Rupert-neve 517 - 500 series DI/Pre/Comp User Manual Page 1

1By:Serial #:Operations ManualPortico 517500 Series DI / Pre / Comp

10 With gain at unity better than –100 dBu With gain at 66 dB better than –60.5 dBu Equivalent Input Noise better than –125 dBu DI With Gain

11 Attack & Release: Fast Mode Attack 40ms , Release 40ms Slow Mode Attack 100ms , Release 350msTotal Harmonic Distortion: Measured @ Ma

2Portico 517: 500 Series DI / Pre / Compressor User GuideThank you for your purchase of the 517: 500 Series DI / Pre / Compressor. Everyone at Rupert

3Portico 517: Block DiagramRupert NeveDesigns517THRU INSTVARI-PHASE48vINMIC GAINBLENDSILKO/LACTIVEINGNDLIFT363024181260dB6660544842MIN MAXCOMPRESSORIN

4MICROPHONE PREAMPLIFIER DESIGN NOTESIn former years, before the introduction of solid state ampliers, transformers were necessary tostep up to the v

5 In the early 1960’s when the “Pop” music scene was exploding and sound levels in the Studio became very high, there was concern that the head ampli

6sound may well have a awed data bank! Quality recording equipment should be capable of retaining “natural” sound and this is indeed the traditional

7ToRecorderorMixingBoardAmplified Instrument Use with Blended DI and Mic SignalsWhenusedforinstruments,the517canbeusedtophasealign,com

8517 FEATURESMICROPHONE INPUTThe microphone input is balanced but not oating, being a variant of an instrumentation amplier.Our well-proven “Transfo

9your own judgment.BLENDCombines the Mic and DI signals on the DI / Blend Output. +48V Back panel switch makes phantom power available at the micr