PA Speakers spark? Advise Please! - diyAudio
Go Back   Home > Forums > Live Sound > PA Systems

PA Systems A forum for discussion of all parts of a sound reinforcement or DJ system: loudspeakers, mixers (desks) etc.

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
Reply
 
Thread Tools Search this Thread
Old 3rd September 2007, 05:30 AM   #1
htgeek is offline htgeek  United States
diyAudio Member
 
Join Date: Aug 2004
Location: House
Default PA Speakers spark? Advise Please!

Hey everyone. I've got a single Peavey PR15 that I was using to run vocals for a local rock band. The mic fed-back really loudly at one point during a practice and I happened to have my eyes on the speaker at the time. As the volume of the feedback whine got louder, a bright white light grew brighter from inside the speaker cab. I could see the light from one of the sound hole in the front of the cab, as it was coming from the inside. The entire feedback lasted about 1 second, but this light was no flash - it almost looked as if there was some sort of lightbulb growing brighter inside the cab. The speaker seemed to work fine after that and I have not taken it apart yet to look at the inside. It is a 400W speaker being run with a 500W power amp that was cranked up about halfway.
Was this a spark? Was it frying electronics? Has anyone heard of this happening before? Should I be worried for my speaker now? Any help is great!
  Reply With Quote
Old 3rd September 2007, 08:32 AM   #2
Foxx510 is offline Foxx510  Australia
diyAudio Member
 
Join Date: Nov 2006
It was most likely a light globe, the crossovers in the speakers are set up to dump excess power into the globe to protect the driver when you overdo it. It should be fine.
  Reply With Quote
Old 4th September 2007, 01:32 AM   #3
htgeek is offline htgeek  United States
diyAudio Member
 
Join Date: Aug 2004
Location: House
ohhhhhhh, that makes sense.
it did look just like a bulb lighting up in there, but i pictured an arc or something.
thanks!
  Reply With Quote
Old 4th September 2007, 02:12 AM   #4
diyAudio Member
 
rcavictim's Avatar
 
Join Date: Jun 2004
Location: Next to an open wormhole NW of Toronto
Did it cast a shadow image of the Virgin Mary? If so forget practising music for a living, you can sell tickets to touch the speaker. Be prepared to be inundated with the lost, the hopeless and the pathetic. From a marketing standpoint they are in unlimited supply thanks to the good work of the church, and god just keeps making more.

On the other hand, if it cast a shadow of the logo for Virgin Records, you are outa luck. Back to work for you!
__________________
"There are more worlds than the one you can hold in your hand." Albert Hosteen, Navajo spiritual elder and code-breaker, X-Files TV Series.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need advise speakers black_gulaman Multi-Way 1 19th May 2009 03:17 AM
advise need: JBL LX-1000 speakers Karrry Multi-Way 1 6th April 2009 07:11 AM
How do you advise I cross these speakers to a sub? 454Casull Multi-Way 1 16th November 2008 06:54 PM
on/off spark rgrayton Chip Amps 4 27th March 2007 02:06 AM
Speakers measurement..need your advise ! kanaddict Multi-Way 22 13th June 2003 04:35 PM


New To Site? Need Help?

All times are GMT. The time now is 01:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2