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The LP40 is a low pass filter based around the SSI2140, the successor to the legendary SSM2040. The 2040 is the best sounding filter chip that came out of the 19070s and the 2140 takes the original design and adds CV controlled Resonance. The LP40 is a small format filter that does not cut corners.
The Input is set up like the Dual SeM20, when the indicator line is straight up the input is at full, anything past that will over drive the input. The Frequency CV responds to both positive and negative voltages while the Resonance CV is 0-10V. The LP40 will track 1V/Oct with internal temperature compensation.
There are 3 output types and 4 outs; 12 and 18db have one output each and there are 2 24bd outputs. While using the 24db output you can take the second and send it to the HP40 to create a variable band width Band Pass while still using the 24db Low Pass.
The LP40 is an exceptionally versatile filter capable of smooth and creamy basses and with a turn of the resonance pot it becomes dripping acid.I have wanted to make a 2040 based filter for many years and to be making the LP40 with chips from the original manufacturer is something bubblesound is very proud of.
Specifications
- Width: 4hp
- Depth: 24mm
- Power: +21mA / -50mA