However here are some reminders: The Portico 5017 dissipates about 7 watts, which means that it will get warm in use. The heat generated is radiated through the case work. To avoid overheating Portico™ modules should not be stacked imme- diately above or adjacent to other equipment that gets hot.
Page 3
Portico modules can alternatively be powered from a 12 volt battery, in which case the supplied AC power unit is not needed. When using a 12 volt battery, choose one that has enough capacity to power your Portico 5017 - or your complete assembly of Portico modules - for the expected duration of your session.
Page 4
Portico 5017: Front Panel Vari-phase High Pass Filter Continuously rotates the Reduces signals by phase of the instrument 12dB/octave signal Threshold When signals exceed the “threshold” level, the gain is Instrument Gain reduced at a 2:1 ratio, with a constant attack and release Provides 0 to 30dB gain with a times.
MICROPHONE PREAMPLIFIER DESIGN NOTES In former years, before the introduction of solid state amplifiers, transformers were necessary to step up to the very high input impedance of tubes, and to provide a balanced input for the microphone line. An input impedance of 1,000 or 1,200 ohms became established for microphones having a source impedance of 150 or 200 ohms, with connection being made on a twisted twin screened cable (This type of cable, while excellent for low impedance work, has high capacitance between its conductors and between each conductor and screen.
Page 6
The Portico 5017 microphone amplifier provides an input impedance of 10,000 ohms which means that variations in microphone source impedance with frequency, have only a very small effect on the sonic quality.
sound may well have a flawed data bank! Quality recording equipment should be capable of retaining “natural” sound and this is indeed the traditional measuring stick. And “creative” musical equipment should provide the tools to manipulate the sound to enhance the emotional appeal of the music without destroying it.
Page 8
Single Channel Use Blended DI and Mic Signals When used for instruments, the 5017 can be used to phase align, combine and compress direct and miced instrument signals. To achieve this, use the DI for the instrument’s direct signal and the mic preamp for the speaker cabinet signal. Connect the external ampli- fier to the passive DI thru on the 5017 faceplate. The blend control is used for mixing direct and amplified signals to achieve the desired tonality of the two sources, and the variphase is used to minimize or extenuate phase cancellations between the two signals. To compress the blended signal, the internal compressor jumper must be set to the blend path (this is the default setting). This technique could also be used to create a single, mixed output of a guitar and vocals. To Recorder or Mixing Board Instr. In PHASE COMP COMP VARIPHASE THRESH THRU DI-Z SILK GAIN BLEND MIC GAIN Mic In Amp Mic...
Page 9
Dual Channel Use - Vocal and Instrument Used as a two channel device, a lead singer / guitar player, can take the classic studio quality of the 5017 wherever they go. In this scenario, the vocal would use the mic input, the compressor and mic output, while the guitar would use the instrument input and blend output. To achieve this, the blend control should be selected as fully DI, and an internal jumper needs to be set to the mic path. When engaged, Silk mode would effect both vocal and guitar tracks, and the HPF control would affect only the mic path. Independent vox and guitar signals To Recorder or Mixing Board Instr. In PHASE COMP COMP VARIPHASE THRESH THRU DI-Z SILK GAIN BLEND MIC GAIN Mic In Vocal Mic For the vocal and guitar tracks to be seperate, the blend control must be set to fully DI BLEND...
When the Mic Gain switch is set to Unity (0 dB), the Portico 5017 microphone pre-amplifier can handle a balanced input signal of more than +20 dBu without an input attenuator pad! This is a unique feature that enables this input to double as an additional line input.
Combines the Mic and DI signals on the DI / Blend Output. When Blend is set to fully DI, the 5017 operates with two separate channels. +48V Back panel switch makes phantom power available at the microphone input. PHASE Push button inverts the polarity of the signal path. The symbol “Ø” is often used to denote opposite polarity.
SPECIFICATIONS Frequency Response: Main Output, no load, –0.2 dB @ 10 Hz –3 dB @ 160 kHz Noise: 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 Noise Factor 1.5dB...
5017 RECALL SHEET COMP INST VARI COMP Mobile Pre/DI/Comp PHASE + 10 PHASE SWEEP THRESHOLD THRU SILK INST INST INST GAIN BLEND MIC GAIN COMP INST VARI COMP Mobile Pre/DI/Comp PHASE + 10 PHASE SWEEP THRESHOLD THRU SILK INST INST INST GAIN BLEND MIC GAIN...
PRODUCT WARRANTY Rupert Neve Designs warrants this product to be free from defects in materials and workmanship for a period of one (1) year from date of purchase, and agrees to remedy any defect identified within such one year period by, at our option, repairing or replacing the product.