RYO - Ampmix - DIY Full Kit

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60,00 €
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in stock, immediately available

  • Model:
    [RYOAMPMXKIT]
  • Manufacturer: RYO - Ljunggren Audio



An easy to build 4-channel amplifying mixer/attenuator with 2.0x gain (6dB) and 5.0V offset on each channel in an 8hp module. No calibration required.

Ampmix was designed as a handy CV mixer and processor with good precision, high input impedance and buffered outputs. It could be upgraded for even better precision as described in the assembly manual.

It will also work great with audio, even with full gain giving some distortion possibilities or gaining external gear.

It works as a 4 channel mixer,
1 attenuator + 3 channel mixer,
2 attenuators + 2 channel mixer
or 4 attenuators.
With up to 2.0x gain (6dB) on each channel.

If you chain channels you can get greater gain. You can chain any combination of channels it doesn't have to be in the described order.
Patch signal to IN1, OUT1 -> IN2 and OUT2 have 4x gain (12dB) total.
Continue with OUT2 -> IN3 and OUT3 have 8x gain (18dB) total.
Continue with OUT3 -> IN4 and OUT4 have 16x gain (24dB) total.

An offset voltage is generated then normaled to the inputs of the 4 channels, giving them a maximum of 5V out each with knobs turned full clockwise (2.0x gain). Please note that these offsets will affect the mixing if the channel hasn't been patched on its input or output, so turning all unused channels fully counter-clockwise/left (off) is advisable for a clean mix.

The Ampmix Kit is a novice-friendly project, it is a low part count, single-PCB build that only requires the most basic experience in PCB soldering and module assembly. Kits comes supplied with PCB, front panel (PCB material), component kit, knobs, power cable and mounting screws. Solder and tools are not supplied.

Note! Building these DIY kits happens on your own risk. We can't do support or give a guarantee for correct function, because that depends on your own skills. Be responsible and check the building instructions before you buy. Thank you!


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