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TB W4-657s Crossover Help (1 Viewer)

rich r

Stunt Coordinator
Joined
Jul 29, 2001
Messages
56
Hi all,


Im Trying to design a single driver full range speaker similar to
CSS ELF1.5DK
. I have Designed a Vented box using WinISD yeilding in a 6Litre box with a F3 of 69 Hz. My problem is I would like to Pad down the 5KHz to 15KHz to as flat as possible, but im not sure how to do this. Could someone assist me in doing this. Attached is the frequencey response graph of the driver.


thanks in ADvance for any help

 

Mark_E_Smith

Second Unit
Joined
Jan 10, 2002
Messages
275
That is the manufactures published frequency response and is most likely NOT what you will have in an enclosure of your design. Build the enclosure and see what it sounds like. If you have access to an spl meter or better yet a measurement system like Clio, make a measurement so you can adjust the response. You will need some kind of baffle step compensation. Usually an inductor around 500 Hz and a bypass resistor to reduce the spl 3 to 6 dB after 500 Hz. This is probably more important than a notch filter for a POSSIBLE peak at 10 kHz.
 

rich r

Stunt Coordinator
Joined
Jul 29, 2001
Messages
56
Thanks for the input,

I am going to build my box and ill update this thread with my response data
 

Dan Wesnor

Second Unit
Joined
Apr 28, 1999
Messages
389
If you can generate .frd and .zma files, I can knock out a filter with baffle step compensation and flatten the notch in about 15 minutes.

If you can't measure them, you can use SPL Tracer (http://www.pvconsultants.com/audio/utility/spl.htm) to get them from the manufacturer's graphs. While there can be some discrepancies in manufacturer's graphs and in-box measurements, I should still be able to do better with traced info than could be done by ear.
 

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