Big Lo Posted October 15, 2009 Report Posted October 15, 2009 I understand that a given sub in a given enclosure does not remain a "#" ohm speaker. The actual impedance is dependant on the frequencies being played, or the resonance of the box or some shit like that. Can anyone explain this to me in detail and how will it affect anything? Oh and I'm kind of new and this is my first ever topic, so if I done anything wrong or posted it on the wrong section let me know.
JSwongerAA Posted October 15, 2009 Report Posted October 15, 2009 Your good posting here. X2 on the Impedence rise, I know it's calculated after you measure the clamped power on your amp (AC Ammeter around the postitve speaker terminal times the peak AC voltage on the positive and negative terminals). I'm sure its in my MECP Advanced installer book but i would rather have someone explain it here.
andym85 Posted October 15, 2009 Report Posted October 15, 2009 answer from termpro: "The DC resistance is the measurement of the coil at rest. When the cone starts moving, the magnetic field associated with the magnet and the moving coil increases the resistance of the voice coil. Usually the more resonant the enclosure, the higher the impedance rise. Most competitors try to factor rise into the equation so they can get the most power out of their amps. " i likes me some audio stuff...
finkster Posted October 15, 2009 Report Posted October 15, 2009 so the more pressure inside the box the more rise? or the opposite? DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living
Big Lo Posted October 16, 2009 Author Report Posted October 16, 2009 So should it be something I should be worried about? will it damage the amplifier? And how different would it be on a lets say...30Hz tuned box compared to a 45Hz tuned box? or does it differ depending on the shape of a box? sorry for all the questions but I'm really trying to understand this. I appreciate all of the replys.
Kapetol T Posted October 16, 2009 Report Posted October 16, 2009 So should it be something I should be worried about? will it damage the amplifier? And how different would it be on a lets say...30Hz tuned box compared to a 45Hz tuned box? or does it differ depending on the shape of a box? sorry for all the questions but I'm really trying to understand this. I appreciate all of the replys. Don't worry about it. It is dependent on the speakers specs, the type of box, the tuning, the volume, etc.. It will not hurt anything, this happens in all speaker systems.
knowledge Posted October 16, 2009 Report Posted October 16, 2009 im still trying to figure all that out. REFF'SMy linkEBAYhttp://feedback.ebay...ck&myworld=trueI love car audio so much because I will never be done. I can never win, and I will never get it finished or perfect. It always has me coming back for more, I can never get my fill of it, but I get what I need.
Big Lo Posted October 16, 2009 Author Report Posted October 16, 2009 Don't worry about it. It is dependent on the speakers specs, the type of box, the tuning, the volume, etc.. It will not hurt anything, this happens in all speaker systems. Alright man I appreciate the reply, one less thing I got to worry about I guess.
Big Lo Posted October 16, 2009 Author Report Posted October 16, 2009 Your good posting here. X2 on the Impedence rise, I know it's calculated after you measure the clamped power on your amp (AC Ammeter around the postitve speaker terminal times the peak AC voltage on the positive and negative terminals). I'm sure its in my MECP Advanced installer book but i would rather have someone explain it here. Appreciate the reply, I'm going to try that when I'm able to get an ammeter, and where can I get one of them books?
Big Lo Posted October 16, 2009 Author Report Posted October 16, 2009 I appreciate all the info everybody!
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