removing compression driver screens?

rbrtmac · 6th February 2012, 08:53 PM

Hi everyone, I was wondering about removing the protective screen from my screw on compression drivers? They will be used in a controlled environment, and thought that it may tame some high freq. issues i have with my new PA mains. Any thoughts pro/con would be greatly appreciated! I was looking on rongon's post but it was sooo loong , I decided to start another post.

GM · 6th February 2012, 09:21 PM

I began removing screens from drivers in home apps in the late '60s with nary a bug/whatever problem, even the ones not mounted behind a grill, though I suppose a rambunctious kid or irate S.O. could shoot/toss some liquid in there. Frankly, if you're going to use screens, it should be a fine mesh one tightly stretched over the horn mouth to provide both a bit of protection and damping, though nowadays, making a horn plug out of a chunk of 30 ppi open cell foam based on Dr. Geddes research has become popular.

GM

weltersys · 6th February 2012, 09:28 PM

Quote:

Originally Posted by rbrtmac

Hi everyone, I was wondering about removing the protective screen from my screw on compression drivers? They will be used in a controlled environment, and thought that it may tame some high freq. issues i have with my new PA mains. Any thoughts pro/con would be greatly appreciated! I was looking on rongon's post but it was sooo loong , I decided to start another post.

I have not seen a "controlled environment" completely free of bugs.
Bugs seem to like to crawl in to small places, lay eggs, and die. The carcasses remain.
On a compression driver with no screen, bugs can get in between the phase plug and the diaphragm, their carcasses will buzz until hammered in to a fine dust.

I leave the screens on all my compression drivers.

Removing the screens has very little effect on frequency response, the drivers may show a dB or so increase at 16K removing the screens.

Radugazon · 6th February 2012, 10:09 PM

Coincidence, yesterday I spent the morning removing bugs (and big ones) out of my screenless CD, that's not an urban legend. The dust is indeed everywhere between the phase plug and the dome, and of course inside the gap. Bloody bastards.

GM · 6th February 2012, 10:32 PM

Gees, glad I don't live where ya'll do.

GM

pinkmouse · 6th February 2012, 11:12 PM

Having serviced several hundred compression drivers, the amount of rubbish that gets in even with the screens intact still never fails to amaze me.

rbrtmac · 6th February 2012, 11:58 PM

interesting reply's so far, you all will have me checking for bed bugs now! But seriously the tweeters are a little harsh in some regions, and i thought removing the screen may smooth them out a little, but any help in the very high frequency's would be a bonus.

CLS · 7th February 2012, 05:43 AM

Quote:

Originally Posted by Radugazon

....

The dust is indeed everywhere between the phase plug and the dome, and of course inside the gap. Bloody bastards.

Hi, I'm curious how those stuff affect the operation of the drivers?

Radugazon · 7th February 2012, 06:10 AM

Ferro fluid without oil ?

6th February 2012, 08:53 PM	#1
rbrtmac diyAudio Member Join Date: Feb 2012 Location: ephrata pa	removing compression driver screens? Hi everyone, I was wondering about removing the protective screen from my screw on compression drivers? They will be used in a controlled environment, and thought that it may tame some high freq. issues i have with my new PA mains. Any thoughts pro/con would be greatly appreciated! I was looking on rongon's post but it was sooo loong , I decided to start another post.

6th February 2012, 09:21 PM	#2
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	I began removing screens from drivers in home apps in the late '60s with nary a bug/whatever problem, even the ones not mounted behind a grill, though I suppose a rambunctious kid or irate S.O. could shoot/toss some liquid in there. Frankly, if you're going to use screens, it should be a fine mesh one tightly stretched over the horn mouth to provide both a bit of protection and damping, though nowadays, making a horn plug out of a chunk of 30 ppi open cell foam based on Dr. Geddes research has become popular. GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

6th February 2012, 10:32 PM	#5
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	Gees, glad I don't live where ya'll do. GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

6th February 2012, 11:12 PM	#6
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Having serviced several hundred compression drivers, the amount of rubbish that gets in even with the screens intact still never fails to amaze me. __________________ 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

6th February 2012, 10:09 PM	#4
Radugazon diyAudio Member Join Date: Aug 2010 Location: Sulawesi	Coincidence, yesterday I spent the morning removing bugs (and big ones) out of my screenless CD, that's not an urban legend. The dust is indeed everywhere between the phase plug and the dome, and of course inside the gap. Bloody bastards.

6th February 2012, 11:58 PM	#7
rbrtmac diyAudio Member Join Date: Feb 2012 Location: ephrata pa	interesting reply's so far, you all will have me checking for bed bugs now! But seriously the tweeters are a little harsh in some regions, and i thought removing the screen may smooth them out a little, but any help in the very high frequency's would be a bonus.

7th February 2012, 06:10 AM	#9
Radugazon diyAudio Member Join Date: Aug 2010 Location: Sulawesi	Ferro fluid without oil ?

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Coaxial Compression driver	hugobors	Multi-Way	5	27th September 2011 05:21 PM
Compression driver sensitivity	Sanon	Multi-Way	32	24th July 2011 01:14 PM
FS: Silver Iris Coaxial 15" driver pair (sans XO and compression driver)	theAnonymous1	Swap Meet	0	24th April 2007 12:09 AM
Removing dustcap from a Polypropylene driver	AJinFLA	Multi-Way	4	29th June 2005 12:02 AM
Removing Zobel network from mid driver xover	andy2	Multi-Way	0	5th March 2005 05:49 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