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SVS SB12-Plus best sub for music?

2157 Views 19 Replies 7 Participants Last post by  rockemsockem
I'm not at all interested in ultra-low frequencies...but I am interested in something that can produce loud and tight mid-bass. Is the SB12-Plus the one, or are there other sealed subs that can truly compete with it for an equal or lower amount of money?
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I can't really speak first hand for the competition, but the SB12+ is super for music and it's features and build quality are top-notch.


One possible competitor at a similar price might be the ACI Force XL. The ACIs are reputed to be excellent for music.
I do have a variety of SVS subs including SB12+, PB12+/2 & PC+ 25-31. SB12+ delivers a tight bass, which i prefer over others for Music

Quote:
Originally Posted by suniil /forum/post/0


I do have a variety of SVS subs including SB12+, PB12+/2 & PC+ 25-31. SB12+ delivers a tight bass, which i prefer over others for Music

Suniil, how does the PC+25-31 do for movies, and also for music? I've just bought a PC+25-31 along with a 5.0 setup from SVS (SCS-01 center and l/r mains, SBS-01 surrounds). Do you ever feel the need to use the down-tuning plugs (to go down to tune of 20hz or 16hz), and if so, does it muddy the mid-range bass at all?


Just ordered this morning, so I have (too much) time to think about all the tweaking I'll be doing to my setup.


Thanks.
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I have a PB12-Plus, and a SB12-Plus. In my ears the SB12 is a just as good music sub as its bigger brother 99% of the time. The exception is songs with high levels of infrasonics were the PB12 can pressurize the room very convinsingly.


An example of this is "Enya - The Longships". On the other hand, the room compensation control on the SB12 is a great tool for dialing in just the type of bass you want, and if you are not interested in infrasonics they can be removed easily.
Hood7: when it comes to movies, you miss lower extensions on SB12+.


In my case, SB12+ goes down to 24hz and PC+ down to 16hz and that makes a huge difference in movies. I've tested several moves including War of the worlds, lord of the rings etc on both the sub where PC+ outperforms SB12+


PC+ does not deliver tight bass (35hz-60hz) as SB12+ for musc
Thanks Suniil. Do you use the tuning plugs to get your PC+ down to 16hz, or does it reach down there somewhat with its stock tuning?


I'm thinking I'll be happy with the PC+, since I'll use it more for movies than music.

Quote:
Originally Posted by suniil /forum/post/0



PC+ does not deliver tight bass (35hz-60hz) as SB12+ for musc

Sorry but I don't agree. I have owned both and they both sound really tight. It's just that PC+ has a more boost down low (natural frequency response rises towards low frequencies), so if you don't EQ it, it will sound more bottom heavy i.e. not as tight. A small low frequency cut will make it sound as tight as the SB12-Plus.

Quote:
Originally Posted by Richard Mayer /forum/post/0


Sorry but I don't agree. I have owned both and they both sound really tight. It's just that PC+ has a more boost down low (natural frequency response rises towards low frequencies), so if you don't EQ it, it will sound more bottom heavy i.e. not as tight. A small low frequency cut will make it sound as tight as the SB12-Plus.

Ditto, if you don't spend the time properly integrate your sub, then anything will sound bad.

Quote:
Originally Posted by Hood7 /forum/post/0


Thanks Suniil. Do you use the tuning plugs to get your PC+ down to 16hz, or does it reach down there somewhat with its stock tuning?


I'm thinking I'll be happy with the PC+, since I'll use it more for movies than music.

If you don't use the plugs, you will damage the sub.

Quote:
Originally Posted by rockemsockem /forum/post/0


If you don't use the plugs, you will damage the sub.

Sorry, Rockemsockem, but I think you may be giving out some bad info here. There is no reason that not using port plugs will damage that sub as long as the amp settings properly match the tuning. With no port pugs, it is the stock tuning.
I think you misunderstood me. If you turn the filter to 16 Hz, and don't insert the corresponding number of plugs, you can damage the sub from my understanding.


Maybe Ed will see this and give us the right answer. :)
I may have misunderstood you. I was unaware we were talking about the filter being set at 16hz. I thought Hood7 was asking if the sub still had any significant output in the 16hz range in it's natural tune. It might depending on room gain even with the filter properly set.
Yeah, sorry if I was unclear. I'm really wondering if people are actually using the plugs (along with the dial) to tune down to 20 or 16hz, or if they're satisfied with the PC+25-31's performance on movies in its stock 25hz setting (which I expect still plays some lower frequency sound).
you definitely have to tune to 16hz to get lower extensions (with all ports open / knob to 16hz).


currently i'm running PC+ & SB12 simultaneously Eq'd using left and right channels of BFD FBQ2496, calibrated with REW.

Quote:
Originally Posted by suniil /forum/post/0


you definitely have to tune to 16hz to get lower extensions (with all ports open / knob to 16hz).


currently i'm running PC+ & SB12 simultaneously Eq'd using left and right channels of BFD FBQ2496, calibrated with REW.

If you have all ports open, you're not in 16Hz tune.

Quote:
Originally Posted by Hood7 /forum/post/0


Yeah, sorry if I was unclear. I'm really wondering if people are actually using the plugs (along with the dial) to tune down to 20 or 16hz, or if they're satisfied with the PC+25-31's performance on movies in its stock 25hz setting (which I expect still plays some lower frequency sound).

I am an advocate of always plugging at least one port, because it seems to smooth out the response curve, which yields more accurate bass. See the graphs below, the 1st one is with all ports open (25Hz tune), and the second is with one port plugged (20 Hz tune).


The +-3db response goes from 24Hz-82Hz, to an impressive 19Hz-120Hz.



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Very interesting. Looks like you could make an argument that the PC+25-31 is a better sub with one port blocked/tuned to 20hz than it is in stock tuning. The only downside I see on the curves (and I'm far from being tech-savvy enough to totally comprehend them) is that you lose a couple decibels from the top. But that's fine with me, as the PC+ should still be plenty powerful enough for my 2000 cu.ft. room.


Sorry my PC+ questions have sorta hijacked this thread. But I do appreciate the great info!
Don't be that hard on me, mate
. you know what i meant (all ports closed)!!


anyways my graph, tuned to 16hz
http://i36.photobucket.com/albums/e12/suniil/pc25.jpg

Quote:
If you have all ports open, you're not in 16Hz tune.
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It's all so darn confusing! :)
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