Amp layouts

[jestaudio]

Can any one do a turret board layout from a simple scematic, i,ve obtained a knackered mesia which seems to cry out for being boogiefied into a mk1, got the schematics but am not that confident on translating it to a turret board

[10thTx]

If you will download ExpressSCH

http://www.expresspcb.com/expresspcbhtm ... ftware.htm

or J-Schem

http://dhost.info/jschem/

and then go to the Hoffman SCH Library of schematics:

http://www.el34world.com/Forum/index.php?board=12.0

You will find quite a few layouts by Tubenit. He draws with a paralleled turret layout design that is quite easy to follow.

Given 3 12A_7 tubes, I look at the layouts of the "Tweed BluesMeister" and then edit that layout to match what you're wanting.

http://www.el34world.com/Forum/index.php?topic=9498.0

or on AmpGarage try the "D-inspired" designs:

https://tubeamparchive.com/viewtopic.php?t=17500

or look at the Carolina Overdrive Special

http://www.el34world.com/Forum/index.php?topic=8387.0

Learning to do this for yourself will be an invaluable tool IF you plan to do amp builds for some yrs to come or your own innovative designs.

with respect, 10thtx

[Jana]

Yes, learn to do it yourself. Not being a smartass (although not being one is a challenge for me, lol).

Get a piece of heavy drawing paper at least as big as your chassis. Draw the chassis on it actual size with all the tube holes and everything else that is already there.

Gather up all the parts you will be using so you have them.

Study a lot of other good layouts--see if you can start to see a pattern.

Power supply is on one end, preamp is on the other end.

As you stare at the schematic, start laying out the parts and draw the various connections. Keep grid wires and other signal wires as short as possible. There will be some tradeoffs--If I move this part here, then wire A is shorter but wire B is longer. Grid wires and other high impedance wires get the shorter run.

Don't rush it. Do a layout, let it sit for a while. Sit and stare at it. Move a part or two to tweak things. Try it again.

Plan on taking a few weeks to do this. Seriously. Imagine where every wire will go. Question yourself, ask, is this the best place for this wire? Is this the best place for this part? It is a process--a mixture of art and science.

The best thing you can do for your learning process is learn to do this yourself. And, like any learning process, the first one won't be perfect. Nor will the second, or third. I've done about a hundred and am still striving for perfection.

[wsaraceni]

it's usually quite simple when you look at one or two. find a similar setup and start from there. they all are kinda the same. for example. for this amp. it would take me a while. as i've mostly been looking at single input single changel amps. but here is just a quick little bit i came up with.

[img764]http://img.photobucket.com/albums/v217/ ... daf63c.jpg[/img]

just keep adding to something like that.

i also agree with everything jana says. the first two amps i did i didn't layout the whole thing on paper. and it was a mess because of it. for my third amp, i actually took a blank set of turret board material and drew right on that. this was after i did my layout on paper (and it was a copied layout as well)

[img:764:1024]http://img.photobucket.com/albums/v217/ ... cdff4a.jpg[/img]

[Jana]

Be careful of drawing directly on the board material. If you use a pencil, the graphite is conductive. I don't know about ink but I would be careful anyway.

I draw on a piece of paper the actual size of the board. Once I have the layout, I tape it to the board and center punch the holes.

[wsaraceni]

good point. i drew on painters tape with sharpie so i should be fine.