Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

baffle step in serial filter
baffle step in serial filter
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 30th June 2006, 11:56 PM   #1
Marcelinho is offline Marcelinho  Netherlands
diyAudio Member
Join Date: Oct 2005
Default baffle step in serial filter

I need some help with the filter.

First some fact's

I build a speaker with the following drivers:
scanspeak d2905/97000 tweeter
vifa pl11wh09 4" midwoofer
scanspeak 18w/8545-00 6,5" woofer

They are build in a 1 meter high pvc pipe with a 19 cm diameter.
The front is small (13 cm) with nice rond edges.
The vifa unit is build in a closed enclosere and works until 160 hz (filterd by enclosure only).
The woofer is downfiring and is filtered with 6 db paralell at 160hz

At first several filter design between tweeter and midwoofer were having a peak in the 1500-2500hz region.
I tried parallel and serial filters of various orders and designs.
Adding a coil of various values for baffle step compensation in a 6 db serial config. didn't solve my problem.
At last i got a very good result ( by ear) with a 6db serial filter crossed at 3000 khz with no baffle step comp.

At this point i am not satisfied with the downfiring woofer and the sound in the lower frequencies. I also suspect that the midwoofer has to work very hard in the lower frequencies, so i want to cross it at a higher frequency. So i am planning to build a new enclosure (probably mdf) where the woofer is in the front baffle.

Now the question:
If i let the midwoofer start where the baffle step begin's (somewhere at 600hz still needs to be checked), can i ajust the higher level due to baffle step merely by adding a resister or l-pad to the midwoofer ( because the increase in output level due to baffle step only affects the midwoofer?)

Should i also cross where the baffle step stop's? (around 2500 Hz)
so only the mid woofer is affected with baffle step compensation)
  Reply With Quote


baffle step in serial filterHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Does open baffle suffer from baffle step? 454Casull Multi-Way 15 19th May 2012 04:12 PM
Parallel or serial notch filter in a crossover? Jonasa Multi-Way 12 3rd May 2012 11:54 PM
baffle Step rgrayton Full Range 33 5th December 2004 12:16 AM
Baffle Step + Sub Aural Dan Multi-Way 7 9th October 2004 09:23 PM
baffle step help. AudioGeek Multi-Way 3 10th February 2004 12:02 PM

New To Site? Need Help?

All times are GMT. The time now is 01:15 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio