|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
66.177.177.194
In Reply to: RE: Now lets try Willie's 26 pre...... posted by vinnie2 on August 02, 2015 at 17:46:30
You have any of Rod Coleman supplies laying around?
My 26's drive a 2A3, I'll never go back....
Your cap is too small again, change to 1.5 or 2mfd
I would run the plate voltages lower, I think mine are between 140-150 at the plate.
The cathode cap is overkill as well, try around 68mfd.
You can get about 4v drive with less than 1% dist. Much better than the 27 schematic.
Follow Ups:
The thing aboutthe 27 is it is sooooo simple and it sounds pretty darned good. Of course i have not compared it to the 26 yet, so I may change my mind.
Vinnie,
I just received a quote from Rod for a couple of his regulators. Use the Bartola web site as suggested. A lot of the Inmates have used the Hammond 156C to load the 26 plates with good results...they are also relatively inexpensive.....
Stuben
Don't even know what they are, let alone have any. Is it some sort of voltage regulation?
Do you have a schem of your 26 pre you would be willing to post?
http://lyrima.co.uk/dhtreg/dhtRegIntro.htmlhttp://www.bartola.co.uk/valves/dht-filament-regulator/
My 26 drives a 2A3, its the same circuit your using, same cathode resistor, just a lower plate voltage. I'm using one of magnequests BC16 grid chokes just after the 26 for some extra magic.
Edits: 08/03/15 08/03/15
DITTO on the Rod Coleman regulator. Use a 3 stage model.
Eli D.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: