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Multi-Way Conventional loudspeakers with crossovers

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Old 8th December 2012, 12:33 PM   #181
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Originally Posted by gainphile View Post
That makes sense really. Looking at the passive xo I would reckon it's one expensive bit !


These are not mine so I could not integrate it with my subs due to the lack of xml file. So I had been listening panel only. I will figure out a way.
Who's are thay? (I think I know.)
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Old 9th December 2012, 09:58 PM   #182
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Yes, I'm sure your guess is right

I got the whole system working. The issue with me is that I got all my DSP and Amps integrated together. No problems, I just run the outputs of NaO MiniDSP to two separate amps/DSP combo. All working well.

Very well indeed and had been listening to music. Bloody great speakers they are, and I will pay attention to the high frequency. They definitely sound different. I have never heard planar tweeters and was not sure what to expect.
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Old 9th December 2012, 10:00 PM   #183
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Just a shout to all those who ordered the plans for the Note II RS. I'm caught up on sending out plans sets. Thank you all for the support and have fun with your builds.
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Old 9th December 2012, 11:49 PM   #184
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My Nao Note arrived yesterday.

Click the image to open in full size.

Perfect speakers

My review:

DIY - bang for buck!
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Old 10th December 2012, 05:35 AM   #185
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Why is there more space in between the drivers for v2 vs v1? Was it simply to keep the same baffle dimensions?
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Old 10th December 2012, 08:42 AM   #186
al2002 is offline al2002  India
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Got mine the same day I placed the order, that was 2 days ago. Thanks John.

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Originally Posted by john k... View Post
Just a shout to all those who ordered the plans for the Note II RS. I'm caught up on sending out plans sets. Thank you all for the support and have fun with your builds.
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Old 10th December 2012, 11:39 AM   #187
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Originally Posted by 454Casull View Post
Why is there more space in between the drivers for v2 vs v1? Was it simply to keep the same baffle dimensions?
The baffles are not the same, very similar but not identical. Over all they do have the same height and width, but the side panel on the new version add to the effective width and all that had to be taken into account. However, the location of the midrange in v2 is positioned on consideration of the polar response. The driver was moved down a little so there would not be too much "wrap around" over the top.

Here is a plot of the raw lower mid response with the sides panels on (black) and no sides panels (red). As you can see, with the side panels the response is flatter above 500 Hz and about has about 2dB more low frequency sensitivity.
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Old 10th December 2012, 11:53 AM   #188
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My Nao Note arrived yesterday.

Click the image to open in full size.

Perfect speakers

My review:

DIY - bang for buck!
I'm very please to see that you finished the build and thank you for the very nice review. The new version of the Note is, of course, a lot less expensive to build but is 4-way active where as the original was a biamplified hybrid design.
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Old 10th December 2012, 04:08 PM   #189
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I was ashed by a potential Note II RS builder if the SS8554 could be substituted for the Discovery 8434. I said I would take a look since I had the 8554 in house. The result was that the 8554 can be used as a direct substitution for the 8434 with no changes to the configuration files supplied with the plan set, right down to the delays.

Here are a couple of pictures of the Note II RS with the 8554 and the measurements for the 4 configurations supplied with the plans.

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Response curves offset by 5dB.

Click the image to open in full size.

So, if you have a couple of 8554 mids laying around gathering dust, build a Note II RS!
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Old 10th December 2012, 04:31 PM   #190
dewardh is offline dewardh  United States
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Originally Posted by john k... View Post
The result was that the 8554 can be used as a direct substitution for the 8434 with no changes to the configuration files supplied with the plan set, right down to the delays.
Active crossover sure does wash out driver differences, doesn't it . I suspect that you could sub a number of other drivers in there with at most only very minor changes in the configuration files. This kind of driver independence is a major advantage of (especially digital) active crossovers.
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