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Old 6th January 2011, 06:02 PM   #1
8675309 is offline 8675309  United States
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Default Impedance EQ parts?

I spent a couple of hours searching the net and this site for my answer. I tend to use cheap parts for my crossover design and testing. I then use higher quality parts for the final build. My question is this; does it matter on the part quality of an impedance EQ? I have been working on an impedance eq that has been pricey using cheaper parts. Will I benefit by upgrading to higher quality parts?

For example going from a cheaper non polarized cap to say a polypropylene cap? And so on with the inductors and resistors. I am still new to impedance eqs, but I am trying to learn by experimenting with different things.

The impedance filter has been designed for a full range driver paired with a supper tweeter; is this a good idea? If not please help me understand why this is not a good idea.

Thanks
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Old 8th January 2011, 12:21 AM   #2
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I believe you mean "passive crossover" and, yes the quality of the parts matter.
In these types of x-over only use non-polorized capacitors. Inductors should be air-core only as any metallic core will saturate (at higher audio levels) and therefore distort the sound.
I have not tried it, but I think that you could do a good simulation of a x-over in LT-Spice
E
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Old 8th January 2011, 01:54 AM   #3
8675309 is offline 8675309  United States
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No not passive only

I was talking about Impedance EQ only. Passive I do use quality parts; with an impedance eq, do you need quality? IMO this is a circuit only and not a SQ build that is why I am asking if it will work? I am a 2 time world champion car audio guy so I understand active sound. I can build passive xovers and have been for 20 years. My question is on zobel or impedance xovers.
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Originally Posted by mickeymoose View Post
I believe you mean "passive crossover" and, yes the quality of the parts matter.
In these types of x-over only use non-polorized capacitors. Inductors should be air-core only as any metallic core will saturate (at higher audio levels) and therefore distort the sound.
I have not tried it, but I think that you could do a good simulation of a x-over in LT-Spice
E
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Last edited by 8675309; 8th January 2011 at 01:56 AM.
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Old 8th January 2011, 03:02 AM   #4
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Ddummy me, enlighten me as to what an impedance eq/crossover is.

Thanks, E
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Old 8th January 2011, 06:03 AM   #5
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Quote:
Originally Posted by 8675309 View Post

My question is this; does it matter on the part quality of an impedance EQ?
I doubt. RC and RLC are shunt networks. There's no real need to use costly polypropylenes, resistors and inductors. As long as they are properly rated, it's fine.

Mike
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Old 8th January 2011, 07:28 AM   #6
8675309 is offline 8675309  United States
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mickeymoose
sorry for beeing rude. Had a bad day and I should have never been rude.
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