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post #30841 of 31357 Old 03-31-2019, 12:45 PM
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I have had the SB1000, 2000 and now a 3000. Each was a good jump up from the other in my 12x13 sealed bedroom. I now have a SB2000 and 3000 up front and they shake the room. The rocket lift off in the movie Interstellar blows the house down.
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post #30842 of 31357 Old 04-01-2019, 03:22 AM
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Originally Posted by Droidboi View Post
Thank you so much man. I am pretty dead set on the sb 2000's at this Point. The pb 2000 are also a little big for my room so I wouldn't have many places to put them. I also suspect I will get great authority down to the 10 hz frequencys.

I'm in the same boat. Is it worth waiting for a sale like Memorial Day???
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post #30843 of 31357 Old 04-01-2019, 11:09 AM
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I'm in the same boat. Is it worth waiting for a sale like Memorial Day???
I don't know that's up to you. I will get mine withing a month or so. The price recently Went up a 100 bucks here in Sweden. Will wait to see if it goes down or up. Want to save for some demo blurays lol. Will pick up Aquaman on 4k as soon as i get these
.
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post #30844 of 31357 Old 04-01-2019, 06:52 PM
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Originally Posted by Droidboi View Post
I don't know that's up to you. I will get mine withing a month or so. The price recently Went up a 100 bucks here in Sweden. Will wait to see if it goes down or up. Want to save for some demo blurays lol. Will pick up Aquaman on 4k as soon as i get these
.

More likely due to the money exchange, it happen often here too in Canada.
Also looking forward to watch this movie on 4K


Ray
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post #30845 of 31357 Old 04-02-2019, 11:04 AM
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This is very good to hear! I’ve recently had my own fair share of difficulties dealing with the same Canadian SVS dealer/distributor...on a non SVS purchase I should state. Anyway, it left me feeling VERY worried about any possible warranty issues on my dual PB13 Ultra’s also purchased from the same dealer in the last 6 months. I’m so relieved to hear that Ed and SVS USA are there for us Canadians as well!

It’s truly a shame to see such poor customer service from a Canadian dealer/distributor soil the name of an otherwise stellar company like SVS. I should also state that pre sales service is excellent form this Canadian company, but you had better pray that you don’t have any after sales issues pop up.

Buyer beware!
Summit or EFL?
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post #30846 of 31357 Old 04-02-2019, 11:38 AM
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Prime Pinnacle

https://www.svsound.com/products/prime-pinnacle

Looks great and a nice fit in their speaker line, both physically and in price
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post #30847 of 31357 Old 04-02-2019, 02:02 PM
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Originally Posted by abba1 View Post
I'm in the same boat. Is it worth waiting for a sale like Memorial Day???
SVS's outlet sales are always worth waiting for IMO if you're set on getting an SVS sub and don't mind a few scratches.
The biggest value is usually in their higher end subs (the PB16 is discounted $600...).

You'll probably save ~$100-150 on the sb2000 which may be worth it if you have the patience.

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post #30848 of 31357 Old 04-02-2019, 02:06 PM
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Originally Posted by Matt2026 View Post
https://www.svsound.com/products/prime-pinnacle

Looks great and a nice fit in their speaker line, both physically and in price
Interesting, only $100 cheaper than the ultra tower in Piano Gloss. The ultra towers were miserable to place and gave me a ton of phase related nightmares. Wish these were out when I decided to purchase.
To this day I don't think I'm getting the most out of them...

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post #30849 of 31357 Old 04-02-2019, 02:48 PM
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Originally Posted by DarkEnigma View Post
Interesting, only $100 cheaper than the ultra tower in Piano Gloss. The ultra towers were miserable to place and gave me a ton of phase related nightmares. Wish these were out when I decided to purchase.
To this day I don't think I'm getting the most out of them...
Yeah, what do you do if you're sitting in a null around the woofer/sub frequencies

Sure can't locate the speakers at many other locations and have a solid front stage.
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post #30850 of 31357 Old 04-02-2019, 02:53 PM
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Originally Posted by Matt2026 View Post
https://www.svsound.com/products/prime-pinnacle

Looks great and a nice fit in their speaker line, both physically and in price
I see you also got the e-mail

Quote:
Originally Posted by DarkEnigma View Post
Interesting, only $100 cheaper than the ultra tower in Piano Gloss. The ultra towers were miserable to place and gave me a ton of phase related nightmares. Wish these were out when I decided to purchase.
To this day I don't think I'm getting the most out of them...
Just taking a guess, this new series added an extra woofer in the front. And do without the side one of the Ultra, been bigger and cost more.
That said, I like this new look of this new speakers.
I'm sure we will soon see some review, and hopefully this new design have good ones.


Ray
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post #30851 of 31357 Old 04-02-2019, 03:43 PM
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summit or efl?
efl

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post #30852 of 31357 Old 04-02-2019, 04:08 PM
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If you are in Canada and want to buy SVS,only use summit hifi.The service is exceptional and the owner Aamir will take care of you, if problems arise.I had 3 bad SB16 ultras, 2 with bad amps, one a bad driver.They sent me a fourth brand new for my troubles which now finally is working exceptionally well.
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post #30853 of 31357 Old 04-03-2019, 08:59 AM
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With any luck I'll be adding a second SB-3000 in my 11x15 movie room today. Moved from dual Elac 3010s a few weeks ago. Currently running the SB-3000 up front and a Elac 3010 rear (opposing diagonal corners).
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post #30854 of 31357 Old 04-04-2019, 05:43 AM
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If you are in Canada and want to buy SVS,only use summit hifi.The service is exceptional and the owner Aamir will take care of you, if problems arise.I had 3 bad SB16 ultras, 2 with bad amps, one a bad driver.They sent me a fourth brand new for my troubles which now finally is working exceptionally well.
Totally agree-Summit Hifi was awesome and Aamir goes over and above.
Loving my 2 PC 4000s from him and the wonderful customer service
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post #30855 of 31357 Old 04-04-2019, 02:13 PM
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efl
Thanks! That's good to know.

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post #30856 of 31357 Old 04-06-2019, 08:13 PM
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Hey guys, pretty much a newbie here. Just swapped out my speakers to the newer Klipsch line RP8000F towers, 504C centre and 4 RP600M for surrounds.

I had initially ordered 2 PB2000 subs from Aamir at Summit Hifi. I had some second thoughts and decided to switch my order to a single SVS SB16 Ultra. This is pretty much the top of my budget. Just wondering about thoughts on the single for now and maybe a year or two down the line adding a second SB16 Ultra?

Room is about 18×22 with carpeted floors and a slightly vaulted ceiling and use will be 80% home theater and 20% music.

Thanks in advance.
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post #30857 of 31357 Old 04-07-2019, 06:21 AM
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Originally Posted by Tyler Giesbrecht View Post
Hey guys, pretty much a newbie here. Just swapped out my speakers to the newer Klipsch line RP8000F towers, 504C centre and 4 RP600M for surrounds.

I had initially ordered 2 PB2000 subs from Aamir at Summit Hifi. I had some second thoughts and decided to switch my order to a single SVS SB16 Ultra. This is pretty much the top of my budget. Just wondering about thoughts on the single for now and maybe a year or two down the line adding a second SB16 Ultra?

Room is about 18×22 with carpeted floors and a slightly vaulted ceiling and use will be 80% home theater and 20% music.

Thanks in advance.

Hi Tyler,

Your room size wasn't readable in your post, but I get the impression that it is a large room, and the vaulted ceiling will increase the total volume of the space. That will affect the amount of room gain that you get. Room gain amplifies lower frequencies, but room gain is less helpful in doing that in large spaces. Where room gain is less helpful, subwoofers may have to be able to produce more low-frequency SPL on their own, if we want to have significant low-bass.

Ported subwoofers produce much more low-frequency SPL (sound pressure level) than equivalent sealed subs do, and movies require much more low-frequency bass than music does. Since I believe you are in a large room (although I can't tell how large from what you wrote) and since your use is 80/20 movies/TV to music, ported subs are much more likely to be what you are looking for.

If I were you, I would consider a PB3000, or a PB4000 (or a PB16) in preference to an SB16. In one sense, going to the top of the SVS model line makes some sense, but it needs to be the right type of subwoofer for your space and for your primary listening use. I believe that you would actually have gotten much better low-frequency capabilities, and probably a better overall frequency response, from dual ported PB2000's, than you would from a single sealed SB16.

If you are going to buy a single sub now, and add a second sub later, I would recommend adding an identical PB3000, or PB4000, or PB16, depending on which model you choose to start with. The PB3000, especially, would represent a nice jump in quality over the PB2000. It punches well above its weight, and I am linking a very good review of that sub by @Jim Wilson .

https://www.avsforum.com/forum/113-s...00-review.html

You mentioned being a bit of a newbie, and everyone posting on AVS started-out that way at some point. The important thing is to understand some basic concepts, such as the difference between sealed and ported subs. The Guide, linked in my signature, will help you with that. I am providing a direct link to a section of the Guide which explains the difference between sealed and ported subs, and which provides some subwoofer buying tips. Some of it may seem a little technical at first, but it is written to be as readable as I can make it, while still providing an appropriate level of detail. I hope that this post is helpful to you!

https://www.avsforum.com/forum/113-s...nces.html#VIII

Regards,
Mike
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GUIDE TO SUBWOOFER CALIBRATION AND BASS PREFERENCES

* The Guide linked above is a comprehensive guide to Audio & HT systems, including:
Speaker placements & Room treatments; HT calibration & Room EQ; Room gain; Bass
Preferences; Subwoofer Buyer's Guide: Sealed/ported; ID subs; Subwoofer placement.
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post #30858 of 31357 Old 04-07-2019, 06:39 AM
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Thanks Mike! Room size is actually 19 by 15 after looking at our blueprints with a subtle vaulted ceiling.
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post #30859 of 31357 Old 04-07-2019, 03:06 PM
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Quote:
Originally Posted by Droidboi View Post
Thank you so much man. I am pretty dead set on the sb 2000's at this Point. The pb 2000 are also a little big for my room so I wouldn't have many places to put them. I also suspect I will get great authority down to the 10 hz frequencys.
Just want to add to what Mike said about content. Only a handful of movies out there have any significant LFE below 30 Hz, because as Mike pointed out movie theaters can't reproduce it and neither can most home theaters. I do get good room gain with my SB2000's (my mike is only cal'd to 10Hz, but REW shows flat down to 5), but not all that much "rumble". It's there in the few movies that have it, but tops out below 100 dB, which isn't all that much in terms of shaking a room. Not sure you will be satisfied with the upgrade, as you may be looking for more than the SB2000's can provide. Keep in mind to really shake a room down at that level, requires ported subs or many KW of power (beyond even an SB16). Or a chair shaker, like someone else suggested.

Since your room is a square cube, be very conscious of placement of your subs. It won't effect anything below 50Hz, but much of the good stuff is above 50Hz and you'll have lots of nulls if you don't spread your subs out in 3 dimensions. Yes that means getting one of them off the floor. Just do a good sub crawl with both.

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post #30860 of 31357 Old 04-07-2019, 06:14 PM
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Originally Posted by Droidboi View Post
Thank you so much man. I am pretty dead set on the sb 2000's at this Point. The pb 2000 are also a little big for my room so I wouldn't have many places to put them. I also suspect I will get great authority down to the 10 hz frequencys.
I'm in agreement with @pase22 and @Magellan55 ...a ported sub (PB2000) will better meet your movie performance needs/criteria/expectations.

I've heard and experienced both the SB2000 and PB2000 in small rooms. Mike is correct, "rumble" (below 30 Hz) and "chest thump" (between 50 - 100 Hz) are two different effects and occur at different frequencies. If you are truly a movie person, the ported PB2000 will provide both in balanced proportions. Movie people initially buy sealed subs due to their smaller footprint and lower cost...ultimately find it perfect for music but find it somewhat disappointing in movie performance. Other posters have provided the technical explanations for the performance of both types. However, the most beneficial thing you can do is experience both for yourself by ordering one of each...an SB2000 and an PB2000. The one that provides you with what you're looking for is the keeper...order a second while returning the less preferable one. If the PB2000 is the keeper, don't allow size to enter into the equation. For serious enthusiasts, the goal is best possible performance for one's use case...period. In fact, if you find the ported PB2000 more favorable, eventually the PB3000, PB4000 or PB16 will likely be in your upgrade path. The adage that there is no replacement for displacement sill holds true!
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post #30861 of 31357 Old 04-08-2019, 08:02 AM
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Only a handful of movies out there have any significant LFE below 30 Hz, because as Mike pointed out movie theaters can't reproduce it and neither can most home theaters.
My experience is the exact opposite; I've found that a significant number of movies have sub-30Hz content, and a solid percentage of HT's can produce it quite well. Movie theaters tend to emphasize volume over depth and clarity, but at home it's not uncommon for people to have more capable systems. Movie soundtracks increasingly seem geared toward the latter so a subwoofer able to produce solid output into the low 20's or upper teens is a wise choice (budget permitting, of course).
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post #30862 of 31357 Old 04-08-2019, 08:26 AM
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What is it that gives that kick in the chest then? I thought it was from authority in the lower levels (10-30 hz)?If they do go down that low I still wouldnt feel it? Lifewire recommended the sub for hom Theatre if the room is less than 1800 cubic feet, mine is around 700.
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Originally Posted by Droidboi View Post
Thank you so much man. I am pretty dead set on the sb 2000's at this Point. The pb 2000 are also a little big for my room so I wouldn't have many places to put them. I also suspect I will get great authority down to the 10 hz frequencys.
Quote:
Originally Posted by gene4ht View Post
I'm in agreement with @pase22 and @Magellan55 ...a ported sub (PB2000) will better meet your movie performance needs/criteria/expectations.

I've heard and experienced both the SB2000 and PB2000 in small rooms. Mike is correct, "rumble" (below 30 Hz) and "chest thump" (between 50 - 100 Hz) are two different effects and occur at different frequencies. If you are truly a movie person, the ported PB2000 will provide both in balanced proportions. Movie people initially buy sealed subs due to their smaller footprint and lower cost...ultimately find it perfect for music but find it somewhat disappointing in movie performance. Other posters have provided the technical explanations for the performance of both types. However, the most beneficial thing you can do is experience both for yourself by ordering one of each...an SB2000 and an PB2000. The one that provides you with what you're looking for is the keeper...order a second while returning the less preferable one. If the PB2000 is the keeper, don't allow size to enter into the equation. For serious enthusiasts, the goal is best possible performance for one's use case...period. In fact, if you find the ported PB2000 more favorable, eventually the PB3000, PB4000 or PB16 will likely be in your upgrade path. The adage that there is no replacement for displacement sill holds true!

Hi,

I think that it may be helpful to summarize some of the discussion, at this point, since there are several potentially conflicting opinions being expressed. That's pretty normal for subwoofer threads on AVS. But frankly, if I were the OP, I might be a little bit confused right about now.

Let me see if I can summarize some of the major points. First, ported subwoofers are definitely better at generating <35Hz SPL, but the OP is in a 700^3 room. He already gets a lot of room gain, and moving from dual SB1000's to dual SB2000's will be a significant increase in both overall SPL and in low-frequency SPL. If he is willing to invest in a miniDSP, he can use the room gain in that small room to have as large a low-frequency house curve as he wants, or he can put a bump somewhere in the mid-bass range to increase chest punch. Since he already uses REW, that should be an easy exercise.

Second, ported subwoofers are also better at generating low-frequency tactile sensations. These very low-frequency sensations would be distinct from mid-bass chest punch sensations. Mid-bass chest punch is caused by sudden percussive sounds in the 50Hz to 120Hz range, and enough SPL, with the right content, will account for most of that sensation. The deep rumbling/thudding low-bass sensations are enhanced by being on a suspended wood floor, which the OP has. (And, carpet won't make any real difference if there is enough SPL to make the wooden floor vibrate at low-frequencies.) That's where the miniDSP may be helpful in creating a strong low-bass house curve.

Third, the OP is in Sweden and may not have access to the same free-trial periods we have here, and his placement opportunities are going to be extremely limited in a 9' by 9' room. I like recommending ported subwoofers, where people are looking for more low-bass, and I like recommending buying larger subwoofers in preference to smaller ones. But, I think that our recommendations need to pass a reasonableness test.

Without a strong reason to believe that the OP can't get what he wants from sealed subs, I am going to have a hard time telling him that he really needs dual PB2000's in a 700^3 room, on a suspended wood floor. I believe that with dual SB2000's, a miniDSP, and a little bit of effort, the OP can get all the bass he will ever want in that room. And, I honestly think that dual ported subs, such as the PB2000's, could be a bit overwhelming in that space, as room gain in that small a space would greatly augment the <35Hz SPL, and the wooden floor would also augment the low-bass TR, natively produced by two ported subwoofers.

The OP demonstrated that he can get a good frequency response, even in a geometrically-challenging room, so dual subs definitely seem like the way to go here. And, in my personal opinion, this is one of those situations that really does call for sealed subs. I think that even most people who are accustomed to having ported subs would find two of them overwhelming in a 700^3 room, on a suspended wood floor.

I personally think that the OP is on the right track, with his last post, saying that he is leaning heavily to dual SB2000's, although if he can try one of each (an SB2000 and a PB2000), as Gene is suggesting above, it would be a great way for him to find out what he actually likes best. If nothing else, he would have a better sense of whether he would like the additional low-frequency TR, produced by a ported sub, in his room.

Regards,
Mike
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GUIDE TO SUBWOOFER CALIBRATION AND BASS PREFERENCES

* The Guide linked above is a comprehensive guide to Audio & HT systems, including:
Speaker placements & Room treatments; HT calibration & Room EQ; Room gain; Bass
Preferences; Subwoofer Buyer's Guide: Sealed/ported; ID subs; Subwoofer placement.

Last edited by mthomas47; 04-08-2019 at 08:57 AM. Reason: Clarification
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post #30863 of 31357 Old 04-08-2019, 01:54 PM
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Originally Posted by mthomas47 View Post
I personally think that the OP is on the right track, with his last post, saying that he is leaning heavily to dual SB2000's, although if he can try one of each (an SB2000 and a PB2000), as Gene is suggesting above, it would be a great way for him to find out what he actually likes best. If nothing else, he would have a better sense of whether he would like the additional low-frequency TR, produced by a ported sub, in his room.
Thanks for clarifying some of the possible confusion for the OP. As you've suggested, much of his eventual satisfaction and performance expectations will be highly dependent on the physical parameters of his relatively small space and its interaction with his chosen sub type. I'll stand by my belief that auditioning both the SB2000 and the PB2000 will provide him the greatest degree of understanding and knowledge...hopefully it's an available offering for him.
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post #30864 of 31357 Old 04-08-2019, 07:01 PM
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Originally Posted by CHASLS2 View Post
I have had the SB1000, 2000 and now a 3000. Each was a good jump up from the other in my 12x13 sealed bedroom. I now have a SB2000 and 3000 up front and they shake the room. The rocket lift off in the movie Interstellar blows the house down.
I'm using the same sized bedroom in an apartment for my "man cave/home theatre". Right now it's a 3.1 system but I may set up the rears later for a 5.1 setup. I have the SVS SB1000 but I'm considering upgrading to either the SB2000 or SB3000. Do you think the price increase for either of these subs over the SB1000 is worth it? My sub is paired with the Fluance SXHTB speaker set and Yamaha RX-V481 receiver.

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post #30865 of 31357 Old 04-08-2019, 07:37 PM
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Originally Posted by Magellan55 View Post
Just want to add to what Mike said about content. Only a handful of movies out there have any significant LFE below 30 Hz, because as Mike pointed out movie theaters can't reproduce it and neither can most home theaters. I do get good room gain with my SB2000's (my mike is only cal'd to 10Hz, but REW shows flat down to 5), but not all that much "rumble". It's there in the few movies that have it, but tops out below 100 dB, which isn't all that much in terms of shaking a room. Not sure you will be satisfied with the upgrade, as you may be looking for more than the SB2000's can provide. Keep in mind to really shake a room down at that level, requires ported subs or many KW of power (beyond even an SB16). Or a chair shaker, like someone else suggested.

Since your room is a square cube, be very conscious of placement of your subs. It won't effect anything below 50Hz, but much of the good stuff is above 50Hz and you'll have lots of nulls if you don't spread your subs out in 3 dimensions. Yes that means getting one of them off the floor. Just do a good sub crawl with both.
not much below 30 hz ?
you serious ?
have you seen the list of movies here, with bass graphs?
ive got a pb-4000 thats flat to about 17hz or so, and i feel cheated everytime i see one of those graphs .
some movies are in the single digits
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post #30866 of 31357 Old 04-08-2019, 11:32 PM
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Picked up 2 pb 3000's a few weeks ago and felt like the house was going to fall with all the rattling so I picked up these isolation feet: SVS SoundPath Subwoofer Isolation System, 4-Pack https://www.amazon.com/dp/B00NCSQ5GK..._vPdRCb1MJ1WMH

Adding those stopped all the rattling except with the glass/metal on the gas fireplace. I was thinking about adding an isolation pad to go with the isolation feet, but I can't find any big enough to fit the dimensions of the pb 3000. I'm not sure if it will even help honestly. Does anyone have any suggestions for me and my dilemma? I'm racking my brain trying to figure something out. Every thing is almost perfect except for that freaking glass on the fireplace!

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post #30867 of 31357 Old 04-09-2019, 04:16 AM
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Quote:
Originally Posted by nodoubt View Post
not much below 30 hz ?
you serious ?
have you seen the list of movies here, with bass graphs?
ive got a pb-4000 thats flat to about 17hz or so, and i feel cheated everytime i see one of those graphs .
some movies are in the single digits
Yes, actually I do check out the bass movie lists. The ones that don't drop off a cliff below 30 Hz are the exceptions. The typical movie looks like this recent blockbuster:
https://imgur.com/rgOE7Vw

If this wasn't typical, why are there threads like this, dedicated to fixing the problem with bass EQ:
https://www.avsforum.com/forum/113-s...l#post56610134

And by "home theater", I meant the general home movie setup, not dedicated home theaters. The typical home movie is watched via a sound bar or HTIB, or just TV speakers. The folks on this forum with real subs are in the vast minority of movie watchers, and movie producers know this.

HT: OLED65E6P (ChadB cal'd), STR-DN1080, UBP-X800, 7 Take Classics, Dual SB2000's
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post #30868 of 31357 Old 04-09-2019, 04:17 AM
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Quote:
Originally Posted by Canuck31 View Post
I'm using the same sized bedroom in an apartment for my "man cave/home theatre". Right now it's a 3.1 system but I may set up the rears later for a 5.1 setup. I have the SVS SB1000 but I'm considering upgrading to either the SB2000 or SB3000. Do you think the price increase for either of these subs over the SB1000 is worth it? My sub is paired with the Fluance SXHTB speaker set and Yamaha RX-V481 receiver.
It's worth it. Keep the 1000 and add a 2000 or 3000.

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post #30869 of 31357 Old 04-09-2019, 05:17 AM
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Quote:
Originally Posted by Jermaine Davis View Post
Picked up 2 pb 3000's a few weeks ago and felt like the house was going to fall with all the rattling so I picked up these isolation feet: SVS SoundPath Subwoofer Isolation System, 4-Pack https://www.amazon.com/dp/B00NCSQ5GK..._vPdRCb1MJ1WMH

Adding those stopped all the rattling except with the glass/metal on the gas fireplace. I was thinking about adding an isolation pad to go with the isolation feet, but I can't find any big enough to fit the dimensions of the pb 3000. I'm not sure if it will even help honestly. Does anyone have any suggestions for me and my dilemma? I'm racking my brain trying to figure something out. Every thing is almost perfect except for that freaking glass on the fireplace!

Hi,

Random rattles can be very annoying, but they aren't always coming from the subwoofers' contact with the floor. Subwoofers, and especially ported subwoofers, produce both sound pressure (SPL) and particle velocity (literally air moving, as opposed to sound waves traveling through the air). So, using feet or pads under subs can help somewhat with vibrations transferred via direct contact with the subwoofer cabinet and a suspended wood floor, but they may not eliminate airborne vibrations caused by SPL and particle velocity.

One thing you can try to do is to isolate the vibration at the source of the rattle, by using little felt pads where the glass contacts the fireplace. Remember the little round felt pads made to go under lamps or whatever, to protect furniture? Something like this might work, and they would be available in different sizes at stores like Home Depot:

https://www.amazon.com/Self-Stick-Fu...s%2C144&sr=8-8

If you were determined to try an acoustic pad, there are larger ones like the one shown below, but they can get expensive. They don't need to be exactly the same size as the subwoofer, as long as they decouple the subwoofer from the floor. That decoupling usually works best with a suspended wood floor, which resonates in sympathy with certain frequencies. That's what your glass screen is doing. You can also make something yourself, using several thicknesses of carpet pad or foam rubber. You just want something that will reduce transferred vibrations from the cabinet to the wood floor.

https://www.amazon.com/Auralex-Acous...gateway&sr=8-1

It's hard to know what will work until you try something, but I would definitely consider the possibility that you need to isolate the rattling glass at the source of the rattle, rather than at the subwoofer cabinets' contact with the floor.

Regards,
Mike


Edit: Since other people read these threads, including Guests who can't post, I decided to add some detail to my post, for general interest. Good subwoofers, such as the PB3000, have fairly thick walls made of relatively inert MDF. The purpose of that is to prevent unwanted resonances within the cabinet itself. But, they are never completely inert. For instance, at high volumes, a subwoofer can slide a little bit on a polished surface such as marble, tile, or wood.

Meanwhile, suspended wood floors--floors which are elevated above a crawl space or on an upper floor--can resonate (vibrate like the head of a drum) at certain low-frequencies. The specific resonant frequency would probably be below 25Hz, and could be well below 20Hz, depending on the density of the construction. So, direct contact with a subwoofer cabinet can create some degree of sympathetic resonance with a suspended wood floor. And, decoupling the cabinet from the floor, with some type of acoustic material, may help with that.

But, that is not the only way that wood floors can be made to resonate sympathetically, and it is not the only way that vibrations may be transmitted to other parts of the room, or even to adjoining rooms. As noted in this and other posts, both sound waves and particle velocity (PV) can create tactile energy which makes the air-filled cavities of our chests resonate briefly (chest punch) from abrupt percussive mid-bass sounds, and which can make wood floors and adjoining structures resonate from low-bass sounds at high sound pressure levels.

So, decoupling a subwoofer from a suspended wood floor, may help a little or a lot, depending on the overall density of construction. Using my friend @darthray as an example, he gets a lot of sympathetic vibrations in walls, AC ducts, etc, in his HT, even on a concrete slab. So, in his case, he has to be careful about having too much SPL and PV under about 18Hz, and he has to treat vibrations at the source of the rattle. That is because airborne SPL and particle velocity are affecting his room, and not transferred vibrations from the subwoofer cabinets themselves. (Concrete laid on top of soil is not a very good conductor of direct vibration.)

I believe that this issue isn't as well understood as it might be, so I thought that some additional explanation could be helpful.
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GUIDE TO SUBWOOFER CALIBRATION AND BASS PREFERENCES

* The Guide linked above is a comprehensive guide to Audio & HT systems, including:
Speaker placements & Room treatments; HT calibration & Room EQ; Room gain; Bass
Preferences; Subwoofer Buyer's Guide: Sealed/ported; ID subs; Subwoofer placement.

Last edited by mthomas47; 04-09-2019 at 07:05 AM.
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post #30870 of 31357 Old 04-09-2019, 05:21 AM
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Quote:
Originally Posted by CHASLS2 View Post
It's worth it. Keep the 1000 and add a 2000 or 3000.
Well as much as I'd like to have dual subs it's a little difficult to have electronics in this room without having to use extension cords. There are only power outlets on two of the four walls in the room. See the location of my setup in the floor plan attached. It's in the top corner bedroom.
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