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"Canvas" details....Time for release!
I have been uploading pictures for a bit now, and most of the details are there in blurbs when you look at the pictures. I will be doing a full-writeup maybe this evening if I can get it done.
I think "Diamond-Port" technology is superior to silly single-ports. :rolleyes:
One note for the wiggle-lookers:
I had to reverse the tweeter polarity from the simulation to get it to sum flatter through the midrange, and this was apparent in listening only, prior Iowa. I had Dennis J. take a measurement, of which he stated the impulse response was upside down. I told him it was the way it sounded better and we just proceeded. The actual measurement will be sent my way hopefully soon, so the rest of you can see it. It has a shallow wide-range BBC centered around 2kHz, or roughly where the xover is placed. I should have had him measure it after I reversed the tweeter, but I did not do so. The only thing that brings to mind some inaccurate results is that I did not measure the 2.7mH P-core before installation. Everything else was measured and included in the sim as I had them, even though the schematic I made is spec-values, and they were also just fine in the sim. I'm just not really sure how that happened.
With the above stated, I still really like them. They are balanced, a little laid back, and have solid bass with decent extension.
Here's the nitty-gritty, and just check my Photobucket now or my blog later for more info.
Later,
Wolf
EDIT: 7/20/09
I'm an idiot- To correct what is above, they should be reverse polarity, not normal as at many DIY events have they appeared. I must say Dennis was correct, and I was not apparently listening intently enough. If you want an inherent BBC, use the normal wiring as it is not objectionable. However, the reverse polarity is how it should be wired, and has been changed in my writeups and the graphs and schematics. I am sorry for those that may have built these in error, and I apologize.
Best regards,
Wolf
PS- they *are* blue, not purple.
I think "Diamond-Port" technology is superior to silly single-ports. :rolleyes:
One note for the wiggle-lookers:
I had to reverse the tweeter polarity from the simulation to get it to sum flatter through the midrange, and this was apparent in listening only, prior Iowa. I had Dennis J. take a measurement, of which he stated the impulse response was upside down. I told him it was the way it sounded better and we just proceeded. The actual measurement will be sent my way hopefully soon, so the rest of you can see it. It has a shallow wide-range BBC centered around 2kHz, or roughly where the xover is placed. I should have had him measure it after I reversed the tweeter, but I did not do so. The only thing that brings to mind some inaccurate results is that I did not measure the 2.7mH P-core before installation. Everything else was measured and included in the sim as I had them, even though the schematic I made is spec-values, and they were also just fine in the sim. I'm just not really sure how that happened.
With the above stated, I still really like them. They are balanced, a little laid back, and have solid bass with decent extension.
Here's the nitty-gritty, and just check my Photobucket now or my blog later for more info.
Later,
Wolf
EDIT: 7/20/09
I'm an idiot- To correct what is above, they should be reverse polarity, not normal as at many DIY events have they appeared. I must say Dennis was correct, and I was not apparently listening intently enough. If you want an inherent BBC, use the normal wiring as it is not objectionable. However, the reverse polarity is how it should be wired, and has been changed in my writeups and the graphs and schematics. I am sorry for those that may have built these in error, and I apologize.
Best regards,
Wolf
PS- they *are* blue, not purple.
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