Massive Passive EQ
Equalizer
From Manley Labs:
Since its introduction, the Manley Massive Passive has redefined passive tube equalization: organic, musical, and unmistakably powerful. Hand-built in California, it combines metal-film resistors, film capacitors, and hand-wound inductors with all-tube makeup gain stages, to deliver unparalleled tonal sculpting for tracking and mastering. In combination with a Manley Backbone Mastering Matrix this EQ becomes an audio engineer's dream in M/S mode!
From vocals and instruments to full stereo mixes, the Massive Passive delivers huge high-frequency boosts without sibilance and unbelievable low-end fatness without mud. Its passive topology and vacuum tube amplification ensure every adjustment feels intuitive and sounds transparent
Every band on the Massive Passive offers switchable shelf or bell curves with overlapping, interleaved frequencies across a 22 Hz to 27 kHz range. Balanced XLR I/O, passive high-pass and low-pass filters, and meticulous hand assembly make it essential for any world-class studio
Specs
- Inputs
- Balanced XLR & 1/4” (accepts unbalanced)
- Outputs
- Balanced XLR (accepts unbalanced) & Unbalanced 1/4”
- Level
- +4 dBu nominal
- Bypass switch bypasses EQ & tube circuits
- 1/4” Jacks (not hardwire)
- Bypass switch bypasses EQ, tube circuits & input buffer
- XLR Jacks (Hardwire Bypass)
- Gain trim
- -6dB - 0dB - +4dB
- Frequencies
- 44 Frequencies (roughly 1/4 octave spacing)
- Frequency range
- 22 Hz to 27 kHz
- EQ boost/cut range
- Maximum 20 dB boost or cut
- Nominal Q range
- 1.5 to 3 (uniquely active in shelf modes)
- Maximum input level
- +21dBu
- Maximum output level (1kHz sine, 1% THD+N, BW 22Hz-22kHz, load 100kOhms)
- +35dBu
- Frequency response (@ +4dBu, load 100kOhms)
- -0.1 dB @ 10Hz, -1 dB @ 60 kHz
- Total harmonic distortion (THD+N) (1kHz sine @ +4dBu, BW 22Hz-22kHz)
- 0.006%
- Output headroom (reference to +4dBu)
- 31dB
- Dynamic range (reference to maximum output)
- 123 dB
- Noise floor typical (unity gain)
- -88 dBu (A-Weighted)
- Signal to noise ratio (reference to +4 dBu, BW 22Hz-22kHz)
- 92dB
- Input impedance
- 20kOhm
- Output impedance
- 150 Ohm
- Tube complement
- 2 x 5751, 4 x 6922
- Auto-mute warmup delay
- 20 seconds
- Power consumption (120/240VAC)
- 44 watts
- Mains voltage & frequency (VAC/Hz)
- Internal Universal Power Supply 90-254 VAC / 50-60Hz
- Size (3U)
- L 19” x W 10” x H 5.25”
- Unit weight
- 15.5 Lbs.
- Shipping box
- L 23” x W 15” x H 10”
- Shipping weight
- 26 Lbs.
Source: Manley Massive Passive EQ product page