SVS PB1000 or Rythmik LV12R..narrowed it down to these two candidates. Read more: http://www.hometheatershack.com/forums/home-audio-subwoofers/68125-svs-pb1000-rythmik-lv12r-narrowed-down-these-two-candidates.html#ixzz2WqxJyNV7 - Page 3 - AVS Forum
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post #61 of 73 Old 06-24-2013, 10:25 AM
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Originally Posted by JimWilson View Post

Why do you feel those reviews aren't useful to make a comparison?

I said the test results, not the reviews. The subjective matter of your reviews might be useful to some, but measurements give me a better sense of their performance.
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post #62 of 73 Old 09-20-2013, 04:35 PM
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So -- all of this jibber jabber aside, I'm about to decide between the PB1000 and the LV12R. After having spent a few months with what I assume is the LV12R can you comment? Your room dimensions are very similar to mine.
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post #63 of 73 Old 09-20-2013, 08:03 PM
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If you haven't seen 3db's review of the Rythmik LV12R.
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post #64 of 73 Old 09-20-2013, 08:33 PM
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I think its safe to say these two subs are the best in their price/size class. If you can afford the extra cost of the rythmik and are ok with the bigger size, go for it. If not, get the svs

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post #65 of 73 Old 09-21-2013, 06:48 AM
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We have a huge spreadsheet of CEA-2010 data on all SVS subs and most of the competition. It starts with dB Peak values (as generated by the software) and then we convert to dB RMS values (for an apples to apples comparison to Josh Ricci and the legacy data from AVTalk and Ilkka).

I made an error and looked at the 20 Hz dB Peak table for the PB-1000 in that above quote of me as posted by one of our customers. The rest of the quote - which essentially converts from 2M GP to indoors with boundary reinforcement and room gain - stands as valid. Just to clarify - below are our CEA-2010 2M GP dB RMS values for the PB-1000:

16 Hz 91.9
20 Hz 99.8 (previously misquoted as 102.8 which is the dB Peak value)
25 Hz 102.9
31.5 Hz 104.0
40 Hz 107.4

The above posters are correct - the PB12-NSD has on average about 3 dB more headroom than the PB-1000 in the 16-32 Hz octave. In the 40-80 Hz octave they are closer to parity.

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post #66 of 73 Old 09-21-2013, 06:57 AM
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Thanks for clarifying, Ed.

Once again, I am sorry to take a sledgehammer to so small and fragile a nut. -- Richard Dawkins, The Greatest Show On Earth
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post #67 of 73 Old 09-21-2013, 07:23 AM
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Wow Ed. That's impressive for the little pb1000. I can't believe how much output this little guy has.

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post #68 of 73 Old 09-21-2013, 07:50 AM
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Quote:
Originally Posted by Ed Mullen View Post

We have a huge spreadsheet of CEA-2010 data on all SVS subs and most of the competition. It starts with dB Peak values (as generated by the software) and then we convert to dB RMS values (for an apples to apples comparison to Josh Ricci and the legacy data from AVTalk and Ilkka).

I made an error and looked at the 20 Hz dB Peak table for the PB-1000 in that above quote of me as posted by one of our customers. The rest of the quote - which essentially converts from 2M GP to indoors with boundary reinforcement and room gain - stands as valid. Just to clarify - below are our CEA-2010 2M GP dB RMS values for the PB-1000:

16 Hz 91.9
20 Hz 99.8 (previously misquoted as 102.8 which is the dB Peak value)
25 Hz 102.9
31.5 Hz 104.0
40 Hz 107.4

The above posters are correct - the PB12-NSD has on average about 3 dB more headroom than the PB-1000 in the 16-32 Hz octave. In the 40-80 Hz octave they are closer to parity.
Hi Ed, is this spreadsheet available on your website?
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post #69 of 73 Old 09-21-2013, 08:01 AM
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Originally Posted by dominguez1 View Post

Hi Ed, is this spreadsheet available on your website?

No - it's for internal SVS R&D use. With that said, Josh already has the CEA-2010 data on several SVS subs.

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post #70 of 73 Old 09-21-2013, 08:05 AM
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Originally Posted by Ed Mullen View Post


No - it's for internal SVS R&D use. With that said, Josh already has the CEA-2010 data on several SVS subs.

 

Thanks Ed, understood. Just so I'm clear, are your measurements of your SVS subs available in the public domain? I see you posted the PB1000...didn't know if others were available.

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post #71 of 73 Old 09-21-2013, 08:17 AM
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Originally Posted by dominguez1 View Post

Thanks Ed, understood. Just so I'm clear, are your measurements of your SVS subs available in the public domain? I see you posted the PB1000...didn't know if others were available.

When the situation and circumstances dictate (like this thread), I'll provide CEA-2010 data on various SVS models. And I've never been shy about discussing the max output differences between SVS models. But the entire spreadsheet (which also contains the data for many competitive brands) is not (and won't become) publicly available.
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post #72 of 73 Old 09-21-2013, 08:35 AM
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Quote:
Originally Posted by Ed Mullen View Post


When the situation and circumstances dictate (like this thread), I'll provide CEA-2010 data on various SVS models. And I've never been shy about discussing the max output differences between SVS models. But the entire spreadsheet (which also contains the data for many competitive brands) is not (and won't become) publicly available.

 

Makes sense...I can certainly respect that.

 

Just to give you some context on why I ask, I've created a thread Your Home Theater ULF Score not to compare subs, but to compare HT Room's (from a ULF perspective). I use the CEA-2010 data from Josh as well as try to estimate other subs not tested by Josh. Again, the purpose is not to compare sub measurements, but HT Rooms.

 

I'll add the PB1000 to the list. Thanks!

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post #73 of 73 Old 09-21-2013, 08:45 AM
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Originally Posted by dominguez1 View Post

Makes sense...I can certainly respect that.

Just to give you some context on why I ask, I've created a thread Your Home Theater ULF Score not to compare subs, but to compare HT Room's (from a ULF perspective). I use the CEA-2010 data from Josh as well as try to estimate other subs not tested by Josh. Again, the purpose is not to compare sub measurements, but HT Rooms.

I'll add the PB1000 to the list. Thanks!

Sure - no sweat. As Josh has correctly pointed out in other threads, every room has a unique modal pattern at the measurement location which can sometimes have a significant impact on the in-room CEA-2010 data. I suspect one of the reasons Josh even bothers to measure CEA-2010 data in-room is to educate readers on the major influence the room can have on subwoofer performance, and it validates and reinforces the reason we all measure subwoofers outdoors at 2M GP. It's a consistent test environment free of boundary effects and standing waves, which allows a true comparison of various subwoofers in terms of FR, max output, distortion levels and harmonic signature, phase response, etc.

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