the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

6th order crossover design


Post ReplyPost New Topic
< Prev Topic Next Topic >
dgonsior24 
Member - Posts: 1
Member spacespace
Joined: May 10, 2007
Location: United States
Posted: May 10, 2007 at 3:37 PM / IP Logged  
i am very new to crossover design.  in a 6th order, 2-way network, lets just say for argument sake; you wanted the woofer crossed over at 800 hz lp, and the tweeter crossed over at 3000 hz hp.  charts would suggest a 1.6 mh inductor for the woofer and a 6.6 mf cap for the tweeter. (for 8 ohm) my question is this, instead of running these in series with the speakers, could you run them parallel  using a 25 mf cap for the woofer and a .42 mh inductor for the tweeter??
haemphyst 
Platinum - Posts: 5,054
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: May 10, 2007 at 3:51 PM / IP Logged  
First off, you mean a First Order, 6dB/octave crossover. 6th order crossovers are EXCEPTIONALLY large, requiring MANY passive devices, and are usually left in the domain of active crossovers, especially digital ones.
Secondly, yes, you CAN, but inductors are FAR more efficient at passing current (for the woofer) than are capacitors. Also, inductance distortions are FAR more noticeable in the highs, this is why you keep the passive components where they are. Additionally, if you wire them in parallel like that, below the crossover point for the tweeter, and above the crossover point for the woofer, the amplifier is seeing a short. The resistance (of the driver's voice coils) needs to be in series with the capacitance, and the same applies for the low pass... You would effecively have two 8 ohm loads in parallel, in parallel with an infinitely low (dead short) impedance. Amps don't like that very much...
And C, you'd NEVER, EVER chose crossover points like those in a two way system, that'd sound like CRAP! 80% of your hearing is in that critical range of 800 to 3K!
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 10, 2007 at 8:03 PM / IP Logged  

I was about to say *WOO HOO* somebody has interest in a 6th order crossover, must be some pretty critical components and a cracker jack designer, let me at 'em!  I have a done a few couple 6th order electrical designs and several 3rd order that results in a 6th order acoustic with the right drivers, let's talk!

But alas, that is not the case.  haemphyst got here first and as usual he is right. 6th order crossover design -- posted image.

Support the12volt.com
bellsracer 
Silver - Posts: 703
Silver spacespace
Joined: January 14, 2006
Location: United States
Posted: May 10, 2007 at 8:39 PM / IP Logged  
lol... I never realized that T12V is a race... very entertaining guys ^-^ I cheer for you all
Never send your ducks to eagle school.
The difference between ordinary and extraordinary is that little extra.
The 3Ls of life: Learn from the Past, Live for the Present, Look to the Future.

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Thursday, March 28, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer