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XR1-E

Ring Modulation Oscillator

Analog Effect Device  

 

Berlin 2013

 

  
  The 

XR1-E

 is an analog ring modulator device with fixed sinus/triangle ring modulation 

oscillator, suitable for both instrument or microphone input. 

The oscillator pitch is adjustable by manual control over a wide range. In addition, the 

frequency can be modulated by the integrated envelope follower (the oscillator pitch 
changes dependent from the volume of the input signal)  and LFO (low frequency oscillator) 
as well as by an external CV signal or pedal. Original and effect signal are miscible by 
controller, but  the 

XR1-E 

 also provides a footswitch input for external switching between 

effect and original. Further, the ability of battery operation makes the instrument 
independent from external power. 

The 

XR1-E 

is based on an ancient function generator chip, which I am using since many 

years for musical purposes due to its warm and smooth sound.

              

Low noise high impedance preamp

Ring modulation oscillator frequency range:

High: 18Hz – 18000 Hz

Low: 0.15Hz – 120Hz

Envelope follower and LFO for frequency modulation

Frequency CV input (1V/oct adjustable), also suitable for pedal use 

Optional footswitch control

Output attenuator switch

Battery operation or external DC power supply (wide voltage range: 6-15V)

Power dissipation: ca 600mW

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Summary of Contents for XR1-E

Page 1: ...are miscible by controller but the XR1 E also provides a footswitch input for external switching between effect and original Further the ability of battery operation makes the instrument independent f...

Page 2: ...By turning the Carrier Surpression pot while listening to the oscillator tone adjust the tone to its minimum 0 on the scale you may also use the green LED for indication Adjust the Preamp input gain c...

Page 3: ...ltage for instrumental amplifier inputs etc Instrument Input Input jack for instrument or microphone Impedance ca 2M max input voltage 3 5Vpp Preamp Gain Control Adjustment of the amplification of the...

Page 4: ...ing modulation oscillator Frequency is from 0 06Hz left position to 44Hz right position The LFO frequency is also displayed by the orange LED for easy visual confirmation LFO Modulation Depth Control...

Page 5: ...5V voltage via 10k resistor is provided on available on the middle connector of a 3pole jack plugged in Thus may be useful for example in combination with a sensor or a pedal In the latter case a comm...

Page 6: ...ls C or M is 0V the output R will be also 0V Note In the case of the XR1 E the carrier signal is or provided by the internal oscillator Examples Input modulator signal frequency oscillator carrier fre...

Page 7: ...Circuit Diagram 7...

Page 8: ...Support Christian G nther Forster Str 50 10999 Berlin cg mandalamat de Phone 49 30 61286299 Mobile 49 178 7699267 www cg products de Christian G nther 2013 8...

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