![]() This style of loudspeaker has been on the fringe of the audio mainstream for many years with just a few smaller companies building and marketing this enclosure design. The most common example of a loudspeaker that relies on a quarter wavelength acoustic standing wave is a transmission line enclosure. Welcome to my quarter wavelength loudspeaker design website. Xmax on the graphs, and group delay, so techically-oriented answers are preferred.Quarter Wavelength Loudspeaker Design Quarter Wavelength Loudspeaker Designįacebook Group : DIY Transmission Line Loudspeakers - Theory, Design, and Buildingįacebook Group : DIY Open Baffle Loudspeakers - Theory, Design, and Building So, what exactly is "Transfer Function Magnitude" graph showing me?įWIW, I understand voltage drive, phase relationships, power and I'm looking for total SPL output of the cabinet into 1/2-space (which is default reference if I understand correctly). I've read through the help and instruction files thoroughly, but if the explanantion is there, I just missed it.:blink: WinISD Help says this is what you want most of the time, but I don't understand what the "Transfer Function Magnitude" graph is showing me OR why it is so different than the "SPL" graph. I am confused about the substantial differences I am seeing "Transfer Function Magnitude" graphs vs. I've been working with WinISD PRO (Alpha) for a week or so, and recently discovered what appears to be an error or anomaly, unless I jost don't understand something here. ![]() I may need to step it back down to Win2000 or even Win98 (!))įrankly, I don't see me buying a new Win laptop just for system testing. its pretty darned slow running WinXP Pro. Well, its a bit older Laptop than I thought -ħ00mHz AMD processor, 64 meg mem, 10g HD. I just wiped an old install of Win2k from it and installed WinXP. Īnd it was corrupted when I got it (WinME that had crashed) Its a "gift" from my ex-pastor when he left the area. (It MUST be good, it has JBL Pro badge over the little built-in speakers!) The only Win laptop I have is an old Compaq Presario 12XL400, Okay, so which RTA (Real Time Analyzer) software is worth having?Īll my Macs are desktop machines - and a laptop is better. ![]() ![]() I need to get an RTA to do what I try to do right. Calculated values are only starting points and you need some test equipment to get it right. ![]() You don't need much to design ported and sealed boxes, hand calculator methods work too. LEAP is on the very high end but it does everything. WinIsd is a damn good program for most appplications. ![]()
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January 2023
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