can a cd contain damaging signals

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ricmon

can a cd contain damaging signals
« on: 11 Mar 2008, 07:44 pm »
I have had the unfortunate experience of breaking my amp and speakers while playing the same track twice.  Now before you think I'm masochistic I haven't played this disk in a long time as I prefer vinyl.  But when this track is played loudly (just enough to fill the room and make it euphoric and engaging) right after the sax drum duet when the whole band joins in kaboom.  So the question is can track contain damaging signals and should this signal cause this kind of melt down.  By the way the disc is Maceo Parker Live.

Wayner

Re: can a cd contain damaging signals
« Reply #1 on: 11 Mar 2008, 08:04 pm »
ricmon,

You  may be experiencing "Dynamic Range" at it's glory. The problem with uncompressed music is that the quiet passages are really quiet and the loud passages are really loud. If you set you volume to a relatively high point on the quiet passages, the loud ones will be like Hoover Dam "a-bustin".

Wayner  :D
« Last Edit: 11 Mar 2008, 08:44 pm by Wayner »

konut

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Re: can a cd contain damaging signals
« Reply #2 on: 11 Mar 2008, 08:21 pm »
Absolutely! I have a Telarc disc, recorded in 1979 digitally, of the 1812 Ovature containing cannon shots that have signals as low as 6hz. The jacket warns you to keep playback levels low until a safe level can be established. Is that live Parker disc "Life On Planet Groove" ?

ricmon

Re: can a cd contain damaging signals
« Reply #3 on: 11 Mar 2008, 08:36 pm »
Absolutely! I have a Telarc disc, recorded in 1979 digitally, of the 1812 Ovature containing cannon shots that have signals as low as 6hz. The jacket warns you to keep playback levels low until a safe level can be established. Is that live Parker disc "Life On Planet Groove" ?

Thats the one and it's the first track.  That track literally made sparks fly of the tweeter.

ricmon

Re: can a cd contain damaging signals
« Reply #4 on: 11 Mar 2008, 08:37 pm »
Whay i mean is that when just before the amp let got I saw a blure spark come off the tweeter.
 

konut

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Re: can a cd contain damaging signals
« Reply #5 on: 11 Mar 2008, 08:50 pm »
Absolutely! I have a Telarc disc, recorded in 1979 digitally, of the 1812 Ovature containing cannon shots that have signals as low as 6hz. The jacket warns you to keep playback levels low until a safe level can be established. Is that live Parker disc "Life On Planet Groove" ?

Thats the one and it's the first track.  That track literally made sparks fly of the tweeter.
   

I picked that up a few months ago but have not cranked it yet. I'll check it out. Luckily I don't have a tweeter. A pair of Omega Aperiodic 8s (single driver design)  :green:

markC

Re: can a cd contain damaging signals
« Reply #6 on: 11 Mar 2008, 09:01 pm »
Sounds like your amp clipped and when that happens the poor defenseless tweeter is generally the first casualty down the line.

ricmon

Re: can a cd contain damaging signals
« Reply #7 on: 11 Mar 2008, 09:34 pm »
I wish it ws only the tweeter.  The amp went too.

Freo-1

Re: can a cd contain damaging signals
« Reply #8 on: 11 Mar 2008, 09:41 pm »
Sounds like your amp clipped and when that happens the poor defenseless tweeter is generally the first casualty down the line.

Yep. Speakers do not like reproducing square waves.

You may need to assess the amp/speaker combination.  At first blush, you may either need more power, or a more efficient speaker. Some speakers are hell on amplifiers at certain frequencies, as impedance can drop dangerously low, thus potentially overtaxing the amplifier.   

nathanm

Re: can a cd contain damaging signals
« Reply #9 on: 11 Mar 2008, 10:05 pm »
Wait, does this mean you're too old?

Kim S.

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Re: can a cd contain damaging signals
« Reply #10 on: 12 Mar 2008, 10:25 am »
Years ago I was at a friends house who was using large guitar amps and speakers to play his CD's.  At first I thought this was brilliant.  It made rock music, especially punk, very lifelike.  Then we put on the Telarc 1812 overture disc already mentioned.  I still remember the horrible crackling sound when the cannons fired.  My friend broke the record for the 5 yard dash and shut things down before any permanent damage.  He now uses a Bose wave machine as his stereo.  Maybe I should encourage him to play the Telarc CD again!

Bob in St. Louis

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Re: can a cd contain damaging signals
« Reply #11 on: 12 Mar 2008, 02:46 pm »
I just got a visual of the movie "Back to the Future" and that huge, monster woofer........ :bomb:

Bob