- Posted by John Q on October 29, 2004 at 00:30:20
In Reply to: Re: FS-007 posted by MQracing on October 28, 2004 at 18:21:27:
Mike.
Thanks for all info about 007.I not decided which tube I can use.
The 71A is not a option I needed minimum 8-10 Watts.
For 845 I have 10K James so here no plan for low voltage.
Only tube in my stash is 814 wired as triode and push 007 hard
at 75mA.Based on my test 814 Rp will be around 1600 Ohms in this
area under 600V on plate.
I needed test 814 with CCS on cathode with adjustable B+ to found
amplification factor and few more things.
Max G2 voltage from datasheet is 400V but here no data for audio.
Similiar 828 has audio data with G2 max 750V.
May 814 will handled 600V as triode who know.
Regards,
John
Follow Ups:
- Re: FS-007 - Jeff Lessard 06:34:03 10/29/04
(4)
- In Reply to: Re: FS-007 posted by John Q on October 29, 2004 at 00:30:20:
Why don't you try a 807 in SE.
Gordon published a really nice circuit in Sound Practice no.2. If I remember well, the PDF of this amp and the now famous Bugle were available at some time on his web site (or did I imagine it?).
I've heard Gordon's 807 and liked it a lot. Plus the purple glow of the OD3 it does use is so cool.
- Re: FS-007 - John Q 08:49:41 10/29/04
(0)
- In Reply to: Re: FS-007 posted by Jeff Lessard on October 29, 2004 at 06:34:03:
Jeff.
Reason it's simple I have 7 NOS RCA 814 and not even one 807.
Why not try unknown tube :> )))I have no problem with this.
John
- The bugle was a 45 design... - Bas Horneman 08:05:44 10/29/04
(2)
- In Reply to: Re: FS-007 posted by Jeff Lessard on October 29, 2004 at 06:34:03:
but here is a link to the article
To infinity and beyond!!!
- Re: The bugle was a 45 design... - Jeff Lessard 08:14:00 10/29/04
(1)
- In Reply to: The bugle was a 45 design... posted by Bas Horneman on October 29, 2004 at 08:05:44:
Yes, I was just mentioning the Bugle for the record. But reading my post again, I must confess it does read weird.
Did you ever saw the PDF of the Sound Practice article on 807 SE amp I am referring too? Or did I just imagine seeing it online?
- I can't remember specifically the 807 pdf.. - Bas Horneman 07:03:00 11/01/04
(0)
- In Reply to: Re: The bugle was a 45 design... posted by Jeff Lessard on October 29, 2004 at 08:14:00:
but Gordon did mention the article in SP a couple of posts below....
Regards,
Bas
To infinity and beyond!!!
- I can't remember specifically the 807 pdf.. - Bas Horneman 07:03:00 11/01/04
(0)
- Re: The bugle was a 45 design... - Jeff Lessard 08:14:00 10/29/04
(1)
- Re: FS-007 - John Q 08:49:41 10/29/04
(0)
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