Blue_Lantern
Small, slightly blurry photo of a dark blue and gold Eurorack panel labeled CYDONIA FILTER, with a row of jacks, white knobs including SPREAD, REZ and VCA, red LEDs, two buttons and a large black knob.
BLM Cydonia Dual Filter, photo 1 of 1

Filters // Eurorack

BLM Cydonia Dual Filter

Bi-phase stereo dual filter, 12HP Eurorack. Draws +83mA / -77mA. From Blue Lantern Modules, Phoenix, Arizona.

$285.00
Format
Eurorack
Width
12HP
Current draw
+83mA / -77mA
Model
BLMCYD
Ships
Fully assembled, with its power cable
Stock
4 in stock
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About this module

BLM7200 DARPA project
Model: Cydonia Bi-phase Stereo VCF
width: 12hp
current: 83mA, -77mA

What does this module do?
The module has two filters, and two OTA-based VCAs. Most of the controls are setup to control both filters with one set of parameter knobs. There is a spread knob that separates the resonance peaks between both filters. You can get cool vocal and nasal filtering with careful adjustment. The filters self resonate. There is a trimmer for each filter which allows you to adjust how much feedback you want.
There is a fancy CMOS based logic control system to select the state variable outputs. DG412 modern analog switch is used internally. This analog switch is made for audio (-5v / +5). There is a 'reset' button to quickly go back to LP flavor.

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