Sunday, December 28, 2014

Curiouser and curiouser

My new Patch of Shades is not like my "old" Patch of Shades, it turns out. Somewhere between the manufacture of PoS #45 and PoS #103, the design changed quite a bit. Different circuit board, different IC layout, possibly different ICs, different input and output jacks, though we may never know if the chips are DIFFERENT, since the early models have sanded off part numbers for the key chips. The chips on #103 are NOT sanded.
#103 arrived pretty much non-functional, but only because the pressure pad was not working. As readers of this blog may know, pressure pads are something we know a little about. However, the pressure pad on #103 was totally unlike that described in previous blog posts
It was, in fact, more similar to what I originally thought the PoS pressure pads were like, before I took my first one apart. The intertwined fingers circuit board was the same, but the contact surface was indeed like the piece of magnetic tape I imagined when I first got my PoS. However, it was completely non-conductive, infinite ohms at all points. I called my friend Yona (lightatplay.net). He suggested checking the circuit board by shorting it with tin foil, and he also mentioned graphite being used as a variable conductive material. The foil completely shorted the circuit, but, by taking a #1 pencil, and coating the plastic sheet with the black paint on it with graphite, I was able to return the pressure pad to functionality. I erased some of the graphite, and I also added some paper padding to lift the plastic away from the circuit board, and put some foam padding above it, to make more pressure necessary to manipulate the sound.

The new PoS is still a little overly sensitive, but a few more tweaks and it ought to be dialed in perfectly. In fact, now that I know about the graphite effect, I am going to reopen my #45, and make that pad a little more sensitive as well. I may also add some padding to it, too, for easier articulation.

Wednesday, December 17, 2014

Fergus Marsh

Yesterday my multi-year saved search in eBay alerted me to the presence of an ACTUAL Patch of Shades. It had a buy-it-now of $300, so I bought it now. I guessed that the owner had no idea what previous Patch of Shades had sold for on eBay. I bought mine for $520. The next one, purchased by audities.org, a museum of electronic music rarities, fetched $1200.

 What I didn't know was that the seller was none other than Fergus Marsh, brother of Hugh Marsh, and Bruce Cockburn's stick player in the 1980s! I flipped when I saw who I had Paypalled money to on my bank statement this morning. I emailed him, and he sent a very sweet reply, even telling me which "Brucie" songs he had used the effect pedal on.

I wrote: "Holy Wow!!!!! You're Fergus Marsh?!?!?!? As in, played stick with Bruce Cockburn? I am not a big follower of stick, but you are my absolute FAVORITE stick player. Thanks so much for all the gorgeous sounds over the years!! David"

Fergus replied: "Hey David, thanks for the kind words. Just to let you know, i used the patch of shades on a couple of Brucie tunes. Down where the death squad lives was one of them. I used a flanger in the loop that engages with the wah effect. It was pleasingly nasty. ( on the bass end of the stick) Hope you enjoy it. Ferg"

 Wow!