|Multi-Way Conventional loudspeakers with crossovers|
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|
|30th June 2006, 11:56 PM||#1|
Join Date: Oct 2005
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)
|Thread Tools||Search this Thread|
|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?|