System X Filter 2.0

Frequency Central proudly announce the release of the ‘System X Filter 2.0’. It’s a clone of the Roland System 100M VCF, and uses 2 x LM13700. There’s an additional 12dB/oct output as well as the 24dB/oct output.

First up, classic 24dB/oct LPF. The two VCOs are my Hearn Morley HMVCO1c, there is a little -1oct subosc added as FM of the VCF towards the end of the clip:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Roland-12 1-24dB-LPF.mp3

Next, the 12dB/oct LPF output, again a touch of subosc FM towards the end:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Roland-12 1-12dB-LPF.mp3

Finally, by inverting one and mixing both 12dB/oct and 24dB/oct outputs to achieve phase cancellation we get bandpass:

http://www.frequencycentral.co.uk/wp-content/uploads/2012/07/Roland-12 1-Bandpass.mp3

Apologies for the meandering nonsense keyboard playing!

Module width: 10HP
Module depth: 65mm
Current draw: +10ma/-10ma

Price: £160 GBP plus shipping

For orders and queries please contact me at:

[email protected]