Forbidden Planet - Keyboard Tiptop Audio - Free user manual and instructions
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| Product Type | Eurorack Synthesizer Module |
| Model | Forbidden Planet |
| Brand | Tiptop Audio |
| Function | Dual Band-Pass Filter with Voltage Control |
| Width | 8 HP (40.3 mm) |
| Depth | 25 mm (excluding power cable) |
| Height | 3U (128.5 mm) |
| Weight | Approx. 80 g |
| Power Requirements | +12V: 40 mA, -12V: 20 mA |
| Power Connector | 10-pin Eurorack ribbon cable (reverse polarity protection) |
| Audio Inputs | 2 (IN A, IN B) via 3.5 mm jacks |
| Audio Outputs | 2 (OUT A, OUT B) via 3.5 mm jacks |
| Control Voltage Inputs | 2 (FREQ CV, RES CV) via 3.5 mm jacks |
| Frequency Range | 20 Hz to 20 kHz (adjustable via knobs and CV) |
| Resonance | Self-oscillation capable at high settings |
| Manual Control | FREQ and RES knobs |
| Construction | PCB mounted pots and jacks, aluminum front panel |
| Cleaning | Use a dry cloth; avoid liquids and abrasives |
| Safety | Do not expose to moisture; disconnect power before installation |
Frequently Asked Questions - Forbidden Planet Tiptop Audio
What is the Tiptop Audio Forbidden Planet module?
The Forbidden Planet is a dual band-pass filter module for Eurorack synthesizers, offering independent or series operation with voltage control over frequency and resonance.
What are the power requirements?
It requires +12V at 40 mA and -12V at 20 mA via a standard 10-pin Eurorack ribbon cable.
How do I connect the module to my Eurorack case?
Connect the 10-pin ribbon cable to the module and the case power bus, ensuring the red stripe aligns with the -12V indicator on both ends.
Can the Forbidden Planet self-oscillate?
Yes, at high resonance settings it can self-oscillate, producing a pure sine wave output.
How many audio inputs and outputs does it have?
It has two audio inputs (IN A, IN B) and two audio outputs (OUT A, OUT B), each via 3.5 mm jacks.
What is the frequency range?
The frequency range is approximately 20 Hz to 20 kHz, adjustable via the FREQ knob and CV input.
Is there a manual available?
Yes, the manual is available for free download on notice-facile.com in PDF format.
How do I clean the module?
Use a dry, lint-free cloth to wipe the front panel. Avoid using liquids or abrasive cleaners.
What is the depth of the module?
The module depth is 25 mm (excluding the power cable), which fits most Eurorack cases.
Can I use the Forbidden Planet with guitar or line-level signals?
Yes, but you may need to attenuate the signal to Eurorack levels (typically 10V peak-to-peak) to avoid distortion.
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