Discrete Core Ladder VCF - Uncategorized ACL - Free user manual and instructions
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| Product Type | Eurorack VCF Module |
| Brand | ACL |
| Model | Discrete Core Ladder VCF |
| Format | 3U Eurorack, 8HP |
| Dimensions | 128.5mm x 40.3mm x 40mm (H x W x D) |
| Weight | 110g |
| Power Consumption | +12V: 50mA, -12V: 40mA |
| Power Connector | 16-pin Doepfer ribbon cable |
| Main Functions | 4-pole low-pass filter, resonance control, cutoff CV, audio input/output |
| Filter Type | Discrete transistor ladder (Moog-style) |
| Cutoff Frequency Range | 20Hz to 20kHz |
| Resonance | Up to self-oscillation |
| Control Voltage | 0V to +10V (1V/octave tracking) |
| Audio Input Impedance | 100kΩ |
| Audio Output Impedance | 1kΩ |
| Maximum Input Level | ±10V |
| Maintenance | Clean with a soft, dry cloth. Do not use liquids. |
| Safety | Use only within Eurorack case. Avoid short circuits. Do not expose to moisture. |
| Spare Parts | Contact your retailer or distributor for spare parts. |
| Warranty | Standard manufacturer warranty applies. Check with your dealer. |
| Country of Origin | Designed and assembled in Japan |
Frequently Asked Questions - Discrete Core Ladder VCF ACL
What is a Discrete Core Ladder VCF?
It is a voltage-controlled filter module for Eurorack synthesizers, using a discrete transistor ladder topology similar to the classic Moog filter.
What power supply does this module need?
It requires +12V and -12V from a standard Eurorack power bus. Current draw is approximately 50mA on the +12V rail and 40mA on the -12V rail.
What is the width of this module?
The module is 8 HP wide, which is about 40.3mm.
Can I use this filter with audio line-level signals?
Yes, the audio input accepts signals up to ±10V, which is typical for modular synthesizers.
Does the filter self-oscillate?
Yes, when the resonance is turned up high, the filter will self-oscillate, producing a sine wave output.
How do I clean the module?
Use a soft, dry cloth to gently wipe the front panel. Avoid using liquids or sprays.
Can I mount this module upside down?
It is recommended to mount the module in the correct orientation as indicated by the front panel lettering. Reversing may affect knob labeling.
What is the cutoff frequency range?
The cutoff can be swept from 20 Hz to 20 kHz, covering the full audio spectrum.
Is there a manual included?
A quick start guide is available for download on the product page. Detailed documentation may be provided by the manufacturer.
What type of CV does the cutoff accept?
The cutoff CV input accepts 0V to +10V with 1V/octave tracking, ideal for keyboard or sequencer control.
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