Any RH807 builders?

Klimon · 29th May 2007, 10:11 PM

I'm wondering if the RH807 has enough driver gain to use it as a stand-alone (integrated) amp. Checking the schematics both rh84 and rh807 omit a volume control although (apart from the loss of gain through the feedback loop which I've got no idea about how to calculate) driver voltage swing seems more than enough to drive the output tube. Quick reference for 807 gives about (I plan to run them on higher plate voltage) 30V peak-peak requirement for the driver, ecc81 should provide about 60V IIRC.

Simon

Klimon · 31st May 2007, 03:27 PM

Schematic:

http://www.tubeaudio.8m.com/807/807.html

Simon

bucurb · 31st May 2007, 04:16 PM

hello everybody,
pay attention, please!
above web address presents serious danger ...

Shoog · 31st May 2007, 08:56 PM

Mine would work nicely as an integrated amp.

Quote:

above web address presents serious danger ...

Care to say why. It worked for me without issue - but I do run Linux.

Shoog

es44 · 31st May 2007, 09:17 PM

bucurb isn't all wrong. I tried, and POW, drivecleaner popped up, telling me that I'm having porn on my computer.
Funny thing is, that i've only just installed Windows after changing harddrive, and i haven't had a chance to visit some of the "dirty" sites yet

Shoog · 31st May 2007, 09:20 PM

No porn from that site, could very well be the popups it creates. Fortunately Firefox kills those dead. God I'm glad I don't use IE7 (or whatever it is now).

Shoog

Klimon · 1st June 2007, 07:14 AM

Quote:

Mine would work nicely as an integrated amp.

Got that

Simon

29th May 2007, 10:11 PM	#1
Klimon diyAudio Member Join Date: Apr 2005 Location: Leuven	Any RH807 builders? I'm wondering if the RH807 has enough driver gain to use it as a stand-alone (integrated) amp. Checking the schematics both rh84 and rh807 omit a volume control although (apart from the loss of gain through the feedback loop which I've got no idea about how to calculate) driver voltage swing seems more than enough to drive the output tube. Quick reference for 807 gives about (I plan to run them on higher plate voltage) 30V peak-peak requirement for the driver, ecc81 should provide about 60V IIRC. Simon

31st May 2007, 04:16 PM	#3
bucurb diyAudio Member Join Date: Sep 2004 Location: Bucharest	web address having problems hello everybody, pay attention, please! above web address presents serious danger ...

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31st May 2007, 03:27 PM	#2
Klimon diyAudio Member Join Date: Apr 2005 Location: Leuven	Schematic: http://www.tubeaudio.8m.com/807/807.html Simon

31st May 2007, 09:17 PM	#5
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	bucurb isn't all wrong. I tried, and POW, drivecleaner popped up, telling me that I'm having porn on my computer. Funny thing is, that i've only just installed Windows after changing harddrive, and i haven't had a chance to visit some of the "dirty" sites yet

31st May 2007, 09:20 PM	#6
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	No porn from that site, could very well be the popups it creates. Fortunately Firefox kills those dead. God I'm glad I don't use IE7 (or whatever it is now). Shoog

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