Wattage
08-26-2005, 05:41 AM
#1
0 Watt CAFz'r
Thread Starter
Join Date: Jun 2005
Posts: 24
Hey guys sorry if this sounds like a noob question but I was wondering what tool or instrument you can use to test Wattage.
Meaning if I have my amp hooked up to my subs and I am running them and want to find out the true wattage going to the subs? Is there a way to do this...
thanks guys
Meaning if I have my amp hooked up to my subs and I am running them and want to find out the true wattage going to the subs? Is there a way to do this...
thanks guys
08-26-2005, 07:36 AM
#3
08-26-2005, 07:55 AM
#4
50 Watt CAFz'r
Join Date: May 2004
Posts: 88
if that is so how come i get some wacked out number when i calculate mine ????? i have an audison LRX 1.400 and i measured 58.9 and using this calcualtion it says i'm doing over 3000watts at .9 ohms which I highly doubt!!!!! anyone have any input on this????
08-26-2005, 01:07 PM
#7
Guest
Posts: n/a
^ Essentially, while your speaker load may mathematically be 0.9 ohms, in the real world, loaded into a box that is loaded into a car, and connected by wiring to the amp, you are going to be at least double your calculated impedance.
The easiest way to measure impedance is with an old Rockford IM-1. Try to find a shop with one.
The easiest way to measure impedance is with an old Rockford IM-1. Try to find a shop with one.
08-26-2005, 03:13 PM
#8
Yankee
Join Date: Oct 2003
Posts: 3,599
I just put this together from the comments made so far plus a little electricity 101
Resistance (wire + woofer) + inductance (nature of a circuit to oppose a change in current flow) + capacitance (nature of a circuit to oppose a change in voltage) = electrical impedance (ability of car to deliver power (voltage x current) to amp may limit this)
Box mechanical impedance (ported/ sealed) + automobile impedance (open window vs. shut and speaker location) + mechanical impedance (from spider and surround + any cone flex) = mechanical impedance
Mechanical impedance + electrical impedance = opposition to current flow
Resistance (wire + woofer) + inductance (nature of a circuit to oppose a change in current flow) + capacitance (nature of a circuit to oppose a change in voltage) = electrical impedance (ability of car to deliver power (voltage x current) to amp may limit this)
Box mechanical impedance (ported/ sealed) + automobile impedance (open window vs. shut and speaker location) + mechanical impedance (from spider and surround + any cone flex) = mechanical impedance
Mechanical impedance + electrical impedance = opposition to current flow
