BBE processor.. What is REALLY happening VIDEO LINK

Discussion in 'Effects [BG]' started by jschwalls, Mar 13, 2014.


  1. jschwalls

    jschwalls Supporting Member

    Joined:
    Sep 4, 2007
    Location:
    Savannah GA
  2. ggoat!!!

    ggoat!!!

    Joined:
    Apr 6, 2008
    Location:
    Lousy-Anna
    Wow! I'll have to watch this as soon as I can get back to 1990...

    :)
  3. jschwalls

    jschwalls Supporting Member

    Joined:
    Sep 4, 2007
    Location:
    Savannah GA
    HAHHAA.. I know guys that still use this unit and swear by it..

    I have never liked them but I could not explain why.. this video does a great job at explaining it..
  4. Hobobob

    Hobobob Don't feed the troll, folks. Supporting Member

    Joined:
    Jan 25, 2011
    Location:
    Camarillo, CA
    I own the pedal version, but I only ever use it when I want to make a passive bass sound active. It's basically just a 2 band boost only active EQ in a box, although 12:00 on both knobs is just about at the same level as the bypass signal. Seeing how the bypass cuts low end in that video really makes me want to take it off my board.
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  6. boomertech

    boomertech Gold Supporting Member

    Joined:
    Apr 8, 2009
    Location:
    Syracuse, NY
    Disclosures:
    Designer/Owner of FEA Labs
    That video doesn't tell the whole story on the BBE SM.

    The BBE Sonic Maximizer uses a state-variable filter to divide the input signal into three bands (bass, mids and highs). It then remixes the bass signal (with its own level control) with the mids signal (no level control) and the highs "process" signal. The highs "process" signal has a level control along with a voltage controlled amplifier (VCA) that automatically adjusts the high levels.

    BBE has JRC manufacturing most of the above circuitry on an IC, the NJM2153.

    From the NJM2153 data sheet:
    *************************************************
    The NJM2153 is a sound enhancement audio processor for
    professional audio equipments. It regenerates high definitive and
    nearly real sound.

    The internal VCA (voltage controlled amplifier) suppresses the
    boost gain in high band to reduce noise when faint signals are
    inputted.

    The NJM2153 is suitable for mixer and effecter for musical
    instruments, and high-end audio equipment requiring low distortion
    and wide dynamic range.
    **************************************************
    The VCA on the high frequency band looks at the full-band input signal level and "turns-up" the high-band "process" signal level for stronger input signals and "turns-down" the level for weaker input signals. Acting more like a dynamic high frequency expander. If you look at the video again you will see the high frequencies flutter a bit as the signal generator sweeps the range. So there is a bit more going on than what he is demonstrating in his video. If he adjusted the generator levels you would have seen how the circuit was designed to operate.

    -Frank
    Last edited: Apr 26, 2014
  7. AlexBassMP

    AlexBassMP

    Joined:
    Feb 5, 2014
    Location:
    Barcelona
    Trust your ears , not your eyes.

    If it sounds good to you.. who cares?

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