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Old 11th May 2005, 05:43 PM   #21
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Default programmer

nice to see a fellow programmer on the board, you just started so learning basic or your a historian studying the 1980's?.
Sometime if you can you can get a hold of Visual Basic( .net?) I like it the best for most applications. Javas really popular but I find development takes too long and if I just need to crunch numbers its hard to beat C. I've been taking the lazy route for most stuff I usually have been doing excel sheets for passive/active crossovers and some of the box design.

If you pick up the current car audio and electronics(June 2005 Pg10) mag he mentions his program that only uses 3 speaker specs to tune a box, haven't had a chance to check it out yet.

BTW did you check the # of reads of this post? its only been u and me talking
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Old 11th May 2005, 07:35 PM   #22
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no, I'm an old DOS dog from DOS 2.11.
at the time, all I had was BASIC


I've used C and very extensive batch files in DOS

and yes, we are the only ones
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Old 4th September 2005, 04:59 AM   #23
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just found this thread again how did your box turn out?
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Old 6th September 2005, 04:13 AM   #24
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I haven't built it yet, you know measure 1000 times, cut once.

This is my current design for a 4th order bandpass:

http://spaces.msn.com/members/SPKRBO...um_albumid=cns!1pemNoB1O49djUAIeA-2L3ow!118&_c11_PhotoAlbum_spaReturnToFull=1&_c11_P hotoAlbum_spaProcess=1&_c=PhotoAlbum&_c02_owner=1
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Old 6th September 2005, 02:30 PM   #25
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looks ok but I dont have alot of experience with bandpasses. Whats your frequency response look like?
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Old 6th September 2005, 03:11 PM   #26
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If you look on my website www.readresearch.co.uk in the Utilities section you will find a simple vent calculator that I have found works great in practice, and a spreadsheet Min Vent Size Box where you can see the formula for vent length I use.

The formula I use is from Loudspeaker Design Cookbook.
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Old 7th September 2005, 12:32 PM   #27
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Using WinISD, I've posted my transfer function magnitude, transfer function phase, SPL and cone excursion graphs, here:

http://spaces.msn.com/members/SPKRBO...paFolderID=cns!1pemNoB1O49djUAIeA-2L3ow!118&_c=PhotoAlbum&_c02_owner=1
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Old 8th September 2005, 04:15 AM   #28
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Must be a bad link. I couldn't access it.
Soooo, try this.

http://spaces.msn.com/members/SPKRBOX1/
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Old 9th September 2005, 01:32 AM   #29
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if you click on the stuff on the left it works... Its probably something that blocks 3rd party. Like how some websites dont work with a google image search(tripod). Roll off after 50Hz... I guess thats ok if you want output. Transfer function phase is above me still so meh looks ok for a badpass. output is inversly proportional to bandwidth.
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Old 21st September 2005, 06:06 PM   #30
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Default I'm not fishing for bass. I'm fishing for BASS!

Did I mention I want BASS!!!!!! Lots of it!

200 WRMS/channel BASS that is.

I'm trying to cut fuel costs by vibrating down the road.
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