The Portico 5032 is a single channel Mic Pre/EQ having an independent transformer coupled Line level input for the EQ section. It includes a full-featured Mic Pre identical to the 5012 with the addition of a flexible 3 band Equalizer in the Mr. Rupert Neve tradition. The 5032 is equipped with high and low frequency shelving curves and a Parametric Mid Band covering 80Hz-8kHz in two ranges.
The Rupert Neve Designs 5032 module is a half rack width, 1.75 (1U) module in the now well-known Portico style. The 5032 is ideal for both tracking and mixing applications with selectable mic or line inputs. Both paths have full access to the EQ, phase, silk and mute making it the ideal choice for either standalone operation, or forming the core of a larger mixing system. As with the entire Portico range, the construction is a heavy and robust steel shell that provides total magnetic screening and exceptional mechanical stability. The front panel is machined from a solid 1/8-inch aluminum plate with a steel sub panel behind it.
Alternative front panel layouts are available providing a choice of vertical or horizontal mounting. When the horizontal front panel is chosen, a single 5032 can sit firmly on a bench or desktop on its detachable rubber feet. Two 5032s can be joined with the optional Horizontal Joining Kit (Model # 5221-RM) and mounted across a standard 19″ rack.
When the vertical option is chosen, up to Eight 5032s can be mounted in the optional Vertical Frame. This leaves a 3″ wide space that can be used to house a Power Supply or monitor unit. The Vertical Frame assembly is designed for rack mounting and includes basic rear cable management. Blank panels are available to fill any unused spaces when the full complement of eight modules is not fitted into the optional Vertical Frame.
The Portico 5032 module comprises a single microphone pre-amplifier identical with those found in the Portico 5012, and a new 3-band Equalizer. The output stage is identical with that of the Portico 5012, using single-sided circuitry, driving a carefully configured output transformer that can deliver a full + 25dBu from the balanced and ground-free secondary winding.
The subtleties of audio circuit design as relating to sonic performance are becoming more clearly understood by designers and professional users. For example, it is evident that frequencies above 20 kHz and incredibly small distortion and non-harmonic artifacts, affect the way that humans perceive sound. Specifications and measurements do not fully disclose these sonic qualities that are important to sound engineers and musicians. There is no substitute for hours of patient listening and experimental bench work that results in the sweet and silky sound of my classic designs.
Low Shelf and High Shelf
The Portico 5032 Equalizer makes use of both a High Frequency and Low Frequency shelving characteristic that provide steeply rising or falling curve shapes. Such curves, when used aggressively, enable second and even third harmonics to be varied in relation to a fundamental, allowing the natural sound of a musical instrument to be varied. Used less aggressively, bands of frequencies above or below the “turnover” frequency can be adjusted to desired levels.
These sections each provide EQ curves that approximate to 6 dB/Octave with a boost or cut of up to 15 dB and a true “Flat” response at the center of the control track. Frequencies chosen for these “turnover” points are the result of critical listening and follow traditional equalizer patterns.
Peak EQ (Mid-Band)
This section provides a very wide range of frequencies in two bands with a powerful “Q” or bandwidth control. The range of boost or cut is +/-15 dB with a true “Flat” response at the center of the control track. The steepness of the actual curve slopes can exceed 6 dB/Octave which results in a powerful chisel type of tool. The “Q” control offers completely variable bandwidth, from very narrow to super wide, having a range of “Q” = 0.6 to “Q” = 3.0. The base band covers 80 Hz to 800 Hz, which is important when dealing with the body of a spectrum or for thinning a muddy acoustic environment. A x10 button multiplies the frequency of the base band by x10 (i.e. it provides continuity from 800 Hz to 8.0 kHz).
Separate mic and line inputs may be selected. With both inputs, phase, silk, HPF, and the 3 bands of EQ are available for use.
Fixed 150Hz frequency with continuously variable gain of +/-15dB
Mid Parametric Band
Continuously variable frequency in two ranges from 80 Hz to 800 Hz and 800Hz to 8KHz, selected with the 10X push button; continuously variable Q; continuously variable gain of +/- 15 dB
Fixed 8Khz and 16Khz frequencies selected with the 8K/16K push button; continuously variable gain of +/- 15 dB
Engages all three bands of EQ
Much could be written about this feature, suffice to say, that it gives a subtle option to enhance sound quality in the direction of vintage modules. The Silk button reduces negative feedback and adjusts the frequency spectrum to provide a very sweet and musical performance. We suggest you try it and make your own judgment.
-30 dBu to +22 dBu With reference to the output
Cuts of the output signal post metering and pre Buss Output. Be sure to mute the outputs before engaging phantom power.
High Pass Filter
The High pass filter is a valuable aid in any signal chain but particularly so in a microphone preamplifier. Signals between 20 and 250 Hz can be attenuated, leaving the range above this unaffected. This gets rid of building rumble, air handling motor hum etc.
Provides 48V phantom power to microphones
Flips the phase of an incoming source 180 degrees
Main Output, no load: 0.2 dB @ 10 Hz / 3 dB @ 160 kHz
Measured at Main Output, unweighted, 22Hz-22kHz, Terminated 150 Ohms.
With gain at unity: better than 100 dBu.
With gain at 66 dB: better than 62 dBu
Equivalent Input Noise: better than 128 dBu
High Pass Filters: Continuously variable swept frequency from 20 Hz to 250 Hz.
Slope: 12 dB/Octave
Gain: Unity to +66dB in 6 dB steps, Trim continuously adjustable from 6dB to +6dB
Buss Output: Output is designed to feed a Buss-mix Amplifier (ie. Buss inputs on 5043) at the internal system level of -2.5 dBu.
Maximum Output Level: Maximum output from 20 Hz to 40 kHz is +25 dBu.
Mute: Mutes Main Output only.
Total Harmonic Distortion and Noise: @ 1kHz, +20 dBu output:
Main Output: Better than 0.001%
@ 20Hz, +20 dBu output:
Main Output: Better than 0.002%
Silk Engaged: Better than 0.2% Second harmonic
Low Shelving EQ: +/- 15dB boost or cut. Corner frequency 160Hz
High Shelving EQ: +/- 15dB boost or cut. Corner frequency 8kHz 16kHz switch selectable
Mid Peak EQ: +/- 15dB boost or cut. Continously variable frequency, 80 to 800Hz or 800Hz to 8000Hz switchable
Phantom Power: +48 Volts DC +/- 1%
Voltage range: 9 to 18 Volts DC
Current consumption: @ 9VDC Current is 910 mA typical: Power = 11.7W
@ 12VDC Current is 670 mA typical: Power = 12.0 watts
@ 15VDC Current is 530 mA typical: Power = 12.0 watts
@ 18VDC Current is 450 mA typical: Power = 11.7 watts
Connector: 5.5mm X 2.1mm DC jack, Center Positive