511b

The Electrodyne 511b is a modern expansion of a classic, bringing the legendary sound of the original 511 and vintage 711L equalizers into a 500 Series format with significantly extended flexibility. Using the same custom inductors, opamps, and transformers as its predecessors-still crafted by the original manufacturer-the 511b delivers unmatched tonal smoothness and musicality across the entire gain range.

With 12 shelving and peaking frequencies per band and switchable wide/narrow Q options, the 511b provides a total of 37 precise EQ settings. Each band offers six peaking and six shelving frequencies, with stepped-gain controls in 1 dB increments for exact adjustments, ideal for both tracking and mastering. Whether you're sculpting individual sources or dialing in a stereo pair, the 511b maintains consistency and warmth with a design that honors its roots while meeting today's demands.

• Expanded tone shaping: Offers 6 shelving and 6 peaking options per band, including wide/narrow peak settings-totaling 37 EQ positions.

• Smooth and musical EQ: Classic inductor-based design delivers precise, natural tonal adjustments from subtle to bold.

• Vintage-correct components: Uses original-style inductors, transformers, and opamps-built to exacting modern tolerances for consistent performance.

• Stepped gain control: Detented knobs in 1 dB increments allow easy recall and mastering-grade precision.

• Stereo-compatible design: Fully matches the original 511 EQ, so 511 and 511b units can be paired for stereo setups.

• High-quality construction: Film capacitors and rugged build ensure durability and professional studio reliability.

• Single-slot 500 series module: Compact and compatible with any standard 500 series rack.

GENERAL SPECIFICATIONS:

• 500 Series two-band inductor EQ module

• Based on the classic Electrodyne 511 and 711L EQ designs

• Discrete-transistor active inductor topology

• Uses custom vintage inductors and transformers (original manufacturer)

• High-quality film capacitors throughout EQ circuitry

• Solid state design

• Single-channel

• Occupies 1 module slot

EQ BAND CONFIGURATION:

• Two-band configuration: Low and High bands

• 6 peaking positions per band

• Narrow and standard peak bandwidth switch per band

• 1 bonus frequency per band

• Total of 25 peaking frequency selections

• 6 shelving positions per band

• Total of 12 shelving frequency selections

• Combined total: 37 EQ positions

CONTROLS AND FEATURES:

• Stepped gain pots: +/-1 dB to +/-6 dB in 1 dB steps

• Unity-gain calibration trimmer for mastering and precision recall

• Fully matches the EQ selections and curves of the original 511

• Stereo pair compatibility with Electrodyne 511 when matched on settings

APPLICATION:

• Suitable for tracking, mixing, and mastering

• Designed for use in 500 series racks

• Ideal for use where recall and sonic consistency are critical