 2005 Location: Nova Gorica	I know someone who repairs loudspeakers, so that shouldn't be a problem.

9th January 2006, 12:47 PM	#9
airman diyAudio Member Join Date: Feb 2005 Location: Nova Gorica	I just wouldn't like to pay much $$$ for new speakers. My old one with this little tweak could also sound much better (or worse )

9th January 2006, 01:09 PM	#10
Tomac diyAudio Member Join Date: Dec 2003 Location: Zagreb	what are the speakers you have and what would you like to get from them?

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
TS parameters when changing Flux Density	f4bok	Multi-Way	4	24th December 2008 11:33 AM
TS parameters when changing Flux Density	f4bok	Pass Labs	2	23rd December 2008 02:46 PM
Changing Lasers	Pironi	Parts	1	5th February 2008 07:17 PM
Changing ZEN to Ret. of ZEN	boq	Pass Labs	1	28th May 2004 10:30 AM
Changing BF's for MJE's	Bensen	Solid State	2	27th May 2003 05:39 AM

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