Sewastopol II - Synthesizer Xaoc - Free user manual and instructions
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| Type | Eurorack Synthesizer Module |
| Width | 8 HP |
| Height | 128.5 mm (3U) |
| Depth | 35 mm |
| Weight | 100 g |
| Power Supply | +12V / -12V via Eurorack bus board |
| Current Draw | +12V: 60 mA, -12V: 60 mA |
| Inputs | 2x balanced XLR/TRS combo jacks (stereo), 2x 3.5mm TS (direct) |
| Outputs | 2x 3.5mm TS (stereo out), 1x 3.5mm TS (envelope follower), 1x 3.5mm TS (comparator gate) |
| Main Functions | Stereo analog interface, balanced signal conversion, envelope follower, comparator with adjustable threshold, signal normalization |
| Envelope Follower | Generates envelope CV from audio input with adjustable response |
| Comparator | Outputs gate when input signal exceeds set threshold |
| Signal Level | Line level (up to +20 dBu) |
| Controls | Volume knob, threshold knob, response switch (slow/fast) |
| Indicators | Power LED, signal present LED, gate LED |
| Maintenance | Clean with dry cloth; avoid moisture and solvents |
| Safety | Use only in a closed Eurorack case with adequate power; prevent short circuits |
| Repairability | Contact Xaoc support for service; no user-serviceable parts |
| Compliance | RoHS, CE |
| Origin | Poland |
| Warranty | 2 years limited |
Frequently Asked Questions - Sewastopol II Xaoc
What is the Sewastopol II?
The Sewastopol II is a stereo analog interface for Eurorack modular synthesizers. It provides balanced XLR/TRS inputs and outputs, an envelope follower, and a comparator for processing external audio signals.
How do I connect external gear to the Sewastopol II?
Use the balanced XLR/TRS combo jacks for line-level sources like mixers or audio interfaces. Alternatively, use the 3.5mm TS inputs for direct connection from other modular gear.
What is the envelope follower used for?
The envelope follower extracts the amplitude envelope from an audio signal and outputs a control voltage (CV) that can modulate other parameters, such as filter cutoff or VCA amplitude.
How does the comparator work?
The comparator compares the input signal level to a user-adjustable threshold. When the signal exceeds the threshold, it outputs a gate signal that can trigger events like drum hits or envelope generators.
What are the power requirements?
The module requires +12V and -12V from your Eurorack bus board, drawing approximately 60 mA per rail. Always check your case's power capacity before adding modules.
Can I use the Sewastopol II with a microphone?
No, the Sewastopol II expects line-level signals (up to +20 dBu). A microphone would require a preamp to bring the level up to line level before connecting.
The envelope follower seems slow. How can I adjust it?
Use the response switch on the front panel: 'fast' for percussive sounds, 'slow' for longer decays like pads. Also adjust the input level and threshold for best tracking.
What does the 'normaling' feature do?
The normaling internally connects the left input to both channels when nothing is plugged into the right input, allowing mono operation without an extra cable.
Is the Sewastopol II suitable for guitar?
A guitar's output is too low; you need a DI box or preamp to bring it to line level. Alternatively, use a dedicated instrument input module.
My gate output is staying high. What's wrong?
Check the threshold setting: if it's too low, even noise can trigger. Also ensure the input signal is not constant (e.g., a sustained synth pad). Adjust the threshold knob and try a dynamic source.
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USER MANUAL Sewastopol II Xaoc
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Product information
Brand : Xaoc
Model : Sewastopol II
Category : Synthesizer