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Thread: My new SVS 25-31PC-Plus

  1. #11
    Join Date
    Dec 2003
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    Syracuse, New York
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    1,222

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    Quote Originally Posted by dae3dae3
    "It’s very close to the new PB12-Plus. The PC+ you have will actually be a bit stronger from 25hz and up, but the PB12-Plus will have a slight edge below 20hz."
    That's a trade-off that I'd be more than happy with. I want below 20hz for sure but everything above 25 is a heck of a lot more useful. Thanks for the info.

    David

  2. #12
    Join Date
    Jul 2004
    Location
    Birmingham, Alabama
    Posts
    462

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    Glad you like the new sub. A couple of posts back you mentioned that it may take a while to get used to clean bass from a quality sub. I agree 100%. Before I got the HSU, my sub was an older P.O.S. JBL. It was loud and boomy and turned up waaaaay too hot as I later found out. After setting up the VTF3-MkII and properly calibrating it, I was underwhelmed at first. A good sub that is properly set up will not call attention to itself at all with music, but will fill in the last octave. If your sub sounds like a teenager's Honda Civic, then you need to turn it down. When it comes to movies, a good quality, properly setup sub will not call attention to itself until it needs to. If the background music to you wife's soap operas is bumping like a 70's porno flick, then you need to turn it down. It does take a little while to get used to clean, effortless bass.
    - EVH III

  3. #13
    Join Date
    Feb 2005
    Location
    Huntington, Indiana
    Posts
    146

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    I just tried the sub in 16 Hz mode.

    That was cool.

    I definitely noticed more infrasonic stuff coming through at the detriment of the "higher" bass. Not really too bad though. I was watching Star Wars Phantom Menace and the scene where Obi Wan finally kills Darth Maul has some cool low end stuff. It is hard to A B very quickly because of having to take out the port plug but I was able to get it close enough to get a good test. I can see why Nicholas digs the infrasonics. I may leave it in 16 Hz mode. I doesn't seem to be bottoming out and my ears are ringing a little right now from having it cranked much louder than I usually would watch a movie trying to see if the sub would throw out its wallet and hit the ejection seat.

    I will try this again after I get my 340's and throw in some music with the test as well. I usually don't listen to music with my current speakers because they annoy me. If the music suffers too much with the lower tune I may run in a higher mode. Actually, it really only takes a minute or so to change the tune so I may just switch it to a lower tune for movies. My receiver will save custom speaker levels configurations so I could just set one up for the different tune levels.

    Edited: for grammar. It was bothering me.
    Last edited by dae3dae3; 05-03-2005 at 04:53 AM.

  4. #14
    Join Date
    Sep 2004
    Location
    Winnipeg, MB, Canada
    Posts
    143

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    IMO, you're asking for trouble by leaving it in 16 Hz tune with two ports plugged. You will almost certainly bottom the driver at some point with an unexpected burst of strong infrasonic information. Try it at moderate volumes for fun, by all means, but don't leave it like that. You're safer at 20 Hz with one port plugged, but even then, you'll be taking a risk if you like things loud - and once you get your 340s, that will likely be a real temptation.

    If you decide you really like the deeper tune, you should consider eating the return shipping charge and exchange the sub for a 20-39 PC+ (my first choice) or even a 16-46.

  5. #15
    Join Date
    Feb 2005
    Location
    Huntington, Indiana
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    146

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    I think a 32.5" tall sub is as much as I can ask my wife to tolerate for now. I will definitely play around with it before I decide. I just think it is cool having options. I won't be disappointed if I end up in 20 Hz mode. Ron at SVS didn't seem too concerned about 20 Hz mode. I think going from 25 to 20 Hz mode on a 25-31 PC+ is not as big a deal as going from 16 to 12 Hz on a 16-46 PC+. The 16 to 12 Hz change is half an octave. The same half an octave drop from 25 Hz is 18.75 Hz so there is more head room. Also, IMHO the 25-31 PC+ is a beast in 25 Hz mode and has some headroom to give away.

    On the other hand, from what I have read of some peoples listening habits they would bottom this thing out in about 5 seconds in 16 Hz mode. It took me about 2 years to get around to ordering the sub so I'm having fun with it so far. I will make some decisions based on my preferences and experiences with the sub after I have had it for a while. However, I doubt very much that the final choice will be 25 Hz. mode

  6. #16
    Join Date
    Feb 2005
    Location
    Huntington, Indiana
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    146

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    Sorry if the "band geek" in me came out in that last post talking about octave ranges.

    I have had the unfortunate luck of being mentally scarred by both ear training and music theory classes in college and Microsoft certification tests after college. I now over analyze everything I hear and read.

  7. #17
    Join Date
    Sep 2004
    Location
    Winnipeg, MB, Canada
    Posts
    143

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    No need for apologies. I am quite comfortable with and very much appreciate lucid technical analysis, and yours is dead accurate as far as it goes. I'll take that any day of the week over vague subjective emotion-laden attempts at describing sound quality...

  8. #18
    Join Date
    Feb 2005
    Location
    Massachusetts
    Posts
    335

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    Glad to hear that it's not bottoming out.

    Try "The Incredibles" (if you have it).
    0:37:45 to 0:39:00 or so, the first robot battle.
    About 1/2 way through the scene the robot turns into a ball and rolls to the side. The very next roll where it shows him dropping to the ground as a ball caused my 1646+ to bottom in 12Hz mode. I think it comes awful close even with all ports free in it's native 16Hz tune (this is at 105dB).

  9. #19
    Join Date
    Feb 2005
    Location
    Madera,CA,USA
    Posts
    201

    Lightbulb

    Since cylinder subs do not need all the internal bracing that a box sub does, it makes it lighter as well as less expensive. I for one also think it looks much better than a box sub. After all, I'm not listening to a piece of furniture!

    I've yet to bottom my old SVS 25-31PC, even though the Incredibles scared me with the amount of low end coming out of the sub. Mine has the upgraded ISD driver and the replacement 300W Bash amp, which does utilize a subsonic filter below 20Hz.
    Feel Free to visit my website:
    The Bailey's Home Theatre in Our Living Room

    Equipment List:
    Hitachi 57F59 HD CRT RPTV
    Outlaw 990/7125 PrePro/Amp
    Panasonic BD10 Blu-Ray Player
    Mains: Ascend CMT-340M
    Center: Ascend CMT-340C
    Surrounds: Ascend CBM-170
    Sub: SVS 25-31PC

  10. #20
    Join Date
    Feb 2005
    Location
    Huntington, Indiana
    Posts
    146

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    Quote Originally Posted by Eddie Horton
    If the background music to you wife's soap operas is bumping like a 70's porno flick, then you need to turn it down.
    LOL

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