Official SVS SB-13 Ultra Thread - Page 11 - AVS Forum
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post #301 of 324 Old 11-05-2014, 07:04 PM
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Yeah! My two SB13 Ultras arrived today. Unpacked and hooked up. Manual setup tonight and Audyssey this weekend. I'll let you know how they work out.

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post #302 of 324 Old 11-06-2014, 08:40 AM
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How hot do you guys usually run your SB-13 ultra on? Mine is currently running at:

Sub amp: -8db
Audyssey software: put it at -8.5db
AVR: change it to -4db therefore, I ran it -4.5db hotter than it should be.

I'm thinking of running it hotter, since I wanted it to be louder when watching movie, since my speakers seen to take over when it is only set to 75db for all speakers or do you think PB-12 Plus will do a better job?
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post #303 of 324 Old 11-07-2014, 12:34 AM
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Quote:
Originally Posted by supert View Post
How hot do you guys usually run your SB-13 ultra on? Mine is currently running at:

Sub amp: -8db
Audyssey software: put it at -8.5db
AVR: change it to -4db therefore, I ran it -4.5db hotter than it should be.

I'm thinking of running it hotter, since I wanted it to be louder when watching movie, since my speakers seen to take over when it is only set to 75db for all speakers or do you think PB-12 Plus will do a better job?
Hi. I have mine at -18 on sub and audyssey sets it at -7,5. I put it at -3,5 but i also set dyn EQ ref. level offset at -10 db.
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post #304 of 324 Old 11-07-2014, 02:30 AM
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Quote:
Originally Posted by supert View Post
How hot do you guys usually run your SB-13 ultra on? Mine is currently running at:

Sub amp: -8db
Audyssey software: put it at -8.5db
AVR: change it to -4db therefore, I ran it -4.5db hotter than it should be.

I'm thinking of running it hotter, since I wanted it to be louder when watching movie, since my speakers seen to take over when it is only set to 75db for all speakers or do you think PB-12 Plus will do a better job?
I run my Ultra at 80-81 dbs and rest of speakers at 75dbs.

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post #305 of 324 Old 11-07-2014, 06:43 AM
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Originally Posted by cchunter View Post
I run my Ultra at 80-81 dbs and rest of speakers at 75dbs.
Can you tell me how you are able to measure the sub to 80-81db? The avr test tone only show the sub at 56-58db I think it is using pink noise.

Thanks.
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post #306 of 324 Old 11-07-2014, 11:26 AM
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Quote:
Originally Posted by supert View Post
Can you tell me how you are able to measure the sub to 80-81db? The avr test tone only show the sub at 56-58db I think it is using pink noise.

Thanks.
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post #307 of 324 Old 11-07-2014, 12:06 PM
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SPL meter
You mind telling me what is your avr and ur sub settings? Thanks
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post #308 of 324 Old 11-07-2014, 01:37 PM
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You mind telling me what is your avr and ur sub settings? Thanks
Denon 4520. I have been making changes to my sub gain but have decided that -15 on sub and audyssey calibrates it to -7. I then turn sub volume up on AVR to -2. Now I use to run the sub gain at -10 and it then pegged my audyssey at -12. Now it just seems right to lower the sub gain so I always know where home is and then just adjust the gain in the AVR to my liking. Like I said all in all I'm running 5-6 dbs hot so 80-81 dbs for sub.

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post #309 of 324 Old 11-11-2014, 08:34 AM
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I've had my new SB13 Ultras (2 of them) for a week now. I am very impressed with them. They are very "musical" to me and blend in well with the rest of my system. My music taste is primarily classical and jazz/blues. I generally play multi channel hi-rez music. I've truly enjoyed listening to crisp bass, not muddy and not boomy.

My initial Audyssey set up was good. I am going to try and use REW to get the bass closer to perfect and then rerun Audyssey. My layout has limits. I've located the subs under my Polk LSi9s. This meets the WAF, although I do have some limited flexibility in placement. My system is located in a huge room. The actual listening area is 16 feet long by 15 feet wide. But, the length of the room continue an additional 14 feet with very high vaulted ceilings. There is no wall on the right side which continues another 20 feet (dining room and kitchen). The entire space is nicely filled with great sound, including the subs, of course. Inside the listening area, I am very happy with how the subs blend in.

Once I have time to run REW and rerun Audyssey, I'll give everyone my setup specs. For now, I'm just enjoying the new sound.

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post #310 of 324 Old 11-11-2014, 07:20 PM
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Originally Posted by bear123 View Post
You would get double the output on movies below 30 Hz, as your single sub is heavily compressing the low frequency signal if you are watching movies at -10. Almost everyone underestimates how much capability is needed to accurately play back low frequency without compression or limiting taking place. That is why when people upgrade from one sub to two, or two sealed subs to two ported subs, or two ported subs to two PB13 Ultras, or from PB13 Ultras to Captivator 2400's, the upgrade is drastic and very noticeable. For example:

Reference level (0 MV) requires a sub to be able to produce peak SPL of 115 dB at the MLP. Since you only listen at -10, that lowers the output requirement to 105 dB peaks. However, most people run their subs 5 db or so hot. This would increase the peak SPL from your sub to be 110 dB. Now take a look at how much the SB13 Ultra can produce at 16, 20, 25, and 31.5 Hz at 2m. You are lucky if you are not getting a decent amount of compression/limiting as high as 31.5 Hz. To make matters worse, you may be further than 2m from your sub, which will lower the SPL even further. Last, the sub may be required to produce up to an additional 6 dB of output due to bass redirected from the other 5 speakers in a surround setup. I can't log on to Data-bass at the moment, but assuming the SB13 Ultra produces 98 dB of output at 20 Hz, dual subs would produce, at best, 104 dB. You would still need two more to produce the 110 db level required by a -10 MV with subs calibrated 5 dB hot. And again, this does not include the additional 6 dB from bass redirected from the other 5 channels, or the drop in SPL due to distance to the MLP.

Of course, you may get some gain from corner loading, room gain, etc, but not enough to offset the shortfall in output. And if you are barely achieving the 110 dB at 20 Hz that four SB13 Ultras can produce, you still are not doing it without a lot of compression. So for music, dual subs may not make a huge difference, other than a potentially drastic improvement in sound quality do to a smoother FR, but for movies, even four SB13 Ultras would probably not give you true, 100% playback on movies with no compression or limiting in the lower frequencies.

Great explanation! Real easy to understand. Data-bass rates the SB13-Ultra at 96.5 db for 20 hz. The SB13 is a very good sealed sub but if someone wants 110 db at 20 hz then they can look to the larger PB-13 Ultra that is rated at 109.2 at 20 hz or like you said buy 4 SB13 Ultras.
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post #311 of 324 Old 11-11-2014, 08:25 PM
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Quote:
Originally Posted by Frank D View Post
Great explanation! Real easy to understand. Data-bass rates the SB13-Ultra at 96.5 db for 20 hz. The SB13 is a very good sealed sub but if someone wants 110 db at 20 hz then they can look to the larger PB-13 Ultra that is rated at 109.2 at 20 hz or like you said buy 4 SB13 Ultras.
You're not taking in account room gain and EQ. Those measurements are ground plane not in room. I got 105db at 20hz with SB13 after EQ. This is with the MV at only at -20.

I don't get the obsession with having to follow the rule for reference in our rooms. Anything over 100db is loud enough. I don't like the way sealed subs are treated on this forum. As if they're useless for anything but music. Never realizing we all have different size rooms and output varies especially after EQ. Sealed subs are just as good for movies as ported.

But as I already mentioned, maby I'm not a bass head after all. I just want it sound accurate. Don't really care for 120db.

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post #312 of 324 Old 11-12-2014, 08:04 PM
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Anyone having problems loading the data-bass.com website? Its been offline all day today for me at least...

How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #313 of 324 Old 11-12-2014, 09:53 PM
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Not a svs sub owner but yes,safari says can't find server data-bass web site.

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post #314 of 324 Old 11-12-2014, 11:03 PM
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Quote:
Originally Posted by saprano View Post
You're not taking in account room gain and EQ. Those measurements are ground plane not in room. I got 105db at 20hz with SB13 after EQ. This is with the MV at only at -20.

I don't get the obsession with having to follow the rule for reference in our rooms. Anything over 100db is loud enough. I don't like the way sealed subs are treated on this forum. As if they're useless for anything but music. Never realizing we all have different size rooms and output varies especially after EQ. Sealed subs are just as good for movies as ported.

But as I already mentioned, maby I'm not a bass head after all. I just want it sound accurate. Don't really care for 120db.

I admit that I am no expert but do understand that you should take room gain into account and each room will be different. Smaller rooms have more gain. However you also need to factor in that at lower frequencies say under 100Hz our hearing is less sensitive. Hence at 30 Hz we need more loudness (I believe about 25 more db assuming 1000 hz is at 70 db - similarly 35 more db at 20hz) as compared to 1000hz to get the same/similar loudness. However one can always experiment and set their subwoofer bass level to their liking.
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post #315 of 324 Old 11-12-2014, 11:21 PM
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I miss the days when SVS made the 4 12's. Their ULTIMATE sub was touted as the best almost ever made from what I recall but it was uber expensive. I think it was like $4k or more...almost 5k and it beat pretty much every sub out there. I wonder why they stopped making those. Anyone recall the name?


I can't find anything about it.
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post #316 of 324 Old 11-12-2014, 11:28 PM
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I miss the days when SVS made the 4 12's. Their ULTIMATE sub was touted as the best almost ever made from what I recall but it was uber expensive. I think it was like $4k or more...almost 5k and it beat pretty much every sub out there. I wonder why they stopped making those. Anyone recall the name?


I can't find anything about it.
SVS B4-Plus

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post #317 of 324 Old 11-13-2014, 12:29 AM
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Thanks. I remember thinking that must be one of the best subs on the market at the time.


I wonder how it holds up now compared to the PB-13 or against 2 of those. Or even better yet how it compares to other DIY projects around here like the F-20 and stuff.
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post #318 of 324 Old 11-14-2014, 09:06 PM
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Quote:
Originally Posted by dmusoke View Post
Anyone having problems loading the data-bass.com website? Its been offline all day today for me at least...
Quote:
Originally Posted by PcGeek626 View Post
Not a svs sub owner but yes,safari says can't find server data-bass web site.




Its up now ... http://www.data-bass.com/data?page=s...d=107&mset=119

How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #319 of 324 Old 11-15-2014, 03:04 PM
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Quote:
Originally Posted by saprano View Post
You're not taking in account room gain and EQ. Those measurements are ground plane not in room. I got 105db at 20hz with SB13 after EQ. This is with the MV at only at -20.

I don't get the obsession with having to follow the rule for reference in our rooms. Anything over 100db is loud enough. I don't like the way sealed subs are treated on this forum. As if they're useless for anything but music. Never realizing we all have different size rooms and output varies especially after EQ. Sealed subs are just as good for movies as ported.

But as I already mentioned, maby I'm not a bass head after all. I just want it sound accurate. Don't really care for 120db.
My little SB12 NSD sure rocks my sealed bedroom with movies.

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post #320 of 324 Old 11-16-2014, 09:24 AM
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Hi, Cross posting my Audyssey results from the Audyssey thread:

Finally success!

My two subs (SVS SB13 Ultra) are new to me. So is my Marantz AV7702 (w/ Audyssey XT32). After several calibrations, I ultimately had to lower the subs to around 76 db (using the Audyssey mic) to avoid a -12 trim.

... My left sub is in a corner (12 inches forward of the rear wall and 9 inches from the left wall). I set it at -16 db (shown on the sub's AMP volume control) to achieve about 76 db using Audyssey. Audyssey set the trim at -9.5.

... My right sub is also 12 inches from the rear wall but there is no wall on the right side. I set it at -13 db on the sub's AMP to achieve 76 db in Audyssey. Audyssey set the trim to -10.5.

Now I feel safe in boosting the trim in the pre-amp without creating distortion or other sonic issues. I still plan on running REW once I get it to work properly on my computer. Why am I reporting this here? I guess I never expected to have to lower the sub's volume all the way to the recommended 75 db level to avoid max'd out trim. I was actually expecting the opposite given the huge room and vaulted ceilings my home theater is located in.

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post #321 of 324 Old 11-16-2014, 12:55 PM - Thread Starter
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well its been a year and a half and these dual sb13 ultras are unbelieveable. 15x23 living rm and slamming. Upgraded to Klipsch, way better then polk imo.
rf82ii
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Klipsch are great speakers...thinking of rf7iis
idk if my room is big enough though
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post #322 of 324 Old 11-29-2014, 06:26 PM
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Has anyone made cloth grills for their SB13 Ultras?
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post #323 of 324 Old 12-14-2014, 01:16 PM
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Hello, i´m from Portugal and i want to make a question about what should be the best subwoofer to my living room. I have a living room with 25 square meters and i have one Yamaha 771 with speakers B&W 684 subwoofer B&W608 and B&W DM303. I would like to order a subwoofer but I don't know what is the best - the SP2000 or the SB13 Ultra or other. I would like to know what you recomend because normally I watch more movies than music (concerts).

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Last edited by 1969luis; 12-14-2014 at 02:28 PM.
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post #324 of 324 Unread Today, 09:11 PM
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Listening to these subs for several weeks now. Fantastic. Very musical as I primarily listen to music. Every day I am impressed. If you listen to Jazz, Blues, Classical, these are the subs to get. They're no slouch with movies either.

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