Thanks Pit,
I also found this. The address is similar to your name...is this your page?: http://hometown.aol.de/hphinder/homepage/index.html
Look at the bottom of the page. I assume I run this in series off the positive speaker terminal?
Thanks,
Jeff
I also found this. The address is similar to your name...is this your page?: http://hometown.aol.de/hphinder/homepage/index.html
Look at the bottom of the page. I assume I run this in series off the positive speaker terminal?
Thanks,
Jeff
Jhovis,
As you probably know there are two types of notch filters, series and parallel. The parallel unit runs the notch elements in parallel but in series with the driver. This is the one Pit is most likely discussing.
The series unit runs the notch elements in series but are paralleled to the driver. This is most often used for impedance matching and is less commonly used to actually notch. He can confirm this.
EDIT: I noticed he explains this in his site and yes he is talking about a a parallel filter.
As you probably know there are two types of notch filters, series and parallel. The parallel unit runs the notch elements in parallel but in series with the driver. This is the one Pit is most likely discussing.
The series unit runs the notch elements in series but are paralleled to the driver. This is most often used for impedance matching and is less commonly used to actually notch. He can confirm this.
EDIT: I noticed he explains this in his site and yes he is talking about a a parallel filter.
Jeff,
this is crazy! I've given up aol some five years ago and they still have that thing on their server?
The values shown on that page are for the 103Sigma which is quite a different animal - to save money, try the 1197 values first and play with the resistor. A higher value gives you a deeper notch - it's a matter of personal taste and favourite (or enforced) SPL level whether you shoot for ~linear or a slight "loudness" effect.
Cheers,
Pit
this is crazy! I've given up aol some five years ago and they still have that thing on their server?
The values shown on that page are for the 103Sigma which is quite a different animal - to save money, try the 1197 values first and play with the resistor. A higher value gives you a deeper notch - it's a matter of personal taste and favourite (or enforced) SPL level whether you shoot for ~linear or a slight "loudness" effect.
Cheers,
Pit
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