Awesome site!

swilkes · 1st January 2008, 04:34 PM

Hello everyone!

I am a bass player/EE that is just starting to get deep into
tubes. I have the Kevin O'Connor TUT books and am
preparing to build my first tube amp.

My main focus right now is getting tetrode/pentode models to work in LTSpice so that I can vary the screen voltage to musical
instrument amp levels and see how the Ip/Vp curves look. The
12AX7 triode I did using the Munroe model worked beautifully.

I'm working with Koren, Munroe, and Rydell models. I've gotten
Dmitri's curve painter to work and also Andrei's Curve Captor
to work (wish it did pentodes). I found Teodoro's Excel app
but haven't figured that one out yet.

Tetrodes/pentodes I'm interested in are KT88, 6550, 6L6, EL34,
and 6V6. Also want to do an SV572/160 monster some day.

I presently have designed a PCB for a MOSFET regulated power supply that is "programmable" via stacked zeners to supply Vp,
Vs, Vd, and 2 preamp voltages. I'm getting ready to go thru the
PCB fab process. I'll let you know how it turns out.

Glad I found you guys.

Conrad Hoffman · 1st January 2008, 07:21 PM

Welcome! Sounds like you're already having lots of fun. There are certainly some very knowledgeable tube people here, though I'm not one of 'em. A tube is something like a warm glowing FET but with nicer curves and a see-thru outfit, right?

Cal Weldon · 1st January 2008, 09:39 PM

Hello and welcome to the forums.

1st January 2008, 04:34 PM	#1
swilkes diyAudio Member Join Date: Jan 2008	Awesome site! Hello everyone! I am a bass player/EE that is just starting to get deep into tubes. I have the Kevin O'Connor TUT books and am preparing to build my first tube amp. My main focus right now is getting tetrode/pentode models to work in LTSpice so that I can vary the screen voltage to musical instrument amp levels and see how the Ip/Vp curves look. The 12AX7 triode I did using the Munroe model worked beautifully. I'm working with Koren, Munroe, and Rydell models. I've gotten Dmitri's curve painter to work and also Andrei's Curve Captor to work (wish it did pentodes). I found Teodoro's Excel app but haven't figured that one out yet. Tetrodes/pentodes I'm interested in are KT88, 6550, 6L6, EL34, and 6V6. Also want to do an SV572/160 monster some day. I presently have designed a PCB for a MOSFET regulated power supply that is "programmable" via stacked zeners to supply Vp, Vs, Vd, and 2 preamp voltages. I'm getting ready to go thru the PCB fab process. I'll let you know how it turns out. Glad I found you guys.

1st January 2008, 09:39 PM	#3
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Hello and welcome to the forums. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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1st January 2008, 07:21 PM	#2
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	Welcome! Sounds like you're already having lots of fun. There are certainly some very knowledgeable tube people here, though I'm not one of 'em. A tube is something like a warm glowing FET but with nicer curves and a see-thru outfit, right?

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