JS Styled High Pass Filter, question.

[Dan025]

this might better represent how it goes together.

I apologize, but I'm not well versed on how to read those type of schematics.  I'm used to reading the ones from Seymour Duncan and Dimarzio.

don't apologize. i'm not sure if i'm trying to be too precise. i hope i'm not giving you doubts because i'm not sure if we are on the same page. here is a little more of a typical guitar circuit and it represented graphically not schematically. just to keep things clear.

On closer examination, a question comes to mind.  Mind you, I'm omitting the tone pot, so just 2 humbuckers, 1 volume w push/pull, a toggle, and the output jack are being used.

I noticed that you have the positive from the p/u selector toggle going to the switch on the pot.  Normally, as I understand it, it would go to the #1 pin (left lug) on the pot.  So, am I to presume that the resistor #1 (330K) is the jumper that routes the signal from the "up" position (Volume Cut), but when the knob is pressed "down" (Full ) all of these resistors are bypassed?

I'm just trying to understand "how" the routing works is all.

yes. the resistor allows a voltage drop before it gets to the pot. if it weren't for trying to keep the right load on the pickups that's all you'd need, the second resistor along with the pot itself help pull the voltage down and the final outcome is still a 500k load so the pickups shouldn't sound very different. i could have put the circuit after the pot but the reisistor values would have to be high to get a linear sounding control..

when you push the switch it shunts the resistor onto itself which uses less pins on the switch than redirecting, the resistor on the other side of the switch it taken out of the circuit when it is pushed.

 

[TonyFlyingSquirrel]

Very cool, thanks so much.

I'll let you know how it turns out next week, along with the chicken recipe'!

Also, I called Carvin, spoke with Albert/Tech who does all the set up work and asked him if they have an archived wiring diagram on the discontinued T-Mac (Tony Macalpine siggy).  He's gonna dig & see if he can pull one up & email it to me.

It'll be interesting to see the difference between the two, maybe I can come up with a setup that might work neat on an LP type of guitar with separate volume controls for each pickup, would yield some interesting options.

 

[TonyFlyingSquirrel]

I just installed it, and it didn't seem like enough cut, so I ran 2 of each value resistor in series, and it seems like it's in the sweet spot now.

It takes the compression out of my high gain tone & lets some SAG back into it, which is nice on occasion. Where it really shines is on a clean or tweed tone, the volume cut difference is much more noticeable, nearly half. I was playing around with it and found that by defaulting to the cut volume, I could use the normal mode as a solo boost just for clean stuff, but I doubt I'll use it in that application as much. Either way, fun experiment for my beater 7 string.

 

[Dan025]

I just installed it, and it didn't seem like enough cut, so I ran 2 of each value resistor in series, and it seems like it's in the sweet spot now.

It takes the compression out of my high gain tone & lets some SAG back into it, which is nice on occasion. Where it really shines is on a clean or tweed tone, the volume cut difference is much more noticeable, nearly half. I was playing around with it and found that by defaulting to the cut volume, I could use the normal mode as a solo boost just for clean stuff, but I doubt I'll use it in that application as much. Either way, fun experiment for my beater 7 string.

that works, but changes the pickup loading. but not "that" much. mental math is telling me you are still less than 1meg. glad you found something that works.

 

[TonyFlyingSquirrel]

You were a big help Dano.  Thanks again.

By the way, for anyone interested, I found Fry's to have most of what I was looking for.  Also found some Hammond 1590B Chassis to experiment with a stomp box idea, another thread though.