You will have more than enough to drive the amp to full power with a DAC (provided it doesn't have a passive I/V converter), just add a volume pot at the input after your source selector switch.
That makes sense, but it sounds a crude way of doing it.
I was thinking along the lines of doing the pre amp from the same book, but altering it for modern needs.
I was thinking along the lines of doing the pre amp from the same book, but altering it for modern needs.
You will have way to much gain with an active preamp, all you would be doing is adding noise and distortion to the amp. I have the same book and the sources back in the day put out mV signals so gain was important. Today not so much.
Okay that clears that one, a passive preamp maybe? Or would it really just be best to put selectors and a pot straight on to the 5-20?
I did a passive preamp with my monoblocks.
If you are building both channels into one chassis and you have the room I don't see any reason why not to include them in it.
And I want to say the circuit sounds great, very accurate with plenty of power on my Klipsch La Scala's. People have had to pick their jaws up off the floor.
If you are building both channels into one chassis and you have the room I don't see any reason why not to include them in it.
And I want to say the circuit sounds great, very accurate with plenty of power on my Klipsch La Scala's. People have had to pick their jaws up off the floor.
Thank you,
Going to go for two monoblocks and a passive pre amp then. Would like to try and do it one chassis but think this may be pushing it.
My company did a few of theses as a rarity and I have seen nothing but good things about them. Seems like it will be an interesting build, and I can't wait to hear it.
Going to go for two monoblocks and a passive pre amp then. Would like to try and do it one chassis but think this may be pushing it.
My company did a few of theses as a rarity and I have seen nothing but good things about them. Seems like it will be an interesting build, and I can't wait to hear it.
You are welcome 🙂
For best results you will most likely have to tweak the feedback comp cap for the specific transformers you are going to use.
Is your company Matamp? I believe they hail from England and I have seen them make a beautiful looking 5-20.
For best results you will most likely have to tweak the feedback comp cap for the specific transformers you are going to use.
Is your company Matamp? I believe they hail from England and I have seen them make a beautiful looking 5-20.
An externally hosted image should be here but it was not working when we last tested it.
Yep, I am an electronics Tech by trade and never had an opportunity to work for an audio manufacturer. But this is my keen interest in electronics.
This is the company I have just started with? How did you work that out? TBH all of their gear looks amazing I just wish I understand the theory side more.
And it was Jeff that recommended me the "mullard book" hence I want to do a 5-20. We spoke briefly about it earlier.
Never seen that pic before but it does look beautiful.
A "dick" is a private detective around here. I was just making a joke about my detective skills 😉
Honestly I don't know how I put that one together.
How is the design process going? Are you still going with PCB's?
Ah okay, that now makes sense.
I would love to see the internals of the that amp, that is one finish I have not seen yet.
Well I got a rough price for the components, but not sure if that would mean building it point to point or maybe PCBs.
That picture you posted just looks amazing to the ones I have seen and from what I hear they sound amazing.
One thing I would like, but others may not agree is some analog VU meters. And I would like modern protection on the amp too over voltage/current, short/open load protection etc.
Like I have mentioned my theory is not up to scratch. But I know what I have worked with in the past and know what I would want.
I would love to see the internals of the that amp, that is one finish I have not seen yet.
Well I got a rough price for the components, but not sure if that would mean building it point to point or maybe PCBs.
That picture you posted just looks amazing to the ones I have seen and from what I hear they sound amazing.
One thing I would like, but others may not agree is some analog VU meters. And I would like modern protection on the amp too over voltage/current, short/open load protection etc.
Like I have mentioned my theory is not up to scratch. But I know what I have worked with in the past and know what I would want.
Think the design process will take a while if I am honest. But if I could use that design and add my requirements it seems like a very promising amp.
Thinking along the lines of mains conditioning built in to it along with so many other ideas. Never built one from before instead I have always purchased. And the biggest upgrade I fount was using a BT mains conditioner.
It is going to be an interesting and meaningful project.
Thinking along the lines of mains conditioning built in to it along with so many other ideas. Never built one from before instead I have always purchased. And the biggest upgrade I fount was using a BT mains conditioner.
It is going to be an interesting and meaningful project.
Mullard type driver circuit PCB using 6EJ7/EF184 instead EF86.
Classic Valve Design - Dynaco Clone and Original Design Boards
Classic Valve Design - Dynaco Clone and Original Design Boards
Thanks for the info, but would like to do it myself for the learning experience rather than buy a clone.
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