amp cuts out certain frequencies - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 7th May 2009, 01:17 AM   #1
diyAudio Member
 
Join Date: Jun 2008
Default amp cuts out certain frequencies

Hello i have the Sony str-dg520 amplifier and i just had a weird occurrance happen to me. this has happened before. after a while of playing audio at max volume all of a sudden the treble (not sure how to speel that) cut out almost completely. i am only using 3 speakers a left right and a center with most of the treble coming out of the center. i know if i turn my amp off and wait a while it comes back does anyone know whats causing this and any way to correct it.
  Reply With Quote
Old 7th May 2009, 01:31 AM   #2
diyAudio Member
 
Join Date: Jun 2008
NEW INFO:
ok now ive been playing music for a bit after this problem occurs. if it goes to a new song or gets paused for a second or two the treble cuts back in temporarily so i am not sure what to consider this. overheating cold solder or what.
  Reply With Quote
Old 7th May 2009, 04:28 AM   #3
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
If I had to guess, you have a thermal cutout on the tweeter in your speaker. After being ovdrdriven for a periood of time, it heats up and turns the tweeter off until it cools down.

SOme small component like a Raychem Polyswitch or an equivalent is what I might expect.
  Reply With Quote
Old 7th May 2009, 04:59 AM   #4
diyAudio Member
 
Join Date: Jun 2008
sound splausible but the thing is the speaker im using that has a tweeter in it is rated for 125 watts and im only able to put 100 watts through it . would this still happen?
  Reply With Quote
Old 7th May 2009, 08:18 AM   #5
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Quote:
im using that has a tweeter in it is rated for 125 watts
There are not many tweeters handling this kind of power, so where did you get that number from

If you are refering to that your speakers can handle 125 Watts, this doesn't apply to each of the speaker drivers.....

Because of a higher SPL (your tweeter is more sensitive than your mid and bass driver), your tweeter may only be able to handle 30-40 Watts if driven alone.

There is a good change that Enzo's suggestion is right
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  Reply With Quote
Old 7th May 2009, 10:25 AM   #6
diyAudio Member
 
Join Date: Jun 2008
i meant to say that the speaker containing the tweeter( the only one in my system) has a total power rating with all drivers totaling 125 watts.
  Reply With Quote
Old 7th May 2009, 03:07 PM   #7
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
If you are driving it hard, your amp is capable of sending out short bursts of energy far exceeding the rated 100 watts. It's known as clipping and can be deadly to tweeters. It sounds like you're lucky to have the tweeter protection or they would likely be dead by now. Show restraint around the volume control my friend.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 8th May 2009, 04:48 AM   #8
diyAudio Member
 
Join Date: Jun 2008
ok look i know my amplifier is not going into clipping so dont give me that bs.
  Reply With Quote
Old 8th May 2009, 06:55 AM   #9
diyAudio Member
 
Jan Dupont's Avatar
 
Join Date: Apr 2003
Location: Copenhagen, Denmark
Send a message via MSN to Jan Dupont
Quote:
so dont give me that bs
We are actually trying to help you here, so why this behavior ???
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com
  Reply With Quote
Old 8th May 2009, 02:55 PM   #10
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver


mulletdude,

YGM
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  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
One channel cuts out randomly dhowlan Analogue Source 0 25th September 2008 02:05 AM
speaker volume cuts way down when i touch amp TuroK27 Car Audio 3 17th August 2006 07:25 AM
Platter cuts out after a single revolution Dancing_Priest Analogue Source 9 23rd July 2006 01:29 AM
inner cuts of pcbs bigpanda Parts 2 8th July 2006 01:53 AM
Bass Amp cuts out, please help achtung jackass Solid State 6 23rd March 2005 04:52 AM


New To Site? Need Help?

All times are GMT. The time now is 06:53 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