Behringer 1005 Modamp Ring Modulator and VCA Eurorack Module

Featuring a period-correct all-analog signal path, the Behringer 1005 Modamp ring modulator and VCA module brings the clangorous sound of a classic ring mod circuit found on a legendary 1970s modular synth to the Eurorack format. This ultra-flexible module contains nine patch points for integrating into your modular rig. To generate the ring modulation, simply patch two VCO audio signals into the units IN A and IN B jacks and use the ratio and tune knobs to shape the behavior of the ring mod for fattening a signal or adding brash metallic overtones. Then output the module’s tune and ratio control voltages back to your VCOs and get ready for some modulated mayhem! And synthesists at Zoso Music enjoy the option of using the 1005 as a straightforward VCA in Unmod mode. Whether you’re new to Eurorack or a seasoned modular wizard, the Behringer 2500 series, including the 1005 Modamp, presents an affordable way to conjure up classic synths sounds with the convenience and flexibility of Eurorack.

FEATURES

• Classic 1005 analog ModAmp module from the '70s
• Authentic reproduction of the circuitry from the "2500" Series
• Consists of a discrete balanced modulator and VCA
• Balanced modulator accepts 2 input signals (DC to 20 kHz) and produces an output that is a multiplication of the two signals
• Creates complex waveforms with in-harmonic overtones
• 2 precision voltage outputs control the frequency of the VCO's that are typically connected
• Modulation is activated by illuminated push buttons (Mod and Unmod)
• In Unmod mode the signal at input A passes to the output without any modulation and the level is set by the Unmod Gain control
• Modulation can be switched on and off by trigger or gate signals which can be patched into the module
• VCA accepts the output from the modulator and modifies the output signal level according to the sum of the Gain control and external control voltages
• 2 external VCA control signals can be attenuated by front panel controls
• VCA mode can be selected as either exponential or linear
• Eurorack specs: 16 HP, XX mA +12 V, XX mA -12 V

SPECIFICATIONS

• Inputs In A / B
  - Type : 2 x 3.5 mm TS jacks, DC coupled
  - Impedance : 50 kΩ, unbalanced
  - Max input level : 10 V p-p
  
  
• Gate
  - Type : 1 x 3.5 mm TS jack, DC coupled
  - Impedance : 80 kΩ, unbalanced
  - Max input level : +12 V
  - Minimum switching threshold : +4 V
  
  
• Mod / unmod
  - Type : 2 x 3.5 mm TS jacks, AC coupled
  - Impedance : 50 kΩ, unbalanced
  - Max input level : +12 V
  - Minimum switching threshold : +4 V
  
  
• CV in
  - Type : 1 x 3.5 mm TS jack, DC coupled
  - Impedance : 100 kΩ, unbalanced
  - Max input level : ±10 V
  
  
• Outputs (Out)
  - Type : 1 x 3.5 mm TS jack, DC coupled
  - Impedance : 1 kΩ, unbalanced
  - Max output level : 10 V p-p
  
  
• CV A / B
  - Type : 2 x 3.5 mm TS jack, DC coupled
  - Impedance : 400 Ω, unbalanced
  - CV A Max output level : ±3 V
  - CV B Max output level : ±6 V
  
  
• Controls
  - Amplifier gain : -∞ to unity gain
  - Unmod gain : -∞ to unity gain
  - Amp control mode : 1 x sliding switch, Exponential / linear
  - Unmod / mod : 2 x button, LED backlit
  - In A / B : -∞ to unity gain
  - Ratio : ±3 V @ CV B output only
  - Tune : ±3 V @ CV A & CV B outputs
  
  
• Power
  - Power supply : Eurorack
  - Current draw : 60 mA (+12 V), 45 mA (-12 V)