807 SE project started....

JandG · 12th May 2009, 01:38 AM

This amp is going to be all parts from my closet type & what I have on hand. I am 1st to try the 27/6sn7-IT-807 combo shown in signal chassis, PS chassis is to be built now & will be very, very big & most likely on wheels..*s*. I would like it to be switchable between Pentode with regulated screens & UL. The OT's are Hashimoto H-20-7U 5K/7K & O'Netics IT's. I would like to direct couple the 27 to the 6sn7, then IT couple to 807's. Can anyone help me with Ideas on regulation of screen s& any genral info on 807's. I have read that they actually will take 450v in UL, I have never done screen regulation before & would like to see schematic or info on doing this, actually any ideas for the project are very welcome. Here is a pi of what I put togher so far. The direct coupling of 27 to 6sn7 is something I would like help with also for tips on how to do this properly, Thanks
Joe

JPeitzman · 12th May 2009, 04:49 AM

Sounds interesting, though I am curious why the 27 into the 6SN7 into the 807 through an IT? I am sure it would sound glorious but the 807 is a fairly easy tube to drive. I would bet that ½ of the 6SN7 loaded with a CCS would drive the 807. Then use the 27's in a nice line amp to drive the whole thing, parafeed maybe.

Just a though, but either way I will watch this develop, I have an almost unnatural love for the 807!

Cheers

James

Alex Kitic · 12th May 2009, 12:17 PM

Maybe it is superfluous or out of place, but if you love the 807 so much you could take a look at the RH807 as described on my website... might be worth the look.

So far I believe that this qualifies as one of the best implementations for SE 807.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
I've started my first project...	Bigun	Full Range	38	8th February 2009 01:15 AM
NEW class D amp project started today	h3ad	Class D	4	28th August 2008 02:40 AM
Getting started: choice of first project	schro20	Full Range	17	24th March 2008 09:47 PM
New project actually started ;)	inrank	Full Range	6	23rd February 2008 04:36 PM
Started my first speaker project!	ALFIrE	Multi-Way	18	23rd November 2004 11:57 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

12th May 2009, 04:49 AM	#2
JPeitzman diyAudio Member Join Date: Jan 2007 Location: Iowa	Sounds interesting, though I am curious why the 27 into the 6SN7 into the 807 through an IT? I am sure it would sound glorious but the 807 is a fairly easy tube to drive. I would bet that ½ of the 6SN7 loaded with a CCS would drive the 807. Then use the 27's in a nice line amp to drive the whole thing, parafeed maybe. Just a though, but either way I will watch this develop, I have an almost unnatural love for the 807! Cheers James

12th May 2009, 12:17 PM	#3
Alex Kitic Banned Join Date: Dec 2004 Location: Zemun	Maybe it is superfluous or out of place, but if you love the 807 so much you could take a look at the RH807 as described on my website... might be worth the look. So far I believe that this qualifies as one of the best implementations for SE 807.