TAI-4 - Synthesizer Vermona - Free user manual and instructions
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USER MANUAL TAI-4 Vermona
Modular systems are just amazing. They are whatever you want them to be, as you are the one who's responsible for the number and kind of installed modules. It can be either a simple monophonic synthesizer or an extremely complex sound- and effect machine.
The TAI-4 is an audio interface for your modular system that brings the internal audio signals out of the system as well as external audio sources into the modular system. We are aware of the fact that many modules already have audio in- and outputs, so what's the reason behind making a special module with this functionality?
Each of the TAI-4s in- and output channel uses an audio transformer that galvanically isolates and balances the audio signal. Thus potential ground loops were prevented, the signal stays clear of electro-magnetic interferences. The TAI-4 should be the module of choice whenever you need to handle high-quality audio signals.
We are proud to welcome you as VERMONA TAI-4 user. Enjoy the module and be happy whenever using it during music production and performances.
Your VERMONA team
HDB electronic GmbH
Badesteig 20
08265 Erlbach
GERMANY
Phone: +49 37422 25 30
Fax: +49 37422 23 97
Email: info@vermona.com
http://www.vermona.com
Installation
The TAI-4 is compatible to eurorack modular systems and has to be connected to the A-100 system bus for operation.
Follow the safety instructions and warnings stated in your A-100s manual when installing the module.
Before installing the module be sure to disconnect the modular system from mains!
- Connect the 10-pin connector on the TAI-4s rear to the ribbon cable that comes with the TAI-4. The color marked stripe on the cable is oriented to the bottom. (see illustration 1)
- Connect the other end of the ribbon cable to the 16-pin connector on the eurorack style power distribution board of your modular system. The colored stripe has to be oriented to the negative 12 volt supply line (bottom).
- Use the screws that came with your TAI-4 to mount the module into the modular frame.
- Now connect the modular system to the mains and switch it on.

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TAI-4 VERMONA Audio XF-25 VERMONA Audio XF-25 SZ-3X 10PV VNOREA SZ-3X 10PV VNOREA ribbon cable -12V system busIllustration 1: Connecting the TAI-4 to the system bus
Control Surface Features
Input Section
The input sections features two identical input channels.

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3 2 1 VERMONIA +12 dB +6 dB 0 dB OUT LEVEL IN +12 dB +6 dB 0 dB OUT LEVEL IN(1)
IN
balanced female XLR input
(2)
LEVEL switch with CLIP LED
With this switch you can set the appropriate input level.
If it is set to "0dB" the channels output level equals the input level. Settings "6dB" and "12dB" increases the level by the corresponding value.
The CLIP LED indicates too high input levels. The signal doesn't distort as soon as it illuminates, there is still some headroom.
(3)
OUT
unbalanced 3,5mm jack output
Output Section
The output section features two identical output channels.

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IN LEVEL OUT IN LEVEL OUT TAJ-4 transf rmer-isolated AUDIO INTERFACE 4 5 6(4)
IN
unbalanced 3,5mm input jack
(5)
LEVEL switch with CLIP LED
With this switch you can decrease the input level.
If it is set to "0dB" the channels output level equals the input level. Settings "-6dB" and "-12dB" decrease the level by the corresponding value.
The CLIP LED indicates too high input levels.
(6)
OUT
balanced male XLR output
Specifications
| Input Section | |
| Frequency Range 20Hz - 20kHz (±0,5dB) | |
| max. Input Level +12dBu (600Ω) | |
| max. Output Level (jack) +22dBu (600Ω) | |
| Amplification +6dB / +12 dB | |
| Output Section | |
| Frequency Range 20Hz - 20kHz (±0,5dB) | |
| max. Input Level (jack) +22dBu (10kΩ) | |
| max. Output Level +12dBu (600Ω) | |
| Reduction -6dB / -12dB | |
| Audio Properties | |
| Signal-To-Noise ratio >90dB | |
| THD+Noise < -80dB | |
| Product Properties | |
| Power Consumption 20mA | |
| Measurements 3HE, 14TE | (70,8mm x 128mm x 56mm) |
| Weight 320g | |
Declaration of Conformity
We declare under our sole responsibility that this product is in conformity with the following standards or standardization documents in attention of operation conditions and installation arrangements acc. to operating manual:
EN61000-3-2, EN 61000-3-3, EN 55013, EN 55020, EN 60065 according to the provisions of the regulations 2004/108/EG and 2006/95/EG.
HDB electronic GmbH
Badesteig 20
08265 Eribach
Telefon 037422/2530

Dipl. Ing. Lothar Dietrich