Pics of the Gilmore amp on 16 pin DIP sockets
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usc goose

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nice work
 
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rayofsi

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definately nice work
 
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post-779046
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Glassman

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oh that's terrible, but highly interesting
 
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post-779080
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Iron_Dreamer

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Quote:

Originally Posted by Glassman
oh that's terrible, but highly interesting



What's terrible about it? Seems like a pretty cool idea to me. Who needs a PCB
 
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post-779103
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was ist los?

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Wow, it's a rat's nest on the bottom. I hope nothing shorts. Wow that must have taken a while to come up with the layout and solder. However, i am such a sucker for p2p wiring these days. I do it so often myself.
 
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post-779811
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dip16amp

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It took a few hours to draw the layout from the schematic, then a few more hours to optimize and modify it. This is the sixth amp that I've done, (also have done the RA-1, Buffered Cmoy, Meta42, Pimeta, and PPA on sockets as shown on my web page) so it gets easier to do this with less errors in the process.
Soldering on the socket pins is less work than wiring on a proto board since the pins are firmly and evenly held in place and the solid 24 awg cat5 wire holds the sockets together. I keep the wire and solder above the shoulder of the pins so there is plenty of space between the soldered pins. Any wires that cross other pins or wires have the teflon insulation slid down the wire as I go on to solder it to the next pin. No problem with shorts. I use a wire list to make sure I get all the wires done on the right pins. It took me three hours to solder all the two and three pin wires (28 of them) and another three hours to do the last seven wires (four pin wires (2), seven pin wires (2), and ten pin wires (3)). Wire list is on my web page. It looks pretty crowded only after putting on the last few wires.
Anyways, this amp sounds really good with all my Grado headphones and I haven't gone back to any of my other amps for comparison yet. A balanced module can also be added to this later.
 
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post-780068
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Edwood

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That's awesome! Is the design modular?

I like your diagram. Heheh, point to point solid state.


Yes, do a balanced Gilmore next! Lots of pics, please.

-Ed
 
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dip16amp

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Each channel uses one of those unbalanced modules. I just added a pic of what the balanced add on module diagram looks like.
 
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post-780318
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was ist los?

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Are you sure this is harder than what you did?
 
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dip16amp

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I think it is easier to solder on the sockets because I don't have to worry about positioning the resistors and transistors as I solder. Plus I like to swap parts to tweak it after it's done. Same number of solder connections and I've got every connection numbered to the schematic for easy measurements. The small size is just an added result.
 
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dip16amp

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The balanced add-on module provides a balanced output from an unbalanced input. If you have a balanced input and want a balanced output, then you would use two of the unbalanced modules per channel and you then have a four channel amp.
 
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Glassman

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Quote:

Originally Posted by dip16amp
If you have a balanced input and want a balanced output, then you would use two of the unbalanced modules per channel and you then have a four channel amp.


there's no need to do that, it's the same situation as as for unbalanced input, the only difference is that you won't tie the inverting input to ground but to the negative part of the input signal.. Gilmore's frontend will sum the balanced inputs..
 
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dip16amp

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ok, that is easier. I just added the pic of the balanced module wiring. Since it adds another four sockets per channel for a total of 24 sockets per amp, the balanced DIP16AMP Gilmore is now the X24 version.
 
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groggory

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It might just be me...but seems like you've basically just built yourself a gold plated solderless breadboard. Cool stuff though.
 
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