yo someone help me please.. i had a kicker cvr12 300w rms connected 2 a 600rms amp. it played great for a while but this morning i was playin a kinda distorted song at max volume and the speaker overheated! so im guessin the cone wasnt moving as it should with this particular song and it wasnt cooling properly! rite? anyway the glue holding the wire in the coil together melted and when it cooled the speaker LITERALLY frose! i mean no movement whatsoever it's stuck! wat can i do to fix this speaker??? HELP!!!
Replies (4)
swez on 11/11/2006 19:48:08
Replace the sub with a one that can take the power your amp can dole out.
This sub is gone and the best you can do is use it as a paper weight reminder of doing the abused thing on it.
Or, perform a post-mortum autopsy and see what happends to the guts of a sub when it's been abused. It's toast and just chock this one up to a hard lesson learned only once?
Yeah, your general assumptions are probably correct. The coil overheated, melted the adhesives and the adhesive ran down into the voice coil gap and fused the coil and cone.
Kinda sucks when we shoot ourselves in the foot huh?
Swez
MrBrownstone on 11/12/2006 20:23:47
Speakers are killed by a couple of main sources, heat, overexcursion, and physical damage.
An amplifier accurately rated at 300W can put out 600W fully clipped signal. In your case, you were already starting at 2x your speaker's capacity anyway.
We might want to consider your system design and the woofer enclosure before replacing the speaker. Why equipment do you have installed as part of your audio system? What type/size of enclosure are you using for the woofer.
markz on 11/13/2006 18:29:13
well alright! i was using a 1500w max 600rms audiophonics amp. 2ch. i have a pair of these kickers but the amp and speakers are a poor match because ohmage wise it dosent correspond. so tryin 2 hold off on a new 1ohm stable class d i bridged the amp @ 4 ohm and wired the speaker at 2ohm this dosent match also but it sounded pretty good! overall i dont think its the extra power that fried the sub jus 1 particular song i was playin real loud 4 the first time the song itself was of real poor quality and was sounding really distorted overall compared 2 all the other music i play and after bout a minute the sub stopped playing.. when i hooked up my other sub the one that didnt fry and observed the movement with this same song the cone was being pulled inward and not really moving very controlled.. as compared to everything else played in which it moved well and controlled! btw the box im usin is the spl design vented 2.25cuft. so tell me is my interpretatin of all this correct? or is it if i do the same hookup will i fry my next sub? because i dont think so the one that got fried played well for quite a few weeks without problems.. let me kno plz..
swez on 11/13/2006 20:49:00
Hard to say exactly what is going on in that last post, but can give a few thoughts for the future. (Assuming I understand what you just said correctly)
If using a bridged 2 channel and a 2 ohm sub, one would have been fine using only 1 channel on that amp and a 2 ohm sub. One could also use both subs here... one per channel (2 ohms) and been fine here too. One can also bridge the amp MONO and wire the sub pair for 4 ohms and would also be a perfect match.
Also, when using ported subs, it is wise to use a Subsonic Filter. (Infrasonic) to block lows below the port tuning frequency. (Very important filter) This protects a ported sub from "unloading", (losing control of cone movement) at higher SPL levels.
Not sure what music gave your sub the fits and made it crap out like that either. Did it have a lot of very deep bass tones in it? If these bass notes were well below tuning frequency, that might well have done it, coupled with excess power the sub was getting, as it was wired for 2 ohms. (over 1000 "dirty" watts of persistant input power, would indeed fry most good subs, rated at 300 RMS)
Since you still have one good sub left, may I suggest wiring it for 8 ohms to that amp bridged. This will net a safe 300 watts to the sub. Also, do you know the port tuning frequency of this enclosure?
FYI: Kicker's manual recommends an Infrasonic filter, -24dB/octave slope, starting at 25 Hz. for ported SPL boxes. See Kicker manual for details on bottom of page 9.
http://www.kicker.com/06/tech-support/manuals/manuals/2005/2005%20CompVR%20Sub%20Manual.pdf
Learn anything new?
Swez
Replies (4)
swez on 11/11/2006 19:48:08
Replace the sub with a one that can take the power your amp can dole out.
This sub is gone and the best you can do is use it as a paper weight reminder of doing the abused thing on it.
Or, perform a post-mortum autopsy and see what happends to the guts of a sub when it's been abused. It's toast and just chock this one up to a hard lesson learned only once?
Yeah, your general assumptions are probably correct. The coil overheated, melted the adhesives and the adhesive ran down into the voice coil gap and fused the coil and cone.
Kinda sucks when we shoot ourselves in the foot huh?
Swez
MrBrownstone on 11/12/2006 20:23:47
Speakers are killed by a couple of main sources, heat, overexcursion, and physical damage.
An amplifier accurately rated at 300W can put out 600W fully clipped signal. In your case, you were already starting at 2x your speaker's capacity anyway.
We might want to consider your system design and the woofer enclosure before replacing the speaker. Why equipment do you have installed as part of your audio system? What type/size of enclosure are you using for the woofer.
markz on 11/13/2006 18:29:13
well alright! i was using a 1500w max 600rms audiophonics amp. 2ch. i have a pair of these kickers but the amp and speakers are a poor match because ohmage wise it dosent correspond. so tryin 2 hold off on a new 1ohm stable class d i bridged the amp @ 4 ohm and wired the speaker at 2ohm this dosent match also but it sounded pretty good! overall i dont think its the extra power that fried the sub jus 1 particular song i was playin real loud 4 the first time the song itself was of real poor quality and was sounding really distorted overall compared 2 all the other music i play and after bout a minute the sub stopped playing.. when i hooked up my other sub the one that didnt fry and observed the movement with this same song the cone was being pulled inward and not really moving very controlled.. as compared to everything else played in which it moved well and controlled! btw the box im usin is the spl design vented 2.25cuft. so tell me is my interpretatin of all this correct? or is it if i do the same hookup will i fry my next sub? because i dont think so the one that got fried played well for quite a few weeks without problems.. let me kno plz..
swez on 11/13/2006 20:49:00
Hard to say exactly what is going on in that last post, but can give a few thoughts for the future. (Assuming I understand what you just said correctly)
If using a bridged 2 channel and a 2 ohm sub, one would have been fine using only 1 channel on that amp and a 2 ohm sub. One could also use both subs here... one per channel (2 ohms) and been fine here too. One can also bridge the amp MONO and wire the sub pair for 4 ohms and would also be a perfect match.
Also, when using ported subs, it is wise to use a Subsonic Filter. (Infrasonic) to block lows below the port tuning frequency. (Very important filter) This protects a ported sub from "unloading", (losing control of cone movement) at higher SPL levels.
Not sure what music gave your sub the fits and made it crap out like that either. Did it have a lot of very deep bass tones in it? If these bass notes were well below tuning frequency, that might well have done it, coupled with excess power the sub was getting, as it was wired for 2 ohms. (over 1000 "dirty" watts of persistant input power, would indeed fry most good subs, rated at 300 RMS)
Since you still have one good sub left, may I suggest wiring it for 8 ohms to that amp bridged. This will net a safe 300 watts to the sub. Also, do you know the port tuning frequency of this enclosure?
FYI: Kicker's manual recommends an Infrasonic filter, -24dB/octave slope, starting at 25 Hz. for ported SPL boxes. See Kicker manual for details on bottom of page 9.
http://www.kicker.com/06/tech-support/manuals/manuals/2005/2005%20CompVR%20Sub%20Manual.pdf
Learn anything new?
Swez
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