Looking for a GOOD Sub with a Frequency Response Greater than 120htz

Discussion in 'Archived Threads 2001-2004' started by Evan S, May 27, 2002.

  1. Evan S

    Evan S Cinematographer

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    Here is my problem...looking to upgrade my subwoofer (presently a Mirage BPS-100) to either an SVS or HSU or another yet to be researched brand (open to suggestions).

    I have an SACD setup where I run bass management internally in my Sony 555ES player and run analog direct to my preamp. Problem is, word on the street is that the Sony does the internal crossover at 120htz before sending the signal out to the 5.1 setup. Seeing my present sub has a range of 29-150htz, this isn't a problem right now. However...

    Seeing as the HSU VTF-3 has a frequency response of 18-90htz, and the SVS 25-31 has a frequency response of 25-100htz, I was wondering if people make subs anymore that have a frequency response of greater than 100htz? I was really looking forward to getting one of these fine subs, but if I'm going to have a 20-30htz gap between the Sub and the mains the way my system is configured, I'm going to have to look in other directions, other manufactuers. Can anyone recommend a different sub? I don't want to get an Outlaw Audio ICBM to rectify my situation, but I may have to if I don't have a choice.

    Thanks.
     
  2. John Garcia

    John Garcia Executive Producer

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    While you will have a slight gap, a x-over is not an all or nothing deal. A x-over has a slope associated with it, whether active or passive, which will typically allow for about one octave above or below the x-over frequency, gradually trailing off.
     
  3. Evan S

    Evan S Cinematographer

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    Thanks John...I guess it's not that big of a deal then. I shouldn't stress.
     
  4. John A. Casler

    John A. Casler Second Unit

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    Take a look at the SuperNova MKIV 10".
    http://earthquakesound.com/mkiv10.htm
    It is a remarkable sub and goes to 160hz. The built in x-over is an "Octave variable filter from 40 Hz to 160 Hz".
    That way you don't have to worry about too much of a mid bass "suckout" unless your room is bad or set up wrong.
    John Casler
     
  5. Gil D

    Gil D Supporting Actor

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    Evan,
    Can't you use the Analog DSP mode in the Anthem AVM20 and use it's adjustable crossover? Have you compared this mode to Analog Direct?

    I have an HSu TN1220 driven by a Parasound 1201 mono (so no 90Hz limitation) and with my Denon's 80Hz analog/dsp hybrid xover it works pretty well with my Sony C555es. I would expect your Anthem to be an improvement over the Denon.

    The 120Hz crossover sounds pretty good with some mutichannel SACDs but I wouldn't use it for stereo CD & SACDs.
    Gil
     
  6. Michael R Price

    Michael R Price Screenwriter

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    First, you don't have to worry about it at all.

    Second, most of those specifications are arbitrary. I don't recall seeing any subwoofer where the crossover is limited to less than 100 Hz. I think the SVS and Hsu subs are rated to tight specifications, they will still produce enough output up to and beyond 120 Hz if you set the crossover accordingly. I'd be surprised to find the actual frequency response of the driver falling off at such a low frequency.
     
  7. Parker Clack

    Parker Clack Schizophrenic Man
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    Evan:

    I know you can email Tom directly with your concerns and he will be able to address them. In addition he will make honest recommendations on not only the brands that SV Subs sell but others too.

    Parker
     
  8. Michael Mohrmann

    Michael Mohrmann Screenwriter

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    Evan,
    I am not sure whether you need a new sub, but in case it is important to have extension beyond 120Hz, ACI subs tend to go above that (usually rated +/-3db to 250Hz). Here are their current subs:
    Titan II LE
    The Force
    Michael
     
  9. ling_w

    ling_w Second Unit

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    The Hsu subs are rated to 90hz only because its crossover freq goes up to 90hz. Once you defeat that, it would not have a premature rolloff.

    If I were you, I wouldn't run the mains as small due to the fact that it will reroute bass below 120hz to the sub, which is too high to way to high, depending on your speaker type.

    If you are not sure, you could call Dr. Hsu directly and ask him about sub integration at that freq. His number is available at his website.
     
  10. Evan S

    Evan S Cinematographer

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    OK, along the way I must have gotten some bad information.
     
  11. Lee Bailey

    Lee Bailey Second Unit

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  12. BryanZ

    BryanZ Screenwriter

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    An Outlaw ICBM may help you. Better yet, try and get confirmation of the Sony's crossover point and see if there is any way you can set the crossover to 80 - 100Hz.
     
  13. Gil D

    Gil D Supporting Actor

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