WHat kind of power do I need for these subs? - Page 2 - Tilted Forum Project Discussion Community

Nelson · 10-03-2004, 03:06 PM

www.carsound.com
Many of the industries most respected talents post there often. There are tons of others - but this one seems to have less BS/punk kids.

Not sure what you mean by power handling and peak power? Sounds like part amp spec and part woofer spec.

krwlz · 10-03-2004, 05:43 PM

http://www.infinitysystems.com/caraudio/product.aspx?ProdId='REF610A'&Ser=REF&Cat=AMP

Read all the power capabilities for this amp... WHats the differance between the power it lists normally, and the dynamic power?

mercury-hg · 10-05-2004, 02:44 PM

OK, say a power source (amp) delivers a waveform to a 4 ohm load (speaker). At any instant in time, the power delivered is P = V^2/R. That is the dynamic power that Infinity lists... it's a maximum instantaneous power, usually called peak power by other companies. i guess infinity's marketing decided that dynamic was more mysterious and thus more effective.

dynamic or peak power is not a very useful measure though. better is the sustained power that the amp can deliver without over-exerting its components. the RMS (root mean squared) power is related to the RMS (average) voltage of a sinusiod. RMS Power = Vrms^2/R = (Vmax/0.707)^2/R. match up this power with the power handling of your sub. overshooting or undershooting doesn't matter much, like i've said before.

krwlz · 10-05-2004, 03:22 PM

Ok Mercury, I think that that is the most complete, and helpful answer I've gotton yet. Thank you very very much.

And I assumed that was what the dynamic power was, but I was awefully confused.

The physics formula's I could have worked out to determine a lot of this, but I was looking for more real world answers, rather then number crunching.

Thanks for clearing it all up for me.

10-03-2004, 03:06 PM	#41 (permalink)
Nelson Tilted	www.carsound.com Many of the industries most respected talents post there often. There are tons of others - but this one seems to have less BS/punk kids. Not sure what you mean by power handling and peak power? Sounds like part amp spec and part woofer spec. __________________ Nelson

10-03-2004, 05:43 PM	#42 (permalink)
krwlz Fledgling Dead Head Location: Clarkson U.	http://www.infinitysystems.com/caraudio/product.aspx?ProdId='REF610A'&Ser=REF&Cat=AMP Read all the power capabilities for this amp... WHats the differance between the power it lists normally, and the dynamic power?

10-05-2004, 02:44 PM	#43 (permalink)
mercury-hg Psycho Location: U of MD	OK, say a power source (amp) delivers a waveform to a 4 ohm load (speaker). At any instant in time, the power delivered is P = V^2/R. That is the dynamic power that Infinity lists... it's a maximum instantaneous power, usually called peak power by other companies. i guess infinity's marketing decided that dynamic was more mysterious and thus more effective. dynamic or peak power is not a very useful measure though. better is the sustained power that the amp can deliver without over-exerting its components. the RMS (root mean squared) power is related to the RMS (average) voltage of a sinusiod. RMS Power = Vrms^2/R = (Vmax/0.707)^2/R. match up this power with the power handling of your sub. overshooting or undershooting doesn't matter much, like i've said before.

10-05-2004, 03:22 PM	#44 (permalink)
krwlz Fledgling Dead Head Location: Clarkson U.	Ok Mercury, I think that that is the most complete, and helpful answer I've gotton yet. Thank you very very much. And I assumed that was what the dynamic power was, but I was awefully confused. The physics formula's I could have worked out to determine a lot of this, but I was looking for more real world answers, rather then number crunching. Thanks for clearing it all up for me.