MusicMan Silent Circuit

[Angel LaHash]

trying to understand what is and if i can get one

i googled it and got this
Protection-Mute-Circuit-Diagram.gif
Dam google and its key words some times.. its 12:30AM for me .. im half a sleep sorry about that Line6Man
Also think what i trying to ask about has been talked about in the BIG DEBATE on Musicman guitars so i think i make a foot up there

i think its basicaly a coil to give a single coil more oomf
i dont know what a ESP-SP1 is
I think if it is just a COIL, would i need to make a coil that is shielded from the strings
that will sum up the Henrys, if i wanted to just sum up the resisters i could just add one in its place
i figured as the Pick up is about 13KOhms that it would need to be about 2250m of 42AWG copper all wrapped around its self
but shielded away as said above..could easy put it to one side and cuts own holes with wires coming out.
woudli need a core in the middle of it.. or could i just use a bit of plastic say



Talk about tone controls here
3PDT Pop:
http://myweb.ecomplanet.com/town8019...ompage0019.htm

[line6man]

I'm not sure what this is about, but that schematic shows something that would not be put on a bass.

[SGD Lutherie]

The Ernie Ball circuit is a dummy coil with a buffer preamp. It's purpose is to get rid of hum, not to give the pickup more oomph.

This is from the patent application. In this diagram, the coil on the left, 202D, is the dummy, and the coil on the right, 212D is the pickup.The output from the preamp actually passes through the pickup.



I actually have one of these that was removed from a guitar.

[walterw]

i remember the guitar versions as working pretty well, at the price of making the guitar sound "active".

if you pulled the battery out it still worked, but just had hum.

[line6man]

Originally Posted by SGD Lutherie

The Ernie Ball circuit is a dummy coil with a buffer preamp. It's purpose is to get rid of hum, not to give the pickup more oomph.

This is from the patent application. In this diagram, the coil on the left, 202D, is the dummy, and the coil on the right, 212D is the pickup.The output from the preamp actually passes through the pickup.



I actually have one of these that was removed from a guitar.

It's a bit funny to me that they would want to get opamps and batteries involved, but end up not buffering the audible pickup. That circuit provides an output impedance similar to that of a standard passive pickup (No values are specified, but you can tell by looking at it), so you get all the usual problems associated with a higher (complex) impedance AND all of the usual downsides of having a battery onboard. What's the rationale behind this?

[Angel LaHash]

Thank you SGD Lutherie
http://www.patentgenius.com/patent/5569872.html
if any one can fill in the blanks or direct me to where i could buy one (as normal for most Low Budget) i guess making it will give a skill and could do it if needed it again

also sorry if ive repeated any thing in this post.. been on a few posts and clicked on links that are dead


Was just looking up other things Ernie Ball Patented
http://www.patentgenius.com/assignee/ErnieBallInc.html

[SGD Lutherie]

Originally Posted by line6man

It's a bit funny to me that they would want to get opamps and batteries involved, but end up not buffering the audible pickup.

That's to stop it from sounding buffered. So they put the circuit on the ground end. They also load the dummy coil to simulate the load on the pickup