Dave Smith Instruments DSM01 Curtis Filter

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Dave Smith DSM01 Curtis Filter

The legendary Curtis filter is a staple of the Dave Smith sound. Now, Eurorack synthesists can assimilate the Curtis’s bold, puissant tone into their patches.

The Curtis is a resonant low-pass filter that can be switched between -12 dB and -24 dB, where it is easily driven into self-oscillation. The DSM01 combines the Curtis with CV’able frequency and resonance controls, and an additional Boost switch that allows one to overdrive the input signal for some forceful sonic assertion.

But the DSM01 includes much more than the Curtis filter under its panel: the module boasts a handy VCA—complete with LED indicator—and two individual outputs. One output serves as a pre-amplifier and the other as a post-amplifier, allotting extra flexibility for signal routing and allowing other VCAs to be freed for different tasks.  

The DSM01 is a quick, cost-effective way to bring the much-desired Dave Smith sound into your Eurorack setup

DSM01 Curtis Filter Features

  • Frequency & Resonance Controls
  • VCA, Frequency & Resonance CV Inputs
  • -12 to -24 dB Slope Switch
  • Boost On/Off Switch
  • Audio Input
  • VCF Output
  • VCA Output
  • Eurorack Module
  • 27mm Depth
  • +12v: 36mA Current Draw
  • -12v: 25mA Current Draw
Product Demo Videos
54HP Episode 6: Bass Monster
“Bass Monster” is the sixth 54HP case and it is built to be a traditional subtractive synthesizer voice with a few extra tricks. Instead of an analog noise generator the VCNO can generate multiple noise sounds to be added with the oscillators or used for percussion sounds. The mixer, filter and extra VCAs all have boost and saturation effects for adding dirt and distortion, or boosting line to modular levels the way the Volca Beats is boosted in the video. The multiple envelopes and VCAs can also be used to generate drum sounds or do amplitude modulation or analog FM. To finish the Case off is the DPLR which is an interesting dual delay with an adjustable filter and crosstalk for many different delay sounds.

Module List:
Hexinverter VCNO
Intellijel Dixie II+ x2
Manhattan Analog DTM
Frequency Central CEMvelope x2
Dave Smith Curtis Filter
XAOC Tallin

Available here: https://www.perfectcircuitaudio.com/catalogsearch/result/index/?q=54hp+Series+Bass+Monster&product_list_order=brand
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