Model 15 - a great sine wave just got better
2006-09-25 by (i think you can figure that out)
All, Along with the new M24 boards, the new rev. 1.5 Model 15 boards arrived today. Along with soe minor component placemnt changes, the 1.5's have some additional circuitry on the sinewave output which reduces the overall harmonic dstortion by approx. 1/2 of 1% (.5%) So an already noteworthy sine has just become a little more worthy of note! Go here for a comparison: http://www.ear-group.net/sinewavecompare.jpg In the next few days I be posting modification instructions for all who have rev 1.2 through 1.4 engine boards if wish to do this on your own. It requires one part replacement and three additional components which are relatively easy to install. For those of you with VCOs which has the expo boardlette, this change wil be a little more involved and I am considering making a small daughter board to incoporate this change. Keep your eyes on the EAR site for updates on this.