This page lists the Pioneer modules currently available for purchase from Exclusively Analogue. This page will continue to grow as more modules are made available.
EA2002 Dual Voltage Controlled Amplifier
The EA2002 provide 2 Voltage Controlled Amplifiers that can be selected to be either Exponential or Linear in their response. Additionally, the ability to select either a positive or negative control input means it is possible to use this unit to do pan effects. The 2 control inputs are linked so if a control voltage is applied to VCA1 via the jack socket it is fed to the control input of VCA2. That link can be overridden by plugging into the VCA2 control input. Similarly, the signal inputs are linked so a signal applied to VCA1 input 1 is linked to VCA2 Input 1 but the link can be overridden by plugging into VCA2 input 1. This linking can be used to create voltage-controlled panning if VCA1 is selected to positive response and VCA2 selected to negative response. VCA1 Output can become the left channel and VC2 the right channel. Applying a sine or triangle LFO signal to the control input will give the panning effect.
EA2011 Quad Voltage Controlled Amplifier
The 2011 Quad VCA is a redesign of the original E-Mu Quad VCA using better VCA circuitry.
The Quad VCA module is an array of four independent linear two quadrant Multipliers. It is particularly useful for spatial modulation and voltage controlled mixing.
Each of the four identical VCA sections can function totally independently. The gain at zero control voltage for each VCA is determined by the associated initial gain control. Setting the control left of centre always results in zero gain, but as the control is rotated further counter clockwise, more control voltage is required before the VCA begins to pass any signal.
Each signal input is internally pre-patched to the input above it, so that to use a single signal source for all four VCA’s it need only be patched to the top input. If two inputs were required, each to a pair of VCA’s, one would patch to the first and third inputs. This of course aids in voltage controlled panning operations. The control inputs are similarly pre-patched for voltage controlled mixing.
EA2101 Voltage Controlled Low Pass Filter
The EA2101 is a redesign of the original Emu Low Pass Filter using the new SSI2144 IC which is basically an enhanced version of the famous SSM2044. This is a 4 pole, 24dB, Low Pass Filter ideal for creating the classic MiniMoog sounds. The addition of voltage control of the Q (Resonance), which was not on the original Emu LPF, adds a whole new dimension to the sound. The INITIAL FREQUENCY is set via a precision 10 turn potentiometer giving quite a broad range.
EA2140 Voltage Controlled Multimode Filter
The EA2140 Voltage Controlled Multimode Filter is similar to the Emu Universal Active Filter (UAF). Basically, it is a 2-pole filter arrangement using the new SSI2140 IC which is an enhanced version of the famous SSM2040. Dave Rossum has been involved in the design of several of the SSI ICs so the E-Mu connection remains. Individual 12dB Lowpass, Bandpass, Highpass, and Notch outputs are provided but there is also the ability to mix the various filter types to a dedicated MIX OUTPUT. There is also the ability to voltage control the Q, (Resonance), which was a feature of the E-mu UAF.
EA2201 Voltage Controlled Oscillator
The EA2201Voltage Controlled Oscillator (VCO) is a redesign of the Emu 2200 and uses the extremely stable CEM3340 IC. The INITIAL FREQUENCY is set via a precision 10 turn potentiometer giving quite a broad range and negating the need for a separate fine tune potentiometer that the original E-mu module had.
As well as the individual waveform outputs there is a mixing section where you can mix waveforms to create unique waveshapes. The sync input can be selected to Hard or Soft Sync and there is a separate Pulse Width Modulation (PWM) LFO within the Pulse waveform section that can ‘thicken’ the pulse sound. Having a number of these VCO, each with an individual PWM LFO, can create some very rich phasing type sounds.
EA2211 Multi Waveform Voltage Controlled Oscillator
The EA2211 is a logical enhancement of the original Emu 2210 Sawtooth Pulse VCO. Using the stable CEM3340 IC there are now 3 waveforms available via individual outputs. The INITIAL FREQUENCY is set via a precision 10 turn potentiometer giving quite a broad range. The SYNC IN input allows the VCO to be hard synced to create the classic sync lead sound.
In keeping with the original E-Mu design a KYBD switch allows each VCO to be connected to a KEY CV bus to negate the requirement for a patch lead.
Combined with the Triple Range Switch module a cost-effective bank of VCOs can be created.
EA2352 Dual Transient Generator
The EA2352 Dual Transient Generator is a completely new module based on the EA2351 DDTG but without the Delay function. The addition of selectable positive or negative outputs make it particularly useful for sweeping High Pass and Band pass filters with a negative envelope.
EA2351 Dual Delayed Transient Generator
The EA2351 Dual Delayed Transient Generator (DDTG) is a redesigned version of the E-mu 2250 module (the pictures show a DDTG fitted in a Tribute system and an early submodule). E-mu originally used a circuit with lots of components in the submodule. Later versions made use of the SSM2055 dedicated Transient Generator IC with improved performance. For the Pioneer system two CEM3310 type ICs are used along with the original delay circuitry.
EA2215 Triple Range Switch
The EA2215 Triple Range Switch is designed to be used with 3 VCOs, as shown above, to allow rapid range switching rather than using the frequency controls on the VCOs. The E-mu modular never had this facility. Normally the outputs are hardwired to the individual 1V/Oct inputs of the VCOs to negate the need for patch leads.
EA2411 Lag Processor
The EA2411 Voltage Controlled Lag Processor is a control voltage processing module.
With the shape control set to “linear”, the module acts as a slew limiter. Whenever the input level changes at a rate faster than the appropriate rate control setting, the output slew rate is limited to that maximum slew rate.
Highest accuracy is achieved in this mode, sufficient to use this module for voltage controlled keyboard portamento.
In the exponential mode, the module acts as a filter with time constant determined by the rate control settings. In this mode it can act as an attack/release transient generator with voltage controlled time constants.
The up and down rates are independently exponentially voltage controllable from 0.3 to 3000 Volts/second. The initial rate controls set the centre rates; the control inputs are attenuable and vary the rates at a maximum sensitivity of 2V/decade.
EA2421 Pot Pourri
(Dual Low Frequency Oscillator, Dual Invertor, Noise Source, Sample and Hold)
The EA2421 Pot Pourri is a new design, loosely based around the E-mu module. There are 2 Low Frequency Oscillators providing level adjustable triangle and square wave outputs, 2 Invertors (useful to invert transient generator outputs), a Noise Source, and a basic Sample and Hold. The Sample and Hold samples the Noise source at a clock rate determined by LFO2 but the clock input can be overridden by plugging into the CLK jack socket.
EA2522 Dual MIDI to CV Convertor
This unit uses 2 Oakley Modular Systems MIDIDAC MIDI to CV convertors and is normally connected direct to the Emu Bus line so that 2 CV and Gate lines are available. The MIDI channel for each line is internally selectable. This unit negates the need for an external MIDI to CV unit and provides some useful control voltage outputs. This unit was designed for my personal system but is available for both new Pioneer systems or for fitting to an original E-mu Modular.
EA2431 Ring Modulator
The EA2431 Ring Modulator is a slight redesign of the original E-mu module.
A Ring Modulator is a balanced modulator for electronic music. The module has two inputs, modulation and carrier, which are identical for high signal levels. The output is the algebraic product of the input voltages:
Vout = Vmod x Vcar / 5 when the input attenuators are fully clockwise and the coupling switches are in the DC position.
AC coupling will level-shift the corresponding input so it effectively centres around zero volts. This can have a striking effect on the output signal, due to the inherent non-linearity of balanced modulation.
EA2441 Voltage Controlled Low Frequency Oscillator
The EA2441 Voltage Controlled Low Frequency Oscillator is new module specifically designed to enable the classic Jarre type of variable LFO effects to be created. There are 4 selectable waveforms via a rotary switch that can also act as an OFF feature at positions either side of the 4 waveform positions. 1 of the outputs is full level while the other 2 outputs, one + and the other -, are via a dedicated VCA. In addition to the voltage control of the frequency the built in VCA enables the LFO to be switched in and out via a control voltage. (Note that if no input is applied to the LEVEL CONTROL jack socket there is a voltage supplied to feed the VCA via the LEVEL CONTROL potentiometer.
EA2905 Power Supply Front Panel
This module has the system on/off switch, power rail indicators, and bus connectors for the 2 keyboard bus channels. It links to a dedicated distribution board which in turn is linked to the back panel power supply.
This is a panel containing 8 rows of 4 linked jack sockets.