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Vintage threads from the first ten years

New and Improved Matchless schematic section...

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8/2/2000 6:39 AM

New and Improved Matchless schematic section...

With August being "Matchless Month" I thought I better celebrate the occasion with newly added drawings from Mark Sampson himself. For a real treat unzip the dc30fact.zip file and check out the drawing in full color... Might make nice wallpaper for your Windows desktop!

http://www.ampage.org/blueguitar/schems.htm#Matchless

--Enjoy!

Steve Ahola

8/2/2000 9:09 AM
Craig D	Thanks again Steve. Great site. Craig

8/2/2000 8:12 PM
Dr Rico	Thanks again for your efforts. This is good stuff. I have a D/C-30 and am trying to get to know her better. Boy-o-boy do I get howling "ghost notes" when I crank her! (Not cone cry...I get it with other cabs). Thinking of upping the power supply filtration a bit. Hasta -> Rico

8/4/2000 1:31 PM
Ethan	I had one that did exactly the same thing, I thought it was a parasitic. It sounded like you were playing thru a off key harmonizer when cranked- Ethan

8/5/2000 4:44 AM
Dr Rico	Soooo...what did you do?! I'm tempted to yank the electrolytics and drop in some new ones...maybe increase the filtering a tad. Zoiks! Rico

8/5/2000 4:51 AM

I had a DC-30--didn't use it much at the time and sold it right before the prices skyrocketed. Kick myself in the ass. Anyway, I hear alot of complaints about them ghosting.

Anyway, instead of replacing them. I would just try to put a cap in paralell with the first cap and see if I liked the change. I believe it's recommended not to go over 60uF on a GZ34. 33uF is the original value, try adding a 16-20uf in paralell and give that a listen. Maybe add a little down the line. Easist way to start without drastically changing anything.

bw

8/8/2000 3:12 PM

I sold it!!! Unfortunately it was about 3 years ago, a clean HC 30 head/cab for $1350. Wish I held onto it, coulda got about 3K now. Looking at the pics of HC-30 chassis in another thread, I'm glad I didn't try to work on it, looks like a hassle. It would be interesting to clip a few caps (w/double gator clips) onto the existing ones to see if that helps, might save some work. A freind suggested low quality EF86 tubes can cause this, not sure I believe it but it's worth a shot, esp. if they're Sovteks.

Ethan

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