Moog 500 Series The Ladder Filter Processor

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    Product Description

    The Moog Music 500 Series The Ladder Filter Processor is a Dynamic Transistor Ladder Filter that is based on Moog's original ladder filter designs. Don't be fooled by its small size, the 500 Series Ladder is a powerful and fantastic sound sculpting tool that allows for creative and unique sound shifting and shaping. By design, the Moog Ladder sports the smoothest all analog Low Pass and High Pass filter section.

    Adjust the Cutoff knob to add vibe, warmth or tonal adjustment. Choose LP to add analog warmth to a sound or select HP for sweetening the heft of a sound. The Moog Ladder Filter will smooth out the harshest of tracks and add warmth and body to any sound. The Ladder Filter audio processor excites dull or lifeless tracks, and has the power to shape sound in a way that is excitingly unique.

    That thing is endlessly deep. You could use it on about every instrument to make it more interesting or give it its own character. I could play with it for days. Michael Wagener.

    The Envelope section of the Moog Ladder filter is where things get really cool:

    • Variable Attack and Release controls allow you to perfectly dial in the behavior of the Moog Ladder's envelope section. Use these controls to open and close the envelope as fast as lightning, or slow as molasses.
    • Use the Amount control in Positive or Negative mode for mild to extreme sound shaping and manipulation. From slight timbral excitement and voicing to extreme compression-like behavior. Even reversed filter action is achievable!
    • The Resonance control used with the 500 Series Ladder’s other features allows for the creation of sweet, dynamic and even speech like behavior. Use it to tune The Ladder to a sound source, or not. You can excite or accentuate specific frequencies as well as create completely new unique and wild sounds.
      NOTE: The Ladder's Resonance control will push the unit into self-oscillation. This can be used for effect if desired.
    • The 2Pole/4Pole switch allows you to select how aggressive your filter slope is. 2 pole is equal to 12db per octave which is smooth and sweet, while 4 pole is 24db per octave which is hard and aggressive.
    • You also have a hard wire Bypass for totally transparent routing and A/B comparison.

    Product Specifications
    Moog Music 500 Series The Ladder Filter Processor Specifications
    • Audio I/O: Balanced line level via 500 rack. +19dBu to -16dBu input accepted
    • Filter Type: 2 and 4 pole dynamic low-pass and high-pass transistor Ladder Filter
    • Envelope Type: RMS detector, bi-polar with variable attack and release
    • Attack time: Better than 250uS to 2.0 seconds depending on program material and level
    • Release time: Better than 150mS to 2.0S depending on program material and level
    • Envelope Control: Positive and Negative Modulation
    • Input Impedance: Nominally 24Kohms balanced differential, 12Kohms unbalanced single ended
    • Output Impedance: Nominally 50ohms differential 25ohms single ended
    • Max. Output Level: Better than +22dBu, balanced
    • Drive Gain: 36dB Range of control
    • Output Gain: 36dB Range of control
    • Frequency Response: Better than +/-0.5dB 20Hz – 20KHz pass band. Better than +/- 1.5dB 5Hz – 24KHz pass band
    • Bypass: Hard Relay True Bypass
    • Power Consumption: Less than 105mA +16V, less than 75mA -16V
    Helpful Info about the Manufacturer
    Phone:  800-948-1990 Warranty: 
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    MSRP: $1,698.00
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