Amplifier Problem !!! - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 14th November 2002, 01:50 PM   #1
Account Disabled
 
Join Date: Jul 2002
Exclamation Amplifier Problem !!!

i have a DJ Amplifier... 800W x2 i connect to the amp a 2 speakers of 900W ~ 4 Ohm and after 10 minutes...
the heatsink hot !!! but very very hot !! and in the amp have 4 fans... i scare that the amp will burn or dont work.... i need that the amp will work minimum 3 hours !!!....
what can i do??
and what the max temperature (celsius - C ) that amp can be on fire??

what can i do that amp will dont hot~burn ?!?
  Reply With Quote
Old 14th November 2002, 01:58 PM   #2
UrSv is offline UrSv  Sweden
diyAudio Member
 
UrSv's Avatar
 
Join Date: Jan 2002
Location: Sweden
What amplifier is it? Make and model? Could help. Normally I would expect a "DJ amplifier" to have temperature protection so that it will shut down when too hot.

/UrSv
  Reply With Quote
Old 14th November 2002, 02:29 PM   #3
trwh is offline trwh  United Kingdom
diyAudio Member
 
trwh's Avatar
 
Join Date: Apr 2002
Location: UK
Dj BASS AMP,

Most PA amps shut down at around 80 - 90 degrees C heatsink temperature. Bear in mind that this is an absolute maximum, a safe continuous operating temperature would be cooler than this. If your amp is overheating, it is likely there is a fault with the amp or the load connected to it.

Check your speaker load (and cables) with an ohmmeter. A 4 ohm speaker should have a DC resistance of around 3 ohms. Check that the fans in the amp are operating properly, and that the heatsink is free of dust.

If you cannot find a fault, then it may simply be that the manufacturer has given incorrect specifications for the amp - you could invest in a good quality (second hand?) PA amp.

Hope this helps,
Tim.
  Reply With Quote
Old 14th November 2002, 04:44 PM   #4
Account Disabled
 
Join Date: Jul 2002
if the amp will shut down it is dont good ! because the amp need to work 3 hours minimum...

my cable is 5 meter on 4MM ani one
  Reply With Quote
Old 14th November 2002, 05:11 PM   #5
UrSv is offline UrSv  Sweden
diyAudio Member
 
UrSv's Avatar
 
Join Date: Jan 2002
Location: Sweden
Quote:
Originally posted by UrSv
What amplifier is it? Make and model? Could help. Normally I would expect a "DJ amplifier" to have temperature protection so that it will shut down when too hot.

/UrSv
Need answers?

/UrSv
  Reply With Quote
Old 14th November 2002, 05:25 PM   #6
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
what kinda amp is it.? i would check for shorts in the wire and speakers. you might have a blown crossover i have seen that happen where the xover creats a shor but only the amp see's it and the amp gets hot. also i would look inside tha amps and see if there is any thing shorting out. i would try desconecting the speakers and leave the tunes going through the amp and see if it still gets hot if not then try a small pair of speakers just some thing for a test let it run for about 10 min see if they get hot if not then just try one of your dj speakers then the other. my old inkel amp got hot too but that was because it was pushin 9 hours with no fan and 2 x 18" 2ohm speakers but it had thermal break down HEHE so i fixed it and made the amp stay on all the time. : O )

Jason
  Reply With Quote
Old 14th November 2002, 06:27 PM   #7
Account Disabled
 
Join Date: Jul 2002
if my amp at around 45 - 65 degrees C heatsink temperature...
it is ok?...

i measure the degrees C heatsink temperature...
  Reply With Quote
Old 14th November 2002, 07:39 PM   #8
djdan is offline djdan  Romania
diyAudio Member
 
Join Date: Dec 2001
Location: Romania
DJ BASS AMP

1. What loudspeaker type ?
2. Do you read another people threat ?
  Reply With Quote
Old 14th November 2002, 08:49 PM   #9
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
Default Amp problem

Quote:
Originally posted by Dj BASS AMP
if my amp at around 45 - 65 degrees C heatsink temperature...
it is ok?...

i measure the degrees C heatsink temperature...
A good rule of thumb is if you can touch the metal for 5 sec or so before you HAVE to pull back, it's probably around 50 deg Celsius.

Jan Didden
  Reply With Quote
Old 14th November 2002, 08:59 PM   #10
PedroPO is offline PedroPO  Portugal
diyAudio Member
 
PedroPO's Avatar
 
Join Date: Jan 2002
Location: Lisbon,Portugal
Send a message via ICQ to PedroPO
That temperature is good for some amps, but be sure that that amp doesn't have plastic covers and other melting stuff.

(my transistor amps run all at 50șC )

I would try also with other speakers, just to be sure they are ok.
__________________
Pedro Oliveira
  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
problem with my amplifier marcojhp Solid State 3 24th January 2007 08:34 PM
sub amplifier problem testarossa2k Subwoofers 4 25th August 2006 06:36 PM
RF Amplifier Problem xitronics Solid State 9 15th April 2006 05:48 PM
Problem with guitar amplifier wiseco16 Solid State 5 21st September 2004 11:28 PM
Amplifier problem empire Parts 0 4th April 2003 09:43 AM


New To Site? Need Help?

All times are GMT. The time now is 08:00 AM.


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