Electrodyne 2511
MPN #Electrodyne 2511 EQ
The Electrodyne 2511 (Two Electrodyne 511 two-band inductor EQs in a 19" chassis) is a classic two-band discrete transistor reciprocal active inductor equalizer, which was first introduced in 1970.
The Electrodyne 511 is a classic two-band discrete transistor reciprocal active inductor equalizer using 1969 / 1970 design technology. The custom inductors and output transformer are made by Electrodyne's original maker, to strict factory manufacturing tolerances as small as 2%. This allows consistent eq performance and repeatability from channel to channel that was not possible in the 60,s. Smooth performance and eq response from minimum to maximum gain at all frequencies, provides unusually broad sonic and tonal options not experienced since the 1970,s.
You will have the peace of mind knowing that the 2511 eq is NOT a recreation and NOT a clone. Electrodyne Audio is still the same company that produced groundbreaking audio consoles and recording equipment in the 1960's and 1970's. We are 100% back in operation and here to stay. We build with the same quality and attention to detail that developed our reputation, and continue to manufacture, right here, in California.
All current designs are built following actual original Electrodyne proprietary factory lab and engineering notes. And we have even gone to the trouble to have the designs reviewed and approved by original Electrodyne engineering staff for accuracy and adherence to company design criteria.
Features
All discrete transistor designCustom wound Output Transformers (original manufacturer)Custom wound eq Inductors (original manufacturer)Custom concentric gain/frequency switches (mil-spec quality)Original design knobs and control levers (original manufacturer)Rugged powder coated steel chassisHeavy-gauge Anodized Aluminum Face PlateAll XLR I/OActive balanced discrete transistor inputTransformer balanced outputIndividual Low and High Shelving Switches per band for each channelEach eq band network is completely bypassed when its gain control is placed at the "0" mark On/Off Power SwitchRed LED Power Indicator
Specifications
Input: Active balanced discrete transistor impedance converter.Output impedance: 150 ohms+/-12 db gain range: Equalize or Attenuate4 frequencies selectable per band. LF: 40, 100, 250, 500hz. HF: 1.5k, 3k, 5k, 10k.Peak/Shelf function on each band. Shelving at all frequencies, Peaking at 250, 500, 1.5k, 3k and 5k.Distortion: 0.03%typical.Maximum output: +30db at less than 0.8%thd. (+29.5db at 0.06%thd)Frequency response: +/- 0.25db, 10hz to 70khz typical.Signal to noise: -85db typ.
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