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In Reply to: RE: 8200 Scratchy Volume Control. posted by Noskipallwd on January 23, 2018 at 10:37:03
Oops! I almost forgot, speakers are a kit from Madisound, BK-20 Fostex based folded horns. The 8200 drives these with no problem.
I'm in the process of building the smaller BK-12's. I run stereo subs. Once they're done I'll upgrade my speakers with Mundorf and Van Den Hul and Cardas and whatever is needed. The 8200 has no problem driving them, I nearly plumped for Tekton Lore Reference's they seem to get good reviews and are super efficient.
The amp runs hot no matter what tubes I am using, I'm not concerned with that. I figure they call them Thermionic valves for a reason. I have a 15w Otl power amp that uses 12 tubes total and keeps the room toasty while in use! I think you will like the BK-12ms, I had these and sold them to a friend when I built the BK-20s. They sound great and with your subs you should have good coverage. The Fostex full-range drivers require an extended break-in period, they are pretty harsh and shouty out of the box. A nice gentleman gave me a painless method; place the speakers face to face somewhere out of the way(spare room, garage etc.), say about 8" apart. Wire one out of phase with the other. I used a chip amp and my PMP set on a loop to play continuously. Threw a blanket over them and left them alone for about 4 days, which took the edge off considerably. Sounds crazy but it works, and nobody had to listen to it.
Thanks. It doesn't really run hot with 6L6GC's and EL34's. I can run it for a very long time. I use the very high tech method of back of my hand. Yes, I read that the Fostex's are rather harsh. Thanks for the advice. I was going to place them face to face under a blanket in the garage connected to my old Marantz receiver, I'll try your method. I like the sound of pure silver and initially was going to wire them internally with solid silver in PTFE insulation (DIY) but after reading that they are glary I opted for DH Labs Silver Sonic 14AWG speaker cable. I'm associated with wire harnessing (auto and appliance and a bit of electronics), I mess around quite a bit with wiring. Biggest shock was discovering that my B&W's used such crappy wiring inside and after changing a few things they were different speakers - Bass was there. My son commented "what happened to the bass?"
I built a Diy Headphone cable out of pure silver, but found it to be overly bright for my taste. I have gotten good results using Mil-spec silver plated copper though.
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