Home » Audio » Thermionic Emissions » Anyone tried other op points in Guinevere?
Anyone tried other op points in Guinevere? [message #9293] Fri, 21 October 2005 16:51 Go to next message
dhieber is currently offline  dhieber
Messages: 1
Registered: May 2009
Esquire
I've built the Guinevere as published. Has anyone tried other operating points for the 5687? What are your experiences? Thanks.

Dean

Re: Anyone tried other op points in Guinevere? [message #9294 is a reply to message #9293] Fri, 21 October 2005 17:34 Go to previous message
PakProtector is currently offline  PakProtector
Messages: 935
Registered: May 2009
Illuminati (2nd Degree)
Hey-hey!!!,
before I started building amps which wanted lower gain linestages I was happy with the 5687. I found a general trend that higher voltage combined with lower current made it sound a bit crisper. Perhaps in a thinner sort of way. It is a fairly subtle change, but fairly easy to spot.

Shoot for 80% of B+ and 3 mA. Keep in mind that an L-C supply is going to react differently at loads below critical current. Proceed with caution and a multi-meter, no?
cheers,
Douglas

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