Home
AudioAsylum Trader
High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

For Sale Ads

FAQ / News / Events

 

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.

You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login


Login to access features only available to registered Asylum Inmates.
    By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username:

The Name that you picked or by default, your email.
Forgot Moniker?

 
 

Examples "Rapper", "Bob W", "joe@aol.com".

Password:    

Forgot Password?

 Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:  
Your Email:  
Subject:  

Message Comments

   

Original Message

RE: What do you make of this? (Impedance curves)

Posted by Mr_Steady on March 13, 2017 at 17:25:00:




Sorry Pix, the only thing I can offer you is the easy way out. The graphs are for the ALK Universal crossover. It is a first order for woofer/mid and second order for mid/tweeter, and it's right at the points you want.

There was a lot of talk recently on the Tube diy forum about phase shift, and phase shift in crossovers. You can see from the middle graph that there is no appreciable phase shift with this three way crossover. Also the impedance stays within a six to eight ohm tolerance.

What I'm trying to say is these crossovers are designed right. You could pull your hair out trying to design one as good, or you could just spend the $320US. It's too bad but Mr. K used to publish his schematics, BOM, and layouts of his crossovers for diy'ers, but one guy started to build them for commercial gain, so he took them down. That really hurt guys like you.

The autoformer on it will attenuate down 18db, so it will work for you. He also has second order and 120db brickwall filters.

Thinking about it, your woofer goes so high. With a first order slope your woofer is going to be putting out significant signal at 4000Hz. Maybe 10db down before it's rolloff? At some point I think you should try a steep filter on your woofer. Probably asymmetrical like 24/12, or 48/12. Even 24/24. An electronic crossover would make it much easier, and try a nice analog active crossover like the Marchand. I think you will be playing at this for awhile. :)

-----------------------------------------------------------------