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Anyone tried Bag End's S18E-D with INFRA integrator?

Discussion in 'Amps and Cabs [BG]' started by Gladowsky, Aug 8, 2012.

  1. Gladowsky


    Apr 30, 2007
    Does anyone use the Bag End S18E-D with the INFRA integrator? This 18" cabinet can get down low (8Hz). Here's some information about it below.

    System Type:
    INFRA Sealed chamber (3 cu. ft.)

    8 Ohms

    Crossover Network:
    Requires INFRA Integrator

    Frequency Response:
    8 Hz to 95 Hz +/-3 dB
    (2 pi Steradians, with
    8 Hertz Integrator)

    96 dB SPL @ 80 Hz (1W @ 1m)
    Power Handling:
    400 W continuous sine wave
    400 W instantaneous peak

    A fundamentally new approach to low frequency reproduction, the INFRA employs electronic compensation to the uniform response that a sealed box loudspeaker system exhibits below its resonance frequency. The resultant frequency response can be extended well below the audible range while at the same time greatly reducing the influence of the system resonance. An INFRA system reproduces each note with precision and uniformity while maintaining a flat frequency and phase response, eliminating the tendency to emphasize the notes around resonance as in conventional bass systems. The enhanced INFRA dual integrator provides both a very flat response below resonance and the high frequency roll-off above resonance, for crossover to the midrange driver, without the use of conventional low pass filters and the delay typically introduced by them. An inherent bonus of the process requires the enclosures to be small. For example, a double 10-inch INFRA system measures only 13" x 22" x 13" (1.5 cu.ft.).
  2. In my mind they are pointless in an electric bass system. Most of the "energy" in the bass comes from the first harmonic. There is not all that much around the fundamental. A low B is about 31Hz in the fundamental so going down to 8Hz has no merit.
  3. Gladowsky


    Apr 30, 2007
    Yep - that's what I was thinking as well.
  4. Nightlyraider


    Sep 30, 2009
    Jauqo (whatever numeral) was selling off an infra stack earlier this year, so I would assume he tried it out.
  5. Roscoe East

    Roscoe East

    Aug 22, 2011
    Arguably the merit is in keeping the portion of the spectrum that you do want to reproduce well away from the extremes that the system is capable of reproducing.

    iow, if your system can only go down to 29Hz, trying to get it to reproduce 31Hz can be dicey because you're asking it to operate very near its limits. If the system can go down to 8Hz, 31Hz is a piece of cake.
  6. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    Still seems a pointless endeavor for bass guitar. Maybe as part of a PA system, but there are subs that can handle way more power already. And to *hear* anything that low, you'd need MEGA power.

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