Official JTR speaker thread - Page 717 - AVS Forum
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post #21481 of 21488 Old Yesterday, 10:47 PM
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Originally Posted by lbrown105 View Post
Little late to the discussion but for what it's worth my s8's measure 9db less sensitive as the 212's. so that also seems to be a wider spread than the specs 101-95=6.

Rob if your LG can drive the 215 that hard I can't wait to see what it does on a 30amp line with the 212's!
Hold onto your hat ...

The 212's and OS's were a phenomenal combination for HT, I was an idiot to sell them but the lure of new stuff is strong so ...

The 215RT's have lived up to my expectations and they are a perfect solution based upon my listening preferences.

HToM

"Well, la di fricken da."!

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post #21482 of 21488 Old Yesterday, 11:28 PM
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The 215RT's have lived up to my expectations and they are a perfect solution based upon my listening preferences.

Didn't the 215's actually change your listening preferences?

2 channel music is where it's at!!
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post #21483 of 21488 Old Yesterday, 11:40 PM
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Originally Posted by RMK! View Post
Those are my approx numbers too. I like the consistency of Bluray and even CD's as compared to my FLAC collection. Music playback levels on the HTPC using JRiver are all over the map.

If you can get you hands on the AIX HD Music Sampler Bluray (came with my original OPPO) it is a great disk for speaker auditioning. No heavy metal (sorry Carp ) but as a sound quality test for loudspeakers, it is one of the better ones. It also has an excellent speaker setup section. The bass sweeps are great for pointing out room resonances (rattles and buzzes).

Essentially any of the AIX disks (I have several DVD-A's) are great speaker testers.
I once met a guy with a collection of MP3s... he had a software that could level match all songs. Once that's done, whatever the playback device is, it'll be level matched, because the source is now all level matched.

I am not sure if this can be done with flac or not.
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post #21484 of 21488 Old Yesterday, 11:46 PM
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Yeah, it wouldn't surprise me if the 212's are actually 104.
Or the 215s actually 90db
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post #21485 of 21488 Old Yesterday, 11:55 PM
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Originally Posted by coolgeek View Post
Or the 215s actually 90db

Possibly, but I don't think so. If the 212's really are 101 then every speaker I've compared to them is WAY below the rated sensitivity including Danley which would really surprise me.

You could be right though.
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post #21486 of 21488 Old Yesterday, 11:58 PM
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Originally Posted by carp View Post
Possibly, but I don't think so. If the 212's really are 101 then every speaker I've compared to them is WAY below the rated sensitivity including Danley which would really surprise me.

You could be right though.

That would be awesome if we suddenly discovered that every speaker brand out there lied about their sensitivity... haha

And the 212 suddenly becomes the benchmark!
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post #21487 of 21488 Unread Today, 04:56 AM
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Keep in mind when comparing sensitivity ratings, especially across different manufacturers, different methods are used to develop a figure.

For example:

JTR uses 2.0 Volts (equivalent of one watt into a four ohm load) in free space - it doesn't list a distance but I'm "assuming" this is one meter distance.

Danley Sound Labs typically uses 2.83 volts (this is two watts into a four ohm load) at one meter in free space.

JBL also uses a similar spec, but often doesn't note if it's free space, half space, ground plane, etc. As an example: Half space would be some place with typical boundary gain, like mounting against a wall, etc.

In addition, some manufacturers simply "Calculate" this spec based on models, others are actually measured.

It's easy to play games there.

Last edited by Gorilla83; Today at 05:17 AM.
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post #21488 of 21488 Unread Today, 05:16 AM
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^^ on a related note Gorilla's post did make me remember one thing, the S8's are running at 8ohm so 3dB difference right there. So when I sent a -12dB signal through my system the Sunfire was running 8 ohm on the S8's and 4 ohm on the 212 so that would bring the true spread in my check back to 6dB. Sorry guys I may have been off on my first post about this and without specifically measuring the input wattage it is probably a little "off".

Pre-Pro: Emotiva UMC-1, DSP: Mini DSP 2x4 balanced
Amplifier: Sunfire TGA7400, Lab Gruppen FP10000Q
Speakers: JTR Noesis 212HT (LCR), JTR Slant 8's (surrounds), 3 Orbit Shifter LFU's
Sources: PS3, HTPC, Dish Network
Projector: Epson 8350
Screen: Seymour XD AT 138" diagonal 16:9
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