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How do I do a DIY Passive crossover?

post #1 of 8
Thread Starter 

I'm feeling really, really bored now that it's my holidays, 3 months of it. I've got some spare BA drivers ripped out from broken IEMs (cable issues or, in the case of my TDK BA200, a busted resistor bulb) and I thought I'd just play with them a little.

Note: This is just for fun. No serious stuff in here. I'm just experimenting and who knows, I'll get something nice out of this.

Anyway, anyone knows how to design/make a passive crossover? I don't want to start building an IEM full of circuits and stuff.

post #2 of 8

Have you read the DIY-IEM thread? 

 

A passive crossover is (part of) a circuit. 

post #3 of 8

 

Can you post pictures of TDK BA200. It uses driver from Sonion which comes with crossover.
http://www.sonion.com/Products/Transducers/Receivers/1723%20AcuPass%20TM.aspx

post #4 of 8
Thread Starter 
Quote:
Originally Posted by MuZo2 View Post
 

 

Can you post pictures of TDK BA200. It uses driver from Sonion which comes with crossover.
http://www.sonion.com/Products/Transducers/Receivers/1723%20AcuPass%20TM.aspx

 

Sorry, not at the moment. I'm at my cousin's house. Staying in for a couple of days and I don't have the drivers on hand. I do know that they have their own circuit, but I just want to experiment with them.

Quote:
Originally Posted by nikongod View Post
 

Have you read the DIY-IEM thread? 

 

A passive crossover is (part of) a circuit. 

I know. I was wondering whether there is a way to shrink it smaller than what I am seeing all over the Net. Also, I'd prefer some links I can have a look at. Thanks.

post #5 of 8

In case of IEM and case of TDK BA200 you will have just a capacitor and resitor.

• Caps roll off the LF’s (high pass)
• Resistors in series with Woofers pull out the LF bump

Tweeter: 2323 through  series cap
Woofer : Resistor in series.
You will have to experiment with values

In addition you have acoustic filter which will smooth the response. Damper you will find in stem of TDK BA200

 

 

 

post #6 of 8
Quote:
Originally Posted by AONihilist View Post

 

I know. I was wondering whether there is a way to shrink it smaller than what I am seeing all over the Net. Also, I'd prefer some links I can have a look at. Thanks.

 

SMT parts? 

 

For example here is a replacement board for the Shure E5c. 

 

No reason you cant air-wire the components though. 

post #7 of 8
Thread Starter 
Quote:
Originally Posted by MuZo2 View Post

In case of IEM and case of TDK BA200 you will have just a capacitor and resitor.
• Caps roll off the LF’s (high pass)

• Resistors in series with Woofers pull out the LF bump
Tweeter: 2323 through  series cap

Woofer : Resistor in series.

You will have to experiment with values


In addition you have acoustic filter which will smooth the response. Damper you will find in stem of TDK BA200


What I was originally thinking was to use the BA200's drivers as a springboard and then add drivers around it to improve on the sound. But I'll try your idea out.
Quote:
Originally Posted by nikongod View Post

SMT parts? 

For example here is a replacement board for the Shure E5c. 



No reason you cant air-wire the components though. 
Air-wire meaning? Directly wiring each to another without the caps and resistors?
post #8 of 8
Quote:
Originally Posted by AONihilist View Post

Air-wire meaning? Directly wiring each to another without the caps and resistors?

 

You wire the caps and resistors to each other without a circuit board. 

 

Quote:
Originally Posted by nikongod View Post
 

Have you read the DIY-IEM thread? 

 

 

No, I have not, have you? 

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