Based on the good experience with the AMS1000 module I decided to build two stereo amps based on the samller AMS0100 modules. These modules are in use now for my mid- and high- frequency channels.
Here is the technical data from the manufacturer site:
- 2x50Wrms into 4Ω @ 1% THD
- 120Wrms BTL into 6Ω @ 1% THD ·
- Patented AMS (adaptive modulation servo) amplifier technology
- 100kHz load independent frequency range (-3dB)
- Almost flat THD vs frequency
- 115dB dynamic range
- Output impedance <10mΩ from 20Hz to 20kHz
- Differential inputs with 0.1% resistors for improved CMRR
- Automatic voltage doubler for universal mains
- Meets ErP and Energystar
- UL recognized
- CE approved · +/-14V AUX outputs
- AUX output for third hanger channel
AMS0100-2300 manual here….
The AMS modules are the successors of the ALC modules. Comparison of the THD figues made me curios. High frequencies seem to have lower THD:
Here are some pics of my built:
For the enclosure I choose again the Galaxy Maggio Rato GX287 230×170 mm (1NGXA287N). In the line to the LED of the on/off button I inserted a resisitor similar to the other ams I built since it was way to bright. With a resistor of 27K, which is hidden in the shrinking tube at the switch, the LED just glows.