Manley Massive Passive is a 2-channel, 4-band Vacuum Tube Equalizer, featuring a passive tone-shaping portion of the equalizer design and using only the best components, for its ultimately huge, high-headroom performance. The Massive Passive is packed with five highpass filters and four lowpass filters, and you can bypass either or both. The filters are steep, so you can pull out the junk without touching the real music. It’s also great-sounding when combined with other bands. Ultimately, Manley went for “what’s useful” when designing the Massive Passive, not “what’s standard” – it’s a welcome design departure that produces seriously massive results.
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
Ins & 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 : 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.