Thursday, May 9, 2013

Tech Tip: 70V output of the AV-20D


By: Yusuke Ueno
The MT-S0301 matching transformer allows for a 30W @ 70V output by connecting to the bridge output of the AV-20D. With this combination, the plenum-rated 70V amplification system can be achieved with a perfect plenum installation when installing the MT-S0301 inside of a plenum-rated speaker backcan, such as the HY-BC580U. The competitive plenum-rated compact amplifier still needs the external non plenum-rated power supply which must be installed outside of the plenum space. This system can therefore be a low cost solution with less installation fees and a less expensive 70V ceiling speaker such as the PC-580RU.