Search found 4206 matches
- Wed Oct 03, 2007 8:36 pm
- Forum: Beginners
- Topic: Mains |TX wiring Help
- Replies: 11
- Views: 10705
- Wed Oct 03, 2007 6:55 pm
- Forum: Beginners
- Topic: Mains |TX wiring Help
- Replies: 11
- Views: 10705
OK, primary first, looks like you want pin 7 = live and 11 = neutral for UK operation. Next up we'd need to know what you want out of the it? Looks like you can get 270-0-270, for HT, similarly 50-0-50 etc. You've also got various combo of 6.3v and 5v etc for heaters. Looks like quite a versatile be...
- Wed Oct 03, 2007 6:34 pm
- Forum: CD
- Topic: Computer Audio
- Replies: 363
- Views: 200515
That's about it, but you need to buy a NAS that supports SlimServer, use EAC to rip to FLAC (I do two copies, a VBR MP3 for the icrap and FLAC for the SB). I use the NLSU2 which is dirt cheap but marginal in the speed dept, very marginal. I think other suggestions have been made, however, which may ...
- Mon Oct 01, 2007 9:33 pm
- Forum: Valves
- Topic: 6EM7-6DN7-6GL7 Familly
- Replies: 16
- Views: 16180
Good explanation, Nick. One of the best videos I ever saw and a good example of this, was how the Canadians, during lulls in serious ice storms, use a helicopter to clear the ice of power lines so the pylons don't collapse under the weight of the frozen water hanging off the lines, when the pylons g...
- Mon Oct 01, 2007 8:41 pm
- Forum: Assorted Stuff
- Topic: Transformer quote.
- Replies: 6
- Views: 5250
If you plan to DC heat then I reckon there's no issue, or if your AC heating a rectifier valve as in Philip's question, then again, you're going to rectify anyway so noise isn't an issue. Sure, in any TX that shares a dual primaries, one for heating and the other for B+, then the noise will still be...
- Mon Oct 01, 2007 8:35 pm
- Forum: Everyones Projects
- Topic: Son of 6EM7 Heaven
- Replies: 46
- Views: 32363
I use Linear's LT Spice, again a link from Duncan Amps, Google should find it.Nick wrote:When I want to be neat, I use the schema drawing part of expresspcb
http://www.expresspcb.com/
I have a set of valvie symbols that you can add to it. I think its from Duncans amp pages.
cheers,
-- Andrew
- Mon Oct 01, 2007 8:19 pm
- Forum: Assorted Stuff
- Topic: Transformer quote.
- Replies: 6
- Views: 5250
Sorry, just got it, you've got dual secondaries. Are you using the 12v for heaters? I think mixing heater and rectified B+ can cause problems, Nick and I found at his place that the noise from the rectifiers was getting capacitively coupled back into the secondary and appearing a grunge on the other...
- Mon Oct 01, 2007 8:15 pm
- Forum: Assorted Stuff
- Topic: Transformer quote.
- Replies: 6
- Views: 5250
- Mon Oct 01, 2007 1:14 pm
- Forum: Everyones Projects
- Topic: Son of 6EM7 Heaven
- Replies: 46
- Views: 32363
I'm unable to phrase a counter argument, to Nick's point, perhaps due to lack of understanding, I need to digest this some more. I will say this might be a case of the pentode's missing gain :oops: The LCR remains on the shelf for the time being as being a step too far! However, I'm hoping understan...
- Mon Oct 01, 2007 11:44 am
- Forum: Everyones Projects
- Topic: Son of 6EM7 Heaven
- Replies: 46
- Views: 32363
I did parafeed once .... why should it be that much better ? Andrew the 1st. I'm not saying it better, its just something I've been wanting to try really. With 6EM7 you need to have a largish cap on the cathode bypass, say 47uF on the Barker/Kaufman design. I had an idea to try a constant current s...
- Sun Sep 30, 2007 9:17 am
- Forum: Everyones Projects
- Topic: 6AS7 Push Pull
- Replies: 261
- Views: 164393
- Sat Sep 29, 2007 5:55 pm
- Forum: Everyones Projects
- Topic: Son of 6EM7 Heaven
- Replies: 46
- Views: 32363
Excellent. I have a pair of OPT on the way from the good Mr Slagle, I have IXCP10M45S via Buddam from Digikey, I have the bits for C4S and some cheap 6uF caps for parafeed duty. If I don't like parafeed I can restack the OPT to take DC at the expense of some inductance, or so I am told. I hope to co...
- Sat Sep 29, 2007 10:42 am
- Forum: Valves
- Topic: D3ap pentrode Drive 2A3
- Replies: 7
- Views: 7264
Bit more of everything, higher mu, higher gm, higher miller, higher anode dissapation and higher cathode current. I was very impressed with the lack of any colouration at all in Nick's anode follower; they sounded good in the LCR, but not quite enough gain when compared to the E810F. I suspect its s...
- Sat Sep 29, 2007 8:59 am
- Forum: Valves
- Topic: D3ap pentrode Drive 2A3
- Replies: 7
- Views: 7264
- Wed Sep 26, 2007 9:54 pm
- Forum: Everyones Projects
- Topic: PT15 push pull
- Replies: 30
- Views: 23940
-- Philip, My take is.... Have you found your ideal valve the one you like the sound of, (tho' I have to say there's no perfection just a series of suitable compromises) if not then, yes, go-ahead build/lashup/knock together/ and generally build whatever takes your fancy as cheapy, or as well, as yo...