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WawaWHUT? This is one confusing preamp!

#264
Under the heading of "grid leak bias" I see a triode stage with a normal plate resistor and isolating cap to the next stage. Grounded cathode and grid isolated by a cap with a very high value resistor to ground, value in the tens of megohms. That's what my memory produces but I HAS been a very long time.
 
#265
So I'm confused... Looking at the website, you can buy the preamp for $800, or you can buy a book on how to build it yourself for $35 worth of parts, including the price of the book?

Preamp design aside, I'm confused just by the business model.

And the warranty terms.



I don't think this product is going to be for me.
 
#268
@nbtone , following on from the discussion in the tube preamp design thread, can you confirm whether your preamp has a grounded mains cable? And does it carry the relevant safety certification?
When someone making and selling AC powered devices starts asking quite elementary questions about grounding, I get a little wary.
 
#270
nbtone said:
I told you I had a friend who was one. (an electronics expert) That enough for you? One person can't be anymore than what he or she is made up of. A lot of people pretend to be someone or something that they are not. $800 is not much money these days, anyway. Would you spend $800 for something you can't have, unless you scrounge and build it yourself, which might take months to complete? I know ... just do without and pretend a lot. Go to the studio with your head in the ying yang, so people will think different of you. Guess what, though, come Friday or Saturday when people want to see you in person, you can't give them anything close to what you promise on your recordings! Go figure!
Click to expand...

You are not doing yourself any favours here, unless your goal is to dissuade anyone from buying your product.

$800 is plenty for something that has been poorly demonstrated, poorly explained, and whose use has been so strictly limited by your bizarre insistence on string type and what have you.

Maybe if we were better mind readers we could understand your posts, but until that technology has been developed you'll have to trust us when we say we have no idea what you are trying to say in any of them.
 
#273
beans-on-toast said:
You're kind of late. The show is over and everyone went home six months ago. :laugh:
Click to expand...
Well actually what happened was someone contacted me and told me to try out their new Tube Bass Preamp. Said I could send it back if I didn't like it. Then said they wanted me to endorse it if I kept it. :-) Yes I'm late but better informed.
 
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#279
First of all: hello to the spam patrol! I know this post will permanently ban me from talkbass, but it is time to answer to all the weirdness one more time.
Yeah I had to hire a safety engineer to get all the issues with Nitewalker Bass Preamps sorted out. There were spacing problems on one of the circuit boards, and there was no safety ground. I reinforced the enclosure, so that the front panel isn't so flimsy anymore, and I added a plate in the tube access area to prevent any hazards when changing the tube, due to the placement of a new circuit board. Other than that I had to resolder all the solder connections and make use of heat shrink tubing on every one of them, and I had to make everything look clean and sanitary. I replaced the faulty circuit board and added another. The safety ground issue took a whole lot of effort, and several talkbass people, in spite of all the banter, guided me to some extent. I don't use any solid state parts in my tube circuits, other than the rectifiers, and I have successfully made use of a 6.3vac filament supply. There is no bothersome hum. I don't do politics, but I think a whole lot of arbitrary laws are being made that benefit the electronics workplace and are destructive to the music workplace. .... Just saying. The 6.3 vac filament supply uses half the current that a 12.6vdc supply uses. That's reading at the wall plug, by the way. (Lower power bills, anyone?)
I first manufactured these in 2008, and the laws are a lot different now. I researched this in 2008, and I hired a respectable electronics company in the U.S. To design and manufacture the enclosure and the circuit boards. I assembled everything, and now I'm reassembling them. There is still a lack of quality bass amplification choices, so I'm still making preamps. I had a good sounding amp in 1966 from the 1950s, but when I needed a louder one I found that none of them were any good. Fifty years later the choices are no better, unless you use a Nitewalker Bass Guitar Tube Preamp. That is my perspective.
 
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#280
How does using a 6.3v supply use less current and/or less power than a 12v supply? I think you have your Ohm's law formulas inverted.

Sorry, the safety rules/laws/regulations haven't changed in any significant way between 2008 and now.
 
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