Introducing the Luna Mini Monitor!

[SunByrne]

Try here: http://forum.ascendacoustics.com/sho...t+measurements

See links in post #2

Awesome, thanks!

These are a great start—super interesting. Still, though, as noted on that page these links don't give actual specs, and the plots don't include spectral decay. I'd love to see all that if it's available somewhere.

[davef]

Awesome, thanks!

These are a great start—super interesting. Still, though, as noted on that page these links don't give actual specs, and the plots don't include spectral decay. I'd love to see all that if it's available somewhere.

Specs between the Sierra-1 and Sierra-1 NrT are very much identical (though the NrT tweeters have a bit more HF extension). I don't have a CSD measurement readily available, when our new site is ready and my time frees up, I'll take one and post it.

[SunByrne]

Specs between the Sierra-1 and Sierra-1 NrT are very much identical (though the NrT tweeters have a bit more HF extension).

Not a surprise there (on the extension).

This is a great example of how there's so much more that matters than just the specs, because the two speakers do not sound the same to me—similar, yes; same, no—even if they spec pretty much the same.

I don't have a CSD measurement readily available, when are new site is ready and my time frees up, I'll take one and post it.

No rush. You have many, many better things to do than satisfy my idle curiosity. (OTOH, it is sort of unlike you to have a speaker for sale that doesn't have all the associated graphs. And I love the graphs. I'm now always suspicious when I go to look at the web site for other folks and there aren't a ton of graphs. Makes me wonder what they're hiding, you know?)

[davef]

Not a surprise there (on the extension).

This is a great example of how there's so much more that matters than just the specs, because the two speakers do not sound the same to me—similar, yes; same, no—even if they spec pretty much the same.

The technical differences in the NrT dome compared to the stock Sierra-1 tweeter are considerable. the NrT dome has lower moving mass and is a fully underhung design and combining that with a very powerful neodymium ring magnet, enables extremely fast transients for a dome tweeter. In addition, the neo ring magnet dramatically reduces back-wave reflections because there is basically no reflective surface directly behind the dome, only a large chamber and damping material. A typical magnet used in a tweeter is a slug, and this causes reflections as the sound produced by the dome bounces off this surface and back out through the dome itself and not in proper phase.

The neo ring magnet used in the NrT looks much like a doughnut, and there are many advantages to this shape - including a more focused magnetic field resulting in higher flux density in the gap (where it is needed) and less flux leakage.

The NrT dome is both cleaner sounding with faster transients and the crossover takes full advantage of this with a shallower high pass slope.

No rush. You have many, many better things to do than satisfy my idle curiosity. (OTOH, it is sort of unlike you to have a speaker for sale that doesn't have all the associated graphs. And I love the graphs. I'm now always suspicious when I go to look at the web site for other folks and there aren't a ton of graphs. Makes me wonder what they're hiding, you know?)

I agree, but as good as the Sierra-1 NrT is, with the release of the Sierra-2 - in some ways it made the Sierra-1 NrT obsolete. That was not our intention of course, but the S2 is a better overall speaker.

[SunByrne]

The technical differences in the NrT dome compared to the stock Sierra-1 tweeter are considerable.

Exactly my point! For example if you were to reproduce this page:

http://ascendacoustics.com/pages/pro...srm1specs.html

for the NrT version, there would be very little difference. But behind those similar specs, there's actually a substantial difference between the base S1 and the S1 NrT. Specs just don't tell the full story.

I have come to believe that graphs, particularly off-axis FR and CSD, though still incomplete, give a much better sense of how a speaker really performs.

as good as the Sierra-1 NrT is, with the release of the Sierra-2 - in some ways it made the Sierra-1 NrT obsolete. That was not our intention of course, but the S2 is a better overall speaker.

Yes, I would imagine you don't sell a lot of NrTs anymore, even though they are exactly halfway between the S1 and S2 price points. Personally I think the NrT is brilliant as it exactly addresses what I feel is the one minor weakness of the S1, but with the S2 in the mix that's not as compelling.

I'm dying to get the S2s, so I'll eventually get around to upgrading my NrTs to S2s, and then I'll take my NrT bits and upgrade my office base S1s to NrTs. And then... I'll have an extra S1 tweeter and crossover set. Not sure what I'll do with those.

Anyway, seriously, I'll stop threadjacking now. Lunas, this is supposed to be about Lunas...

[enricoclaudio]

In a future upgrade I want to use two pairs of Lunas as Atmos speakers. The only way I can do Atmos is with add-on speakers. So Dave, would doing something like this work as Atmos add-on speaker?

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BTW, I can increase the angle if necessary.

[Roen]

In a future upgrade I want to use two pairs of Lunas as Atmos speakers. The only way I can do Atmos is with add-on speakers. So Dave, would doing something like this work as Atmos add-on speaker?

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BTW, I can increase the angle if necessary.

I was watching the Dolby Atmos demo BD and the Atmos engineer at Pioneer or KEF was talking about guidelines for Directionality and Diffusion. As long as the Luna is within those guidelines for up firing speakers, I see no reason why you couldn't.

[racrawford65]

Enrico -
What about front / rear height speakers for Atmos?
R

[Roen]

In a future upgrade I want to use two pairs of Lunas as Atmos speakers. The only way I can do Atmos is with add-on speakers. So Dave, would doing something like this work as Atmos add-on speaker?

IMG_0086.JPG

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BTW, I can increase the angle if necessary.

How did you like this upfiring setup?