Tuning my pipe

mikee55 · 23rd April 2007, 07:02 PM

Hello, I have been given this by WinLsd Pro as its sugestion for my Audax box

Looks good, but I'd prefer to get down to 40hz at least.Is this right?

I tried to change Tuning Freq to 40 for same size box and the curve didn't look right. What an I doing wrong, please?

Cheers Mike

richie00boy · 23rd April 2007, 10:09 PM

As Fs is about 61Hz, it's not going to go much lower than that with a flat response.

I suggest your best option is to use a filtered alignment, using an active 2nd-order filter to obtain a flat response. You can look at the QB5 articles on the ESP website, but I suspect you may find the calculations not very intuitive. The other option is a more common Keele 6th-order system.

454Casull · 24th April 2007, 12:28 AM

No innuendo to see here, folks.

mikee55 · 24th April 2007, 08:14 AM

Is this the way to go?

Or maybe I should stick with the first one.

Cheers

Mike.

23rd April 2007, 07:02 PM	#1
mikee55 diyAudio Member Join Date: Dec 2005 Location: West Howe	Tuning my pipe Hello, I have been given this by WinLsd Pro as its sugestion for my Audax box Looks good, but I'd prefer to get down to 40hz at least.Is this right? I tried to change Tuning Freq to 40 for same size box and the curve didn't look right. What an I doing wrong, please? Cheers Mike __________________ If it don't work, I'll fix it in the mix! Or visit http://lsdp.proboards.com/index.cgi

23rd April 2007, 10:09 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	As Fs is about 61Hz, it's not going to go much lower than that with a flat response. I suggest your best option is to use a filtered alignment, using an active 2nd-order filter to obtain a flat response. You can look at the QB5 articles on the ESP website, but I suspect you may find the calculations not very intuitive. The other option is a more common Keele 6th-order system. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

24th April 2007, 12:28 AM	#3
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	No innuendo to see here, folks. __________________ Building a 2.1 system out of a 3/4"x4'x8' sheet

24th April 2007, 08:14 AM	#4
mikee55 diyAudio Member Join Date: Dec 2005 Location: West Howe	Cheers Richie... Is this the way to go? Or maybe I should stick with the first one. Cheers Mike. __________________ If it don't work, I'll fix it in the mix! Or visit http://lsdp.proboards.com/index.cgi

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