> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solidyne.ar/llms.txt
> Use this file to discover all available pages before exploring further.

# Technical specifications

## General specifications

<Accordion title="Inputs">
  * **Balanced stereo**: XLR-3 and RJ45 connectors\
    Auto-adjusting level 0 dBu to +15 dBu, Z = 600/10 kΩ
  * **Unbalanced stereo**: RCA connectors\
    Auto-adjusting level –15 dBu to 0 dBu, Z = 10 kΩ
  * **Digital USB (optional)**
</Accordion>

<Accordion title="Outputs">
  * **Balanced stereo**: XLR connectors, +4 dBu, Z = 600/10 kΩ\
    With de-emphasis (flat response).
  * **Digital USB (optional)**
</Accordion>

<Accordion title="MPX Outputs">
  * Dual MPX output with independent level adjustment (4 Vpp, factory setting), Z = 600/10 kΩ.
  * Differential output for canceling ground loop hum between transmitter and studio ground.
</Accordion>

<Accordion title="Audio specifications">
  * **Frequency response**: 20 – 16,000 Hz ±0.5 dB (measured below compression/limiting threshold).
  * **Harmonic distortion**: \< 0.02% (30 – 15,000 Hz).
  * **Noise**: \< –90 dBA referenced to 100% modulation.
  * **Stereo separation**: > 75 dBA.
  * **Subsonic filter**: 2nd order Chebyshev, 15 Hz.
</Accordion>

<Accordion title="Processing">
  * **Asymmetrical cancellation**: 5:1 ratio, Kahn-Bonello method.
  * **Expander**: 10:1 slope, 100 µs attack.
  * **AGC (wideband)**: VCA controlled.\
    Range: 30 dB (–10 dB / +20 dB relative to nominal input level).
  * **Multiband compression**:
    * 3 bands, 18 dB/octave, linear phase crossover.
    * Compressors: 30 dB range, 5:1 slope.
    * Automatic attack.
    * Recovery: controlled by Energy knobs.
    * Clipper with IM canceller (> 30 dB attenuation below 250 Hz).
    * Dynamic EQ: 0 – 12 dB dynamic boost in bass, mid and treble.
</Accordion>

<Accordion title="Power supply">
  115 V / 230 V (selector on rear panel)\
  50/60 Hz, 20 W
</Accordion>

<Accordion title="Dimensions">
  19" rack mount module (44.4 mm).
</Accordion>

***

## Stereo Coder Specifications

<Accordion title="Audio input">
  2 Vpp for 100% MPX output (4 Vpp).
</Accordion>

<Accordion title="Audio specifications">
  * **Frequency response**:
    * 15 kHz / 5th order elliptic LP filter, –1 dB at 15 kHz.
    * 20 – 14,000 Hz ±0.25 dB.
    * Attenuation at 19 kHz > 40 dB.
  * **Harmonic distortion**:
    * \< 0.01% THD (20 – 15,000 Hz).
    * Typical: 0.003% @ 1 kHz.
  * **S/N ratio**: > 90 dBA (ref. 100% modulation).
  * **Stereo separation**: 65 dB @ 1 kHz.
</Accordion>

<Accordion title="Harmonic suppression">
  * 38 kHz: better than –70 dB (ref. 100% modulation).
  * 57, 76 and 95 kHz: better than –75 dB (ref. 100% modulation).
</Accordion>

<Accordion title="Pilot tone stability">
  ±0.002% (±0.5 Hz).
</Accordion>