Interphase Audio Iridium 500 Series Silver

Interphase Audio Iridium 500

Interphase Audio Iridium 500

Starting from £599.00
  • 4-band Inductor EQ
  • 16 Inductors across the 4 bands
  • Tight control of selected frequencies
  • Available with silver or black faceplate
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SKU
025287

Interphase Audio Iridium 500

The name Iridium is based on “Iris”, the Greek goddess of the rainbow. And that is exactly what you’ll get. A silky smooth rainbow of EQ. Dial in any frequency, and be amazed. 

Inductor based circuits are the “holy grail” of equaliser designs. These were used for example in the much favoured Pultec equaliser design, which dates back to the late 1950’s. Owing to their unique electro-mechanical properties, inductors impart a character all of their own, which is very distinctive.

The Iridium uses 16 inductors spread out over the four bands, with custom-wound Carnhill inductors in the low-mid and low bands, giving precise control and the inductor sound on each band.

Iridium is a Class-A, discrete design, with all components carefully chosen and matched to provide an extremely musical sound. You’ll get a very distinctive sound, which most sound engineers love. However, this circuit is a decidedly modern design with updated techniques and components that were simply not available 60 years ago. This is definitely not a “clone” or “copy”.

As a consequence of using inductors, this provides a “peaking” or “bell” characteristic, giving tight control of the frequency selected.

Each band provides switch selection of any of 6 carefully selected frequencies chosen at musically pleasing intervals. Each band allows very fine control of up to 15dB cut or boost per band.

  • 4-band Inductor Equaliser
  • Inductors impart a character all of their own, which is very distinctive.
  • Precise control and the inductor sound on each band.
  • Tight control of the frequency selected.
  • Input impedance: 30kohm
  • Common mode rejection: 80dB
  • Distortion: 0.001% (+4dBu output, 1kHz)
  • Frequency response: 7Hz to 70kHz (-3dB)
  • Boost / Cut range: +/-15dB (continuously variable)
  • HF Frequency: 8, 9, 10, 12, 14, 16 kHz (stepped)
  • HMF Frequency: 1.5, 3, 5, 6, 7, 8 kHz (stepped)
  • LMF Frequency: 125, 250, 500, 1k, 2k, 4k Hz (stepped)
  • LF Frequency: 50, 80, 100, 150, 300, 600 Hz (stepped)
  • Filter Q: 1.2 (just over 1 octave)
  • Maximum input level (500 module): +28dBu
  • Maximum input level (51x module): +32dBu
  • Maximum output level (500 module): +28dBu (10k load)
  • Maximum output level (51x module): +32dBu (10k load)
  • Nominal input and output level: +4dBu (electronically balanced)
  • Output impedance: 100 ohm
  • Noise floor (typical, unweighted, EQ on): -80dBu
  • Noise floor (unweighted, EQ off): -100dBu
  • I/O connections (Rack XLRs): pin 2 +, pin 3 -, pin 1 ground
  • Current requirement: 81mA (maximum) per rail
  • Size and weight: Standard 500 Series, 0.75 kilos

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