DocDerr EL/Rx-V 500 Series Multi-Purpose Tone Module
One of the newer members of the Empirical Labs family is the DocDerr,
a 500 series multi-purpose tone enhancement module that houses six
different sections of digitally controlled analog processing. With over
two years of meticulous development and testing behind it, the DocDerr
provides an unprecedented combination of power and musicality in a
compact, easy to use format.
An extremely low-noise preamp capable of line or 16 dB of
instrument gain is followed by four sections of EQ combining a two
position high pass filter with three parametric bands, each with its own
set of carefully tuned frequency presets.
The versatile EQ is followed by a unique dynamics section,
which offers renowned Empirical Labs compression at an unprecedented
price, combined with an extremely musical tape emulation circuit that
softens and tames high frequencies and transient spikes. We believe
it’s the best single knob “knee” compression available in this format.
One of the pivotal features of the DocDerr is the “Mix” knob,
which allows the user to blend the uncompressed EQ’s signal with the
compressed and saturated signal. This parallel compression technique,
used by top recording and mixing engineers for many years unlocks a
whole world of sonic possibilities.
Like all ELI 500 series modules, the EL-Rx is available with
either horizontal or vertically oriented front panel configurations.
The DocDerr is ideal for tracking, perfect for fine-tuning
tracks during mixing, and a killer solution for the gigging musician in
search of studio quality tone control.
Whether in use as a tracking tool, or something to tame
problematic high frequencies and transient spikes during mixdown or at
live venues, the DerrEsser is an extremely valuable and versatile
addition to any 500 series lunchbox.
Specifications
• Six digitally controlled sections of analog processing.
• Frequency response - 3 Hz to 180 kHz on eq section (-3dB points).
• Dynamic range - 120 dB from maximum output (.5%THD soft
clipping) to minimum output. Noise floor with Mix on 0 is typically
– 91dBu.
• Distortion range - between .0006% and 10% at 1KHz, depending on mode and settings.
• Maximum Input before hard clipping - +22dBm, “ Line In” mode. Maximum Output (Mix at 0) - +28.5dBm.
• Compressor Dynamics Time Constants - Attack time is around 1mS. Release .2 sec, fixed internally.
• Input Impedance - 120k Ohm, Instrument In Mode, output impedance
is less than 75 ohms. 20K input impedance in balanced Line in mode.
• Guitar adaptor cable included.
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