Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




95 posts

Master Geek


Topic # 22840 10-Jun-2008 09:51
Send private message

Hi... one of our clients has called us this morning saying she has had 2 different sound tech companies to her mall in the last week, and they have both said the same thing...

the voltage coming down the 'line in' cable from our PC (for powering low power speakers) has blown 2 of her amplifiers...

I find this really hard to believe!!! (we're only talking 3watts max!)
 We have been doing this for 9 years with over 500 PC's and ive never heard anything so ridculous... some of our machines have pre-amped speaker jacks, and some don't, but we've never had an issue!
Has anyone ever heard of this before?? Any ideas?

Create new topic
214 posts

Master Geek

Trusted

  Reply # 137248 11-Jun-2008 10:13
Send private message

Unlikely. More possible is that the wiring has come into contact with, or has had (by induction) a high voltage come into contact with it. Is it a long run of cable, running near power wiring?




------------------------------------------------------
David Elsbury
Freelance Lighting, Sound and AV Technician
"Technician like ninja... live in shadow, move in silence"


544 posts

Ultimate Geek


  Reply # 138052 14-Jun-2008 21:02
Send private message

If there was a massive current going through the line out, then there would have been huge amounts of distortion coming OUT of the speakers before it blew.
Thats what happens when you amplify an amplified source, even if you've got the volume down low.
But even then, I find it highly unlikely that its what would have caused it.
A) Line out's aren't amplified.
B) Headphone outs only have enough juice to run a pair of headphones/earphones. Not enough to blow an amp.

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

How Oppo shakes New Zealand’s phone market
Posted 22-Aug-2017 18:32


Recognition for top small business advisors
Posted 22-Aug-2017 17:23


OPPO R11 dual 20MP camera phone debuts in New Zealand
Posted 22-Aug-2017 15:45


Intel introduces new 8th Generation processors
Posted 21-Aug-2017 19:02


Trend Micro launches Home Network Security
Posted 21-Aug-2017 18:38


Avondale College students at top of Microsoft Office Specialist World Championship
Posted 21-Aug-2017 14:11


Garmin introduces inReach SE+ and inReach Explorer+
Posted 21-Aug-2017 14:05


Public Wi-Fi plus cloud file sharing
Posted 18-Aug-2017 11:20


D-Link NZ launches professional Wireless AC Wave 2 Access Point for businesses
Posted 17-Aug-2017 19:25


Garmin introduces the Rino 700 five-watt two-way handheld radio
Posted 17-Aug-2017 19:04


Garmin announces the Foretrex 601 and Foretrex 701 Ballistic Edition for outdoor and tactical use
Posted 17-Aug-2017 19:02


Brightstar announces new distribution partnership with Samsung Knox platform in Australia
Posted 17-Aug-2017 17:07


Free gig-enabled WiFi network extends across Dunedin
Posted 17-Aug-2017 17:04


Samsung expands with connect Gear S3 Frontier
Posted 17-Aug-2017 15:55


Fact-checking Southern Cross Next cable is fastest to USA
Posted 17-Aug-2017 13:57



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.