SoundMods wrote:
Well -- actually the output caps in the Threshold were polyester (mylar). The euro code was MKT. I looked at images on the WEB and the caps that I saw were the green Roderstein polyester caps with the MKT code. Roderstein polycarbonate caps have been typically color-coded red and their polypropylene caps have been color-coded blue.
Although mylars get the midrange right the treble can be strident and grainy. The only manufacturer producing equipment during that time, that I am aware of, that used polycarbonate coupling caps was John Curl designed Mark Levinson preamps.
Walt,
I think that Threshold changed the parts over time. I'll check when I'm home, but I think that the output caps in my preamp were 10uf ERO MKC, which I think are polycarb. I mistakenly said they were EPCOS caps in my PM - ignore that.
---Gary