Description
The Manley Massive Passive Mastering is a two channel, four band equalizer, with additional high pass and low pass filters. In the Massive Passive, the “GAIN” and “BANDWIDTH” controls DO interact (on purpose). We cannot create a “GAIN” switch that is set up for “consistent” 1/2 dB steps. When you change the “BANDWIDTH” the step size must and will change. On the regular version, you get a full 20dB boost or cut only when: the bandwidth is fully clockwise (narrow) in bell mode or fully counter-clockwise in shelf mode. Here on the Mastering Version, this maximum boost or cut is 11dB.
Conversely at the widest bell, the maximum boost or cut is 6dB and the narrowest shelf maxes out at 12 dB. A similar situation is also true for the bandwidth detents. So in this new Mastering Version, do not expect a certain dB change per step as it will vary according to where the bandwidth is set. But whatever the step sizes are, they will be repeatably 16 steps. The FREQUENCY select is already detented as it is and always has been a Grayhill switch. It also interacts in shelf mode.
Manley Massive Passive Mastering 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
- Passive HP and LP Filters plus gain trims
- ns & Outs Balanced XLR & 1/4″ (accepts unbalanced)
- Level +4 dBu nominal, internal switches for -10 operation
- Bypass Switch bypasses EQ & tube circuits (not hardwire)
- 44 Frequencies (roughly 1/4 octave spacing)
- Frequency Range: 22 Hz to 27 Khz
- EQ Boost/Cut Range : Maximum 11dB boost or 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 12AU7, 4 x 6414
- Power Consumption (120/240VAC): 72 watts
- Mains Voltage Frequency: 50~ 60Hz
- Size (3U): 19″ x 5.25″ x 10″
- Weight: Unit 21 lbs.
- Manual here
