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Re: 4 PI by Andy [message #74028 is a reply to message #74027]

Wed, 03 October 2012 13:14

Wayne Parham
Messages: 18680
Registered: January 2001

Illuminati (33rd Degree)

I'm not able to see some of your pictures. Looks like they're uploaded to a private area on the internet somewhere that you can see (probably because you're logged in) but the rest of us cannot see. I suggest uploading them as an attachment here, to make sure they are visible to everyone reading.

As for the mods, I'll have to make the standard disclaimer that if you don't measure the cabinet, you can't be sure the internal standing waves aren't going to make an anomaly in the lower midrange. So if you don't have the equipment and time to do acoustic measurements, then I would suggest sticking with the plans as shown, or with a mod that you know has been tested. Don't deviate blindly, even if what you plan to do appears to be a trivial change. It's just not worth it, to risk messing up the midrange when the plans as drawn are tested and optimized. We discussed this in the thread you linked above, so I think you understand.

Now that we're through with the "standard disclaimer", notice that I said "I would suggest sticking with the plans as shown, or with a mod that you know has been tested." Nick's mod has been tested, so if you go with his cabinet, you'll be good to go. You can center the tweeter but don't change the positions or sizes of the woofer or port(s). If you change position or size, you'll need to do some testing to verify the midrange.

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[Message index]

		4 PI by Andy By: mantha3 on Wed, 03 October 2012 07:48
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 08:04
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 12:48
		Re: 4 PI by Andy By: Wayne Parham on Wed, 03 October 2012 13:14
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 15:56
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 16:22
		Re: 4 PI by Andy By: Wayne Parham on Wed, 03 October 2012 16:35
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 17:52
		Re: 4 PI by Andy By: Wayne Parham on Wed, 03 October 2012 17:55
		Re: 4 PI by Andy By: mantha3 on Wed, 03 October 2012 18:00
		Re: 4 PI by Andy By: Wayne Parham on Wed, 03 October 2012 20:05
		Re: 4 PI by Andy By: mantha3 on Thu, 04 October 2012 07:24
		Re: 4 PI by Andy By: mantha3 on Sat, 03 November 2012 09:26
		Re: 4 PI by Andy By: mantha3 on Sat, 03 November 2012 09:30
		Re: 4 PI by Andy By: zheka on Sat, 03 November 2012 14:56
		Re: 4 PI by Andy By: mantha3 on Sat, 03 November 2012 16:39
		Re: 4 PI by Andy By: Wayne Parham on Sat, 03 November 2012 20:57
		Re: 4 PI by Andy By: mantha3 on Sun, 04 November 2012 16:14
		Re: 4 PI by Andy By: mantha3 on Sat, 10 November 2012 07:49
		Re: 4 PI by Andy By: Wayne Parham on Sat, 10 November 2012 10:04
		Re: 4 PI by Andy By: mantha3 on Sat, 10 November 2012 11:04
		Re: 4 PI by Andy By: zheka on Sun, 20 January 2013 09:25
		Re: 4 PI by Andy By: Wayne Parham on Sun, 20 January 2013 13:01
		Re: 4 PI by Andy By: zheka on Sun, 20 January 2013 13:41
		Re: 4 PI by Andy By: Wayne Parham on Sun, 20 January 2013 17:11
		Re: 4 PI by Andy By: mantha3 on Thu, 18 April 2013 13:01
		Re: 4 PI by Andy By: Wayne Parham on Thu, 18 April 2013 18:36
		Re: 4 PI by Andy By: mantha3 on Thu, 18 April 2013 19:55
		Re: 4 PI by Andy By: mantha3 on Thu, 18 April 2013 19:58
		Re: 4 PI by Andy By: Wayne Parham on Fri, 19 April 2013 00:02
		Re: 4 PI by Andy By: mantha3 on Fri, 19 April 2013 11:57
		Re: 4 PI by Andy By: Wayne Parham on Fri, 19 April 2013 12:56
		Re: 4 PI by Andy By: zheka on Sat, 10 November 2012 13:55
		Re: 4 PI by Andy By: zheka on Sat, 10 November 2012 14:00
		Re: 4 PI by Andy By: Wayne Parham on Sat, 10 November 2012 22:33
		Re: 4 PI by Andy By: mantha3 on Sun, 11 November 2012 08:15
		Re: 4 PI by Andy By: Wayne Parham on Sun, 11 November 2012 10:53
		Re: 4 PI by Andy By: mantha3 on Wed, 14 November 2012 19:59
		Re: 4 PI by Andy By: mantha3 on Fri, 07 December 2012 08:28
		Re: 4 PI by Andy By: zheka on Fri, 07 December 2012 08:49
		Re: 4 PI by Andy By: zheka on Sun, 20 January 2013 14:01

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