Shield a speaker box

revans · 20th February 2009, 06:08 PM

Hey there, I'm making a portable boombox at the moment and before I build the enclosure, I was wondering if I could do something about the buzz I get when my phone (which I use as the audio input so is always nearby) gets a txt message or connects to the mobile network.

Would I be able to shield the speakers by lining the interior walls of the enclosure with some sheet metal? Would this have any detrimental effect on sound? Thanks for any help or other suggestions.

star882 · 21st February 2009, 03:04 AM

Digital amplifiers are almost completely immune to EMI. If you don't have a digital output on your device, I've heard that hybrids do almost as well.

20th February 2009, 06:08 PM	#1
revans diyAudio Member Join Date: Aug 2008	Shield a speaker box Hey there, I'm making a portable boombox at the moment and before I build the enclosure, I was wondering if I could do something about the buzz I get when my phone (which I use as the audio input so is always nearby) gets a txt message or connects to the mobile network. Would I be able to shield the speakers by lining the interior walls of the enclosure with some sheet metal? Would this have any detrimental effect on sound? Thanks for any help or other suggestions.

21st February 2009, 03:04 AM	#2
star882 diyAudio Member Join Date: Mar 2007	Digital amplifiers are almost completely immune to EMI. If you don't have a digital output on your device, I've heard that hybrids do almost as well. __________________ "Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!

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
Toroid transformer, shield or not to shield?	bays_9a5tt	Digital Line Level	10	21st December 2008 02:10 PM
Shield speaker for PC	Gold_xyz	Multi-Way	2	10th March 2008 12:41 AM
How to shield a transformer?	Wynand	Everything Else	9	12th January 2007 10:05 PM
shield or not shield???	Leolabs	Chip Amps	13	27th July 2006 08:46 PM
AC shield question	AMR	Power Supplies	2	31st March 2005 02:37 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