From AC coupling to DC coupling, is it that easy?

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

Help needed again..........
I was reading a printout of the desciption of Gary Pimm's 47 PP amp, very interesting and a bit difficult for me to understand. And also spending time here on the Asylum to find out what coupling caps I should upgrade to. (There are a brand named SideRealCaps in the amp right now, they look very much like the brand Kimber. BTW my choices stands between russian teflon, Jupiter Beeswax or Jensen Copperfoil). Then it suddenly, after a few days, stuck me why I don't make my amp DC coupled!!?? I have not a clear idea of how it works, but I have a spice program I can play around with. But this time I do not trust it.
Q1: If I in the ugly schematic below remove the caps C1 and C4, and raise the plate resistors R5 and R7 from 15K to 33K + add a little more heatsink on the CCS in the output then it works in DC coupling??? Spice program says so.
Q2: If the answer to Q1 is positive I can see two good things; it is cheaper not to have to buy capacitors, the sound of no capacitor should be better than with one. But are there any drawbacks?
Regards pufff

This post is made possible by the generous support of people like you and our sponsors:

Parts Connexion

Topic - From AC coupling to DC coupling, is it that easy? - pufff 04:00:56 01/2/04 (9)

One more new schmatic - pufff 06:17:47 01/3/04 (2)

Build it! - Allen Wright 06:25:32 01/6/04 (1)

Re: Build it! - yuppiiiiii! - pufff 15:50:50 01/6/04 (0)

Re: From AC coupling to DC coupling, is it that easy? - Joelt 06:57:25 01/2/04 (4)

Is this one ok? New schmatic. - pufff 14:51:52 01/2/04 (3)

Re: Is this one ok? New schmatic. - lampa 17:07:17 01/2/04 (0)

Re: Is this one ok? New schmatic. - Paul Joppa 16:29:41 01/2/04 (0)

Sorry, but there's something you haven't... - Allen Wright 16:20:04 01/2/04 (0)

Re: Not quite - Russ57 04:52:24 01/2/04 (0)

You can not post to an archived thread.