General

[djost]

I have an old Basie line only preamp that has the wood front panel. Currently, I am using three 12AU7's, but I also have two GE 5963 tubes and a Westinghouse 12BH7A that I received with my kit many years ago. I would like to try the 2 5963 tubes and 12BH7A tube, but have missed placed my manual and do not remember which position the 12BH7A goes in. Facing the front of the Basie with position 1 being left, 2 being middle and 3 being right, could someone please tell me which tube socket the 12BH7A goes in?

Thank you.
Doug

[vinylkid58]

Is this it?

http://www.dms-audio.com/sites/defau...basie-srpp.pdf

Jeff

[djost]

That appears to be it. Looks like the 12BH7A (or E80CC) goes in the first position to the right of the rectifier tube.

Thanks.

[vinylkid58]

The pdf came from this page: Basie SRPP + Basie Mk2 | DMS Audio

The 12BH7 is for the cathode follower position shown in the bottom left schem.

Let us know how it sounds with the new tubes.

Jeff

[djost]

Currently, listening with my "emergency" set of 12AU7's (old set of Telefunken's). When I turn everything off tonight, I'll insert the GE 5963's and Westinghouse 12BH7A tubes. Then, tomorrow night I can listen with the new set (wife and daughter will be out) and will post what I think.

For a point of reference, my current setup consists of :
Welborne Labs DRD 2A3 mono blocks (built from kit);
DIY HIFI Basie I preamp (built from kit);
Eastern Electric Minimax Phono stage (was going to build a kit, but wanted instant gratification);
Linn Axis turntable/Basik Plus arm with Grado Master cart;
Klipsch LaScala speakers (ALK xovers, Crities tweeters);
ACI Maestro XL subwoofer (with external amp);
And, a really, really, really old Rotel CD player;

Just for the record, the "emergency" set of Telefunken's sound pretty good. Very open and dynamic.

[nampi]

Hi everybody!
I'm looking for capsules for a Neumann TLM103 and a Rode K2... unluckily they both got spoiled
Anyone can help me to find a good place to get them??
Thanks!!

[djost]

Have been listening to the GE 5963's and Westinghouse 12BH7A tubes in my Basie I for several days. Compared to the Telefunken's 12AU7 tubes, the 5963/12BH7A combination sounds recessed and distant. The bass seemed to be a little stronger and the highs on some music seemed a little more realistic. But, again things seemed to be muted compared to the Telefunken's.

I'm not good at putting into words what I hear. And, I'm not a music/stereo reviewer. But, to my ears, with my stereo, the Telefunken 12AU7 sounds warmer, more dynamic and clearly sounds "better."

[IDM]

Hi

I have a LD+ MK2 and I am playing with different driver arrangements and am considering the use of a C3M pentode like in the Legacy amplifier. However, I think this driver needs about 30mA to get it to work properly and am concerned that the LD transformer might not be sufficient.

I bought the amplifier partially built from the bargain bin at DIY Hifi supply and I seem to recall Brian saying that it had uprated transformers. Certainly when I took the cover off it is not torroidal. It is a large standard frame transformer with alot of laminations painted black with black tape over the windings. Unfortunately there is no writing on the transformer to identify it.

Could someone please advise me of the HT current capacity of the transformer.

Cheers
Ian

P.S. I am aware that I will have to arrange a 20V heater supply for the C3M.

[ThorstenL]

Hi,

Originally Posted by IDM

Could someone please advise me of the HT current capacity of the transformer.

I recall the original LD Transformers where rated around 200mA, giving 140mA DC limit (in theory anyway). The current range should have retained these ratings.

So 30mA Driver and a 300B at 80mA should be no issue.

Ciao T

[IDM]

Thanks Thorsten. I really appreciate you getting back to me.
Cheers
Ian