Description
500 Series Inductor EQ
The 551 Inductor EQ is the only equalizer for the 500 Series actually designed by Rupert Neve. Featuring 3 bands of EQ inspired by Mr. Neve’s most prized vintage designs, along with custom-wound inductors, transformers and class-A gain blocks, the 551 brings the thick, powerful lows and sweet highs of Rupert’s classics to the 500-Series format for the very first time.
The “Best-Of” EQ
The 3-band, custom-tapped inductor EQ on the 551 was inspired by RND’s favorite portions of Rupert’s vintage EQ designs. The low frequency band is designed to produce a creamy, resonant bass response – however, unlike the vintage modules that inspired it, the LF band on the 551 can be used as either a shelf or a peak filter, adding punch, dimension, and control to your low end. The 551’s inductor midrange band is ideal for sweetening vocals and instruments while bringing them forward in a mix, and its proportional “Q” response makes it well-suited for minimizing problematic frequencies. The high frequency band is a hybrid vintage / modern design, blending inductor circuitry with capacitor-based topologies to achieve vintage tones with enhanced control. The High Pass filter is a 12dB/octave design with a fixed 80Hz frequency, and can be used in tandem with the low frequency EQ to add low-end presence without clouding the source material.
As Rupert originally intended with his most prized classic designs, each EQ section uses low-feedback, class-A discrete electronics to prevent low-level artifacts and harshness from detracting from the tonal shaping. However, this new circuit is a decidedly modern design with updated techniques and components that were simply not available 35 years ago, and should not be considered a “clone”.
Inductor EQ
The first 500-Series EQ designed by Rupert Neve. 551 EQ’s are built around custom-wound Inductors and are based on our favorite bands from Mr. Neve’s classic EQ modules
Low EQ
+/- 15dB Shelf or Peak, selectable at 35 Hz, 60 Hz, 100 Hz or 220 Hz
Mid EQ
+/- 15dB with 6 center frequencies; 200 Hz, 350 Hz, 700 Hz, 1.5 kHz, 3 kHz and 6 kHz, with High Peak switch to narrow the bandwidth (increase the Q) of the filter
High Shelf
+/- 15dB Shelf or Peak selectable at 8 kHz or 16 kHz
HPF
12 dB/octave high pass filter with a fixed 80 Hz frequency
Transformer I/O
Built around Rupert’s custom transformers, designed especially for the 500-Series format
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