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Old 20th January 2012, 04:36 AM   #11
ElCid79 is offline ElCid79  United States
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Thanks for all of the great information. Particularly the info on those starter kits. And your opinions on the books. I think some of the best info always comes from people who share similar interests. I just like to take things slow, study, read, then make a decision. It looks like its going to be a perfect hobby for me to start on. However, I was leery of dumping thousands of dollars into it before understanding if I even enjoy it. My plan is to build a basic one first. Then move on from there.

I have an extra set of Klipsch SF-1's sitting around that are pretty efficient. I "think" they will work. If not, I guess a DIY loudspeaker would be next. What are your thoughts?
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Old 20th January 2012, 01:44 PM   #12
DF96 is offline DF96  England
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Quote:
Originally Posted by taj
He's an engineer and uses an academic writing style
I disagree, I find MJ quite informal. Academic style would be quite different. A good writer, but not always clear when he is teaching accepted wisdom and when he is offering his own opinion.
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Old 20th January 2012, 01:53 PM   #13
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Audio Reality is a great book by Bruce Rozenblit. I took it out from my local library and read it. Lots of tube projects in it.

Highly recommended.

Audio Reality

It maybe hard to find, you might have to get the pdf version.
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Old 20th January 2012, 02:55 PM   #14
SY is offline SY  United States
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Quote:
Originally Posted by DF96 View Post
I disagree, I find MJ quite informal. Academic style would be quite different. A good writer, but not always clear when he is teaching accepted wisdom and when he is offering his own opinion.
Agree with all until the end. My impression was that he was pretty clear about opinion vs. accepted wisdom. Could you give me an example?

Some might be disappointed that he doesn't fly off into the land of mysticism, flowery descriptions, and pseudophysics.
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Old 20th January 2012, 05:58 PM   #15
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Originally Posted by DF96 View Post
I disagree, I find MJ quite informal. Academic style would be quite different. A good writer, but not always clear when he is teaching accepted wisdom and when he is offering his own opinion.
Thinking of MJ the best single term to describe him IMO: authentic (apart from his knowledge of course).
Every time I read his books I see him in front of me doing a lecture at one of the Triode Festivals.
Hope he will be there again next time (like a bunch of yanks...).
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Old 20th January 2012, 07:30 PM   #16
DF96 is offline DF96  England
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Quote:
Originally Posted by SY
Could you give me an example?
I think he is overly critical of the Mullard 5-20. He is mainly concerned by the driving capability of the phase splitter and the HF rolloff here, yet says nothing about the lower rolloff from the compensation network in V1 anode. On the other hand he misses one of the main snags with this circuit: the phase splitter needs V1 anode to be kept within a fairly close range of quiescent voltage so that the ECC83 is not pushed too near either grid cutoff or grid current.

I wouldn't want to put people off buying his book. I have v2 and v3, and awaiting your review of v4 with interest.
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Old 21st January 2012, 04:05 AM   #17
ElCid79 is offline ElCid79  United States
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I spent last night reading the tubelab simple p-p manual. I believe that that is going to be my first kit. i am working on setting up the parts lists, to find out how much its going to cost me. I do have one question though, and that is the power supply.

Can someone explain that to me? Thanks.
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Old 21st January 2012, 05:13 AM   #18
ElCid79 is offline ElCid79  United States
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and the output transformers....
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Old 21st January 2012, 06:13 AM   #19
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ElCid79,
pretty much exactly a year ago, I was in the same position as you are now. I was talking over beer with a musician friend (he's the musician, I can only 'play' CD...) about music and amplifiers and when he said he would loooove to have a tube amp, I said "I'll build you one". My mouth is still faster than my brain after all these years...
Now, you've got to understand that although at age 14 I started taking apart everything that had a power cord and had fixed a fair share of tube equipment in the years following, I had no formal training other than a school class or two on basic electronics.
So I found this forum, asked the same questions and got some very good advice. I ended up building the proven Tubelab SSE design with the board George sells. Ideal decision for me, I think. The instructions are very well written and VERY detailed and there is plenty of discussion on his site on which tubes and transformers work with his design. And there is a specific vendor sub-forum here for tubelab.

My strongest recommendation about good reading material: Read the thread on electrical safety here (and on tubelab.com), read it again, and then read it once more. Internalize and respect it. After having gained a couple of years since my teenage experiments and reading up on what it REALLY is about, I am really surprised I survived.... and I am not even joking. The SSE runs with a B+ of about 450VDC and I spent half the build time on making sure everything metal is properly grounded, given that I handed this over to my friend.

A year later, I built two more of Tubelab's SE amps with great success and a lot learned in the process (like, if it says 100K for a resistor, it's 100K and not 100R, can you hear it!?...). And I read MJ's book, which was a great refresher on the basics and a good intro to tube theory.

After a short diversion into the field of speaker building (Frugel-Horn), my next project will likely be a hand-wired amp of sorts.

Oh, and my musician friend relegated his high-end Denon SS amp to the basement after hearing the little amp that could (12AT7, EL34, UBT-2 OPT, ~6W). If you are curious how it turned out: Zenfolio | Stefan Sievert | SimpleSE

Anyway, sorry for the lengthy rant... GOOD LUCK, you will love the trip!!!
Have a great weekend everybody,
Stefan
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