Driver distorts at high volumes....

eRiCdWoNg · 31st October 2003, 11:32 PM

...I dont mean when I overdrive the speakers- but my right Peerless driver has developed a distortion, almost like a voice coil rub. Its most noticeable on certain vocals (female particularly) when played loud as well as some synthesizer tracks. I do drive these speakers pretty hard. I played the driver outside of the baffle in free air to see if it had any effect. The distortion was still there in one of the drivers. Very annoying and very obvious. Is this voice coil rub?

li_gangyi · 31st October 2003, 11:35 PM

Might be in your amp...check with another...

eRiCdWoNg · 31st October 2003, 11:50 PM

Dont think its the amp. I put in new/different drivers and it doesnt do it.

Bill Fitzpatrick · 1st November 2003, 12:48 AM

Just swap the left and right Peerless drivers. If the problem moves it is a defective driver. If not, it is something else.

eRiCdWoNg · 2nd November 2003, 06:21 PM

Hmmm... now I wonder if I "1/2 blew" the speaker. Is that possible?

Bull · 2nd November 2003, 11:22 PM

Yep if the woofer makes a rubbing sound the voice coil former is squashed caused by over excersion 'bottoming out'.
And sometimes voice coil rub is an overheated voice coil where the former has expanded or the actually voice coil hascome unstuck.Where as a particly burnt voice coil would make a constant noise at any volume like a 'rasping scraping sound'.

If the speaker overheats it shows the amp is either pushing it too hard above it's rated power or the amp has been clipping.

Over excersion can happen when the amp is not clipping or over driving the speaker.For example a speaker which a small x mech[maximum linear excersion] driven hard a heavy bass signal,especially if eq and/or bass tone controls are boosted can lead to over excersion.Over excersion the voice coil former[the cylinder the wire is wound round],cone,surround,and spider can tear.
If you love a massive amount of a lot of bass then buy a woofer with a long throw or long excersion[same thing],but if it's a heat problem then you need a woofer with a kapton/black ironised aluminium former and a big voicecoil [2 inch and over].
Since paper or composition former is no good for high power use or strong bass.

31st October 2003, 11:32 PM	#1
eRiCdWoNg diyAudio Member Join Date: Jul 2003 Location: maryland, USA	Driver distorts at high volumes.... ...I dont mean when I overdrive the speakers- but my right Peerless driver has developed a distortion, almost like a voice coil rub. Its most noticeable on certain vocals (female particularly) when played loud as well as some synthesizer tracks. I do drive these speakers pretty hard. I played the driver outside of the baffle in free air to see if it had any effect. The distortion was still there in one of the drivers. Very annoying and very obvious. Is this voice coil rub?

31st October 2003, 11:35 PM	#2
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	Might be in your amp...check with another... __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

2nd November 2003, 11:22 PM	#6
Bull diyAudio Member Join Date: Oct 2002 Location: ...........	reply Yep if the woofer makes a rubbing sound the voice coil former is squashed caused by over excersion 'bottoming out'. And sometimes voice coil rub is an overheated voice coil where the former has expanded or the actually voice coil hascome unstuck.Where as a particly burnt voice coil would make a constant noise at any volume like a 'rasping scraping sound'. If the speaker overheats it shows the amp is either pushing it too hard above it's rated power or the amp has been clipping. Over excersion can happen when the amp is not clipping or over driving the speaker.For example a speaker which a small x mech[maximum linear excersion] driven hard a heavy bass signal,especially if eq and/or bass tone controls are boosted can lead to over excersion.Over excersion the voice coil former[the cylinder the wire is wound round],cone,surround,and spider can tear. If you love a massive amount of a lot of bass then buy a woofer with a long throw or long excersion[same thing],but if it's a heat problem then you need a woofer with a kapton/black ironised aluminium former and a big voicecoil [2 inch and over]. Since paper or composition former is no good for high power use or strong bass.

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31st October 2003, 11:50 PM	#3
eRiCdWoNg diyAudio Member Join Date: Jul 2003 Location: maryland, USA	Dont think its the amp. I put in new/different drivers and it doesnt do it.

1st November 2003, 12:48 AM	#4
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	Just swap the left and right Peerless drivers. If the problem moves it is a defective driver. If not, it is something else.

2nd November 2003, 06:21 PM	#5
eRiCdWoNg diyAudio Member Join Date: Jul 2003 Location: maryland, USA	Hmmm... now I wonder if I "1/2 blew" the speaker. Is that possible?

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