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Item # 620892

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Manley Massive Passive Stereo EQ
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      Manley Massive Passive Stereo EQ (620892)
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With simple passive components that allow twice as much EQ with half the coloration.

The Manley Massive Passive is a two-channel, four-band equalizer with additional high-pass and low-pass filters. "Passive" refers to the tone-shaping part of this clever EQ design, which doesn't use any active circuitry. Only metal film resistors, film capacitors and hand-wound inductors sculpt the sound—kinda like a Pultec EQ on hyper-steroids. Super-beefy, hugely-high-headroom Manley all-tube make-up gain amplifiers deliver your tunes into the next realm.

Creating natural, organic, acoustic tone can only be done with an equalizer that treats the signal with natural methods. The Manley Massive Passive uses simple passive components and exploits their natural qualities rather than forcing a complex circuit to meet an arbitrary clinical or scientific goal. Manley knows that recording and mastering equalizers are used by artists for artistic goals and they balanced this design with a little more art than science. The Massive Passive Equalizer is intended both for the most radical EQ sometimes needed for tracking as well as the most subtle shadings for vocals and mastering. It is designed to be a fundamentally different EQ but incorporates the best strengths of Pultecs, choice console EQs, parametrics and graphics. The difference is that the Manley Massive allows twice as much EQ with half the coloration. It allows huge HF boosts without sibilance problems and unbelievable fatness without mud. This is unique. Being different also gives it some quirks and idiosyncrasies that will spark your creativity and sense of audio adventure.

The Filters — 5 frequencies Hi Pass and bypass, PLUS 5 frequencies Lo Pass with bypass. Manley made them extra steep. 36dB/oct! Why? When you need to remove the garbage, this does the trick and allows more of the real music to be untouched. The other reason is that it sounds killer when combined with the regular bands. Towards the mids this degree of steepness may be tamed somewhat. Thinking drums and guitar stacks, and other tough jobs. These filters are passive too.

Manley Massive Passive Stereo EQ Features:

  • All-Passive tone sculpting circuitry
    Unique Shelf curves use the "bandwidth" control
    Overlapping and Interleaved Frequency choices
    Every band switchable to shelf or bell
    Vacuum tube make-up gain and line drivers
    Parallel symmetrical topology
    Premium components throughout
    HP and LP Filters plus gain trims


Manley Massive Passive Stereo EQ Specifications:

  • Ins & Outs Balanced XLR & ¼" (accepts unbalanced)
    Level +4 dBu nominal, internal switches for -10 operation
    Bypass Switch bypasses EQ & tube circuits (not hardwire)
    44 Frequencies (roughly ¼ octave spacing)
    Frequency Range: 22 Hz to 27 Khz
    EQ Boost/Cut Range : 20 dB boost, 20 dB cut
    Nominal Q range: 1.5 to 3 (uniquely active in shelf modes)
    Frequency Response: ± 2 dB: 8 Hz to 60 KHz
    Maximum Output @ 1.5% THD +37 dBv; +26dBv @ 20 Hz
    THD & Noise (1KHz @ +4 dBu): 0.06%
    Noise Floor (referred to +4dBu): -85 dB (A Weight)
    Dynamic Range: 120 dB
    Tube Complement: 2 x 12AX7 EH, 4 x 6414 for serial MSMPX### after 2/2004
    Tube Complement: 2 x 5751, 4 x 6414 for serial MSMP### until 2/2004
    Power Consumption (120/240VAC): 72 watts
    Unit is factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
    Operating Mains Voltage changeable with power transformer changeover switch and fuse value change.
    Mains Voltage Frequency: 50~ 60Hz
    Size (3U): 19" x 5.25" x 10"
    Weight: Unit 21 lbs. Shipping Weight: 27 lbs.


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