Hello.
First of all THANK YOU for this great Software,it's a piece of free gold that can do anything you want even compared to commercial competitors.
Lately i want to make impedance and thiele/small calculation on some unknown drivers i have.
I use a Xonar Essence STX but i could NOT calibrate it,the result was hairy,so i've gone with the onboard sound card,that gave me the results i wanted.
But then again i still have problems.
Before i continue,i want to ask about the impedance connection because i don't really know if i have it right.
I've made and connected the cables exactly as on this schematic:
http://www.hometheatershack.com/roomeq/wizardhelpv5/images/impedancesetup.jpg
I assume that the left/right input/output are the positive wires of each side,but where is the common?
I mean,i don't really get where the speaker is connected,i see the one to the (assumed) positive cable,but the other one on the graph connects to nothing.
I ended up do the following:
1) Make a bridge from the +right output to the -right of the input after the Rsense - I still get anomalies,nothing fixed.
2) Connect the +right output after the Rsense to the speaker driver then the negative of the driver to the -right of the input - I hear the driver whistling but still a flat 22ohm line.
Does someone knows anything more than i do?
As for the calibration part.
I connected the inputs to the output as the help page says and assumed that i had to connect the common of the input as i did mentioned above,i did the calibration with a 22ohm resistor that reads exactly 22R on the multimeter,everything seemed fine,but then ALL the times when i do a measurement the output on the graph is a flat 22ohm line,even if i have everything disconnected from the sound card's input.
I've spend 2-3 days trying to do a measurement with various Software but nothing "felt" friendly,and now i have the best of them but i have no idea what's wrong with what i do. :scratch:
First of all THANK YOU for this great Software,it's a piece of free gold that can do anything you want even compared to commercial competitors.
Lately i want to make impedance and thiele/small calculation on some unknown drivers i have.
I use a Xonar Essence STX but i could NOT calibrate it,the result was hairy,so i've gone with the onboard sound card,that gave me the results i wanted.
But then again i still have problems.
Before i continue,i want to ask about the impedance connection because i don't really know if i have it right.
I've made and connected the cables exactly as on this schematic:
http://www.hometheatershack.com/roomeq/wizardhelpv5/images/impedancesetup.jpg
I assume that the left/right input/output are the positive wires of each side,but where is the common?
I mean,i don't really get where the speaker is connected,i see the one to the (assumed) positive cable,but the other one on the graph connects to nothing.
I ended up do the following:
1) Make a bridge from the +right output to the -right of the input after the Rsense - I still get anomalies,nothing fixed.
2) Connect the +right output after the Rsense to the speaker driver then the negative of the driver to the -right of the input - I hear the driver whistling but still a flat 22ohm line.
Does someone knows anything more than i do?
As for the calibration part.
I connected the inputs to the output as the help page says and assumed that i had to connect the common of the input as i did mentioned above,i did the calibration with a 22ohm resistor that reads exactly 22R on the multimeter,everything seemed fine,but then ALL the times when i do a measurement the output on the graph is a flat 22ohm line,even if i have everything disconnected from the sound card's input.
I've spend 2-3 days trying to do a measurement with various Software but nothing "felt" friendly,and now i have the best of them but i have no idea what's wrong with what i do. :scratch: