Sour Grape switch positions

[Ale_jellybelly]

Sometimes my ears deceive me
What positions on the Sour Grape EQ mids switch are full, flat and scooped?


middle (off position) is full i guess?

 

[Feral Feline]

The following does NOT take into account C16 1µ...

	CONNECTED LUGS	COMPONENT VALUE	ADJUSTED PARALLEL VALUE
SWITCH UP	LUGS 2+3	R20 1k5	1k5 + 27k = 1k4
SWITCH CENTRED	NC	R18 27k	27k + 0k0 = 27k
SWITCH DOWN	LUGS 1+2	R3 3k9	3k9 + 27k = 3k4

Parallel Resistor Calc used: https://www.1728.org/resistrs.htm


Punching the above results into the TSC CALC (which is not able to factor in C16's 1µ):


TOGGLE UP




TOGGLE MIDDLE




TOGGLE DOWN





So...

Up = scooped;
Middle = bass-boost
Down = flat(ish)



I WOULD PREFER:
UP=BUMP
MID=FLAT
DN=SCOOP

Fortunately, I'm far enough along in my DIY-journey I can have it like a Burger King, my way.

 

[Ale_jellybelly]

That was the impression I am getting by listening as well, thank you @Feral Feline !
The bass/mid boost sounds the best to me

 

[PAGOON]

The following does NOT take into account C16 1µ...

	CONNECTED LUGS	COMPONENT VALUE	ADJUSTED PARALLEL VALUE
SWITCH UP	LUGS 2+3	R20 1k5	1k5 + 27k = 1k4
SWITCH CENTRED	NC	R18 27k	27k + 0k0 = 27k
SWITCH DOWN	LUGS 1+2	R3 3k9	3k9 + 27k = 3k4

Parallel Resistor Calc used: https://www.1728.org/resistrs.htm


Punching the above results into the TSC CALC (which is not able to factor in C16's 1µ):


TOGGLE UP
View attachment 108797



TOGGLE MIDDLE
View attachment 108798



TOGGLE DOWN
View attachment 108799




So...

Up = scooped;
Middle = bass-boost
Down = flat(ish)



I WOULD PREFER:
UP=BUMP
MID=FLAT
DN=SCOOP

Fortunately, I'm far enough along in my DIY-journey I can have it like a Burger King, my way.

What program is that FF?

 

[PAGOON]

The following does NOT take into account C16 1µ...

	CONNECTED LUGS	COMPONENT VALUE	ADJUSTED PARALLEL VALUE
SWITCH UP	LUGS 2+3	R20 1k5	1k5 + 27k = 1k4
SWITCH CENTRED	NC	R18 27k	27k + 0k0 = 27k
SWITCH DOWN	LUGS 1+2	R3 3k9	3k9 + 27k = 3k4

Parallel Resistor Calc used: https://www.1728.org/resistrs.htm


Punching the above results into the TSC CALC (which is not able to factor in C16's 1µ):


TOGGLE UP
View attachment 108797



TOGGLE MIDDLE
View attachment 108798



TOGGLE DOWN
View attachment 108799




So...

Up = scooped;
Middle = bass-boost
Down = flat(ish)



I WOULD PREFER:
UP=BUMP
MID=FLAT
DN=SCOOP

Fortunately, I'm far enough along in my DIY-journey I can have it like a Burger King, my way.

What program is that FF?

 

[BuddytheReow]

What program is that FF?

TSC in the web

 

[Feral Feline]

What program is that FF?

The Duncan Tone Stack calc is for PC only, I'm on a Mac so I use the online TSC (link was in my post and in BtR's above.

If you look at the screenshots, you'll see at the top of them it not only does Muff, but all sorts of tone-stacks including the SWTC (Stupidly Wonderful Tone Control) [Edit: MARK HAMMER's, which has been tweaked by AMZ's Jack Orman], which is a favourite of mine, but I only just noticed it on there while typing this!

The only thing I'd change is to make the Muff Tone-Stack on the TSC look like a Muff tone stack...


< HPF vs LPF MUFF-TONE DIAGRAM BY CODA EFFECTS


I mean, c'mon TSC people! My brain always has to translate the TSC's schematic to the Coda example used by just about every Muff schematic ever (with a stock tone-stack at least)...

ENNEWAYZ...yeah, TSC, very cool resource. It was ages before I realised I could adjust the fader lower left — and the graph responds to where you've set the TONE fader/knob. Change it to Audio-taper (logarithmic) and all that.


Have some fun with it, compare a Purple Ram's head tone-stack's scoop to that of a black Russian — etc.