Can anyone teach me what value of component and connection should be for:
- 4ohm tweeter to High pass at 2kHz
- 4ohm mid bass band pass at 50Hz to 2kHz

Thanks.

This post has been edited by kww: Jan 21 2009, 07:55 PM

Chef, that is very details explanation. But I am still not very sure of the how to consider all the small parameters. Here the links where you will find all the small details including the off axis graph:
tweeter: http://www.tymphany.com/d2904_600000
mid bass: http://www.tymphany.com/18w_4531g00

Do you have extra components that can sell to me?
Thanks for all the help. Really appreciate it.

It is for car. Thanks.

Hi chefsinc67,
Here is a scratch i made:

I want to do band pass for the mid woofer at 100Hz that's why I put in 190uF and 14mH but I doubt I can find such value also not sure is this correct way to do it.

Please comment. Thanks.


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Hi chefsinc67,
Ok, I have changed it to something like the attachment.

My reason for the band pass is because of the huge jump in impedance from 100Hz (4ohm) to 30Hz (35ohm), I think that is the reason you suggested zobel filter. And also i am worry it will vibrate the door panel if play too low.

Next task will be the parts, any suggestion what to use?
Thanks.


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Any recommendation on inductor to use? My budget is below rm50 per pcs.
Thanks.

I try look for inductor in Farnell, there are 2 type of inductor material: mainly ferrite and iron. To get one that can support 1A and above the tolerance will be more than 10%. Some are call "coke" like:
http://my.farnell.com/bourns-jw-miller/571...ctor/dp/1189597
or
http://my.farnell.com/bourns-jw-miller/525...hoke/dp/1103553
Can I use this?

Abel, copper foil = CFC? Better than air core? Where you get it?
Thanks.

This post has been edited by kww: Feb 5 2009, 11:58 AM