RE: Pentode lover

RE: Pentode lover

Posted by rtsang (A) on February 14, 2009 at 07:28:34

In Reply to: RE: Pentode lover posted by lovetube on February 14, 2009 at 06:04:47:

The problem with using zener is the noise from a current starved zener. Guys over in diyaudio helped me out and I was able to kill off must noise.

Here is the schematic. Note that the PX4 is operating over the spec, slightly. I really should have get the KR version of the tube, as it can handle a plate dissipation of 20W.

I tried the PX25, it just do not sound as good as a PX4. For guys here in the asylum who are more North American, the tips is that many DHT and DH rectifiers from Europe sounded as good as WE products but much cheaper. Worth a try. You will be suprised.

Raymond

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Follow Ups Full Thread

Topic - Pentode Driver Comparison 6C6, EF37, 717A, etc. - SomeJoe 16:45:13 02/13/09 (17)

there's many other good ones... - PakProtector 06:19:04 02/14/09 (0)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - rtsang 20:06:57 02/13/09 (15)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - SomeJoe 05:12:26 02/14/09 (0)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - lovetube 02:59:04 02/14/09 (13)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - RC Daniel 15:44:52 02/14/09 (3)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - lovetube 18:39:31 02/14/09 (2)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - RC Daniel 14:25:07 02/15/09 (1)

CV1043/VR53/EF39 - coresta 14:12:18 02/16/09 (0)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - rtsang 05:13:32 02/14/09 (8)

me too . here is the red colour that I like about the EF37a - lovetube 18:44:00 02/14/09 (0)

RE: Pentode Driver Comparison 6C6, EF37, 717A, etc. - lovetube 05:35:49 02/14/09 (6)

Plate voltage and plate resistor - rtsang 08:31:45 02/14/09 (0)

Pentode lover - rtsang 05:47:04 02/14/09 (4)

RE: Pentode lover - lovetube 06:04:47 02/14/09 (3)

RE: Pentode lover - rtsang 07:28:34 02/14/09 (0)

Pete Millett 829 Amp - SomeJoe 06:29:55 02/14/09 (1)

Pete Millett E-Linear amp too - PakProtector 07:39:48 02/14/09 (0)

Follow Ups

RE: Pentode lover - rtsang 07:28:34 02/14/09 (0)

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