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Simple is.


Yeah, that's what makes it a tone circuit.


Again, simple is. Leo solved this over 50 years ago to save cap coin in the first Strat. The cap is shared in the leg to signal ground from both pots. This is where you'd place the switch.


So, since we've been discussing exactly this concept most recently, I'm gonna say, "hey, pay attention."

This one gives three cap values from two caps.
Free "Woman Tone"

If you look in The Demented TeleBlender, S2 puts two caps in sequential value order to realize three values.

Now, if'n you take wolf's circuit posted by cyn1 and use a SP3T Center-OFF switch, you will have no cap in the middle position.

Wolf's site is a great resource for ideas and inspiration.
www.1728.com/guitar.htm

Don't be concerned that the pot is connected to signal ground and the switch is connected to the signal. (Your only clue is that series networks are not affected by the positional order of their linear components, and are also not affected by "gravity".)

Now, there will be some slight interaction between the pickups if both of their tone controls are turned down and only one is selected, since they will be sharing a common capacitor. If this is a problem (it might be a neat feature, what do I know), use a DPDT Center-OFF switch and two caps per section/pickup/tone pot.


This cap sharing can also be easily done with a DP3T Center-ON (ON-ON-ON) switch, but the same interaction issue will exist.

Since you prob'ly have the DP3T Center-ON (ON-ON-ON) switch, use this for reference.

Fun With Toggles & Push-Pull Switches

I ordered a web special unfinished 2 piece swamp ash Tele body routed for two humbuckers with the forearm, tummy, and heel contours for $109.

$109!

Shipping to me on the "right" coast of the U.S. cost $20. So, it's a $129 body.

Now, to be honest, I have about 5 builds in the oven and didn't need this, but did I mention that it was $109!






Check out USACG, they're guys that left Warmoth a while back and started their own shop. Their web special bodies are usually about $50 to $100 less than Warmoth.

(Now, some of you might notice that I didn't say Warmoth. The guy there that so pd me off isn't there anymore. However,.......)


www.usacustomguitars.com/index.html
www.usacustomguitars.com/bodyspecials.asp
www.usacustomguitars.com/neckspecials.asp

Do you have some digital pics of the circuit board and ICs thereon?

tedfixx

If one connects two tone caps this way, and uses a SP3T (SPDT Center-OFF) switch, one gets 3 cap values.





Any cap values can be used, the center (series) position value will be 1/[1/C1 + 1/C2]

or

C1 * C2
C1 + C2

Nobody was off at all!

100 uA, 0.1 Ma, or 0.0001 A is the same exact thing in an absolute sort of way.

50 uW, or 0.05 mW or 0.000,05 W is the same thing as 0.000,000,05 KW or 0.000,000,000,05 MW.

To be really safe we should go with 0.000,000,000,1 MW resistors.

Hmmm, do you actually have a rack?

Regarding it as reference point, yes, but really, no.

"The DC resistance of a pickup tells you as much about a pickup's tone and output as the shoe size tells you about a person's intelligence!" Bill Lawrence


The inductance of the pickup structure (all of them in series) will likely be much less than a guitar pickup since all of the coil(s) turns are not on the same coil and hence, are not part of the same integral inductor (inductance is related to the number of turns ^2). Conversely, the inter-winding capacitance may be quite different as well.

Does each coil have a ferrous core?



Maybe a delay-on gate circuit might help since this may be attack-related.

Is there an issue with the far end (or struck end) of the tone bars/keys having too much (or not enough) travel when being struck?

Is it an issue of the felt/foam padding under each tone bar/key? Also, of the padding on top of each tone bar/key (under the fastening screw head)?



The "resistor" is in effect in parallel with the amp input. You may or may not need this. Adding the resistor will limit the harmonics produced, but this type of instrument may be more fundamental in nature that a guitar ("fundamentally", most instruments sound like a flute except for the envelope).

The pickup is an AC generator in series with its inductive reactance, its resistance and this structure is driving its inter-winding capacitance to signal ground. It's a series LCR circuit.

The low-cut cap is in series with the signal from the pickup going to the resistor going to signal ground, and the output jack tip terminal.

In essence, the cap is a frequency dependent capacitive reactance that forms a complex (plane) voltage divider with the generator and its series inductive reactance and resistance, driving the amp and resistor as a load to signal ground.

Since the pickup is really 30 individual pickups with 1/30 the number of turns of a Tele pickup, we might assume that the inductance is much less. If the structure was identical (which it is not), it would 30^2 or 900 times less. As a WAG, let’s guess that if a typical Tele pickup was 4 henries (it’s not, but it’s an average of many), we might surmise that it could (not would) be 5 to 20 mH. If we picked 20 mH, the series total would be 600 mH.


This is the design model for a single series low-cut capacitor. The pickup inductance is set to 600 mH, its series resistance to 4300 Ohms, and the inter-winding capacitance to 50 pF. The cable capacitance is set to 400 pF and the amp input resistance to 500 K Ohms. The “resistor”, which in this model is in direct parallel with the amp input resistance, is set to 200 K Ohms.


For a series capacitor range of 0.001uf, 0.0015uf, 0.0022uf, 0.0033uf, 0.0047uf, 0.0068uf, 0.01uf, 0.015uf, and 0.022uf, the following curves result. Ignore the dashed curves, as these are phase information which will just confuse me. The larger the capacitance, the less the attenuation. The vertical dashed grid lines from 50 Hz to 500 Hz are 50 Hz each. The peaking beyond 5 Khz is related to the series LCR circuit formed by the cable capacitance and my bad guesses as to component values, and therefore out of scope for this discussion.

Note that the response results in less attenuation than JohnH indicated, again from the component interaction in a passive (lossy) circuit.


This is the design model for a dual series low-cut capacitor. The pickup inductance is set to 600 mH, its series resistance to 4300 Ohms, and the inter-winding capacitance to 50 pF. The cable capacitance is set to 400 pF and the amp input resistance to 500 K Ohms. The “resistor”, which in this model is NOT in direct parallel with the amp input resistance, is set to 200 K Ohms. The amp input resistance forms the second pole’s “resistor”.


For a series capacitor range of 0.001uf, 0.0015uf, 0.0022uf, 0.0033uf, 0.0047uf, 0.0068uf, 0.01uf, 0.015uf, and 0.022uf, the following curves result. Note that the response does improve somewhat with a two-pole filter.



Anyway, this exercise will show the general response effect of various series caps in a SWAG circuit estimate.

Yep.

The two outside terminals are connected to the ends of the resistive element which can be within +/- 20% to +/- 30% of the nominal value. This value is the rated resistance value for a pot. The middle terminal is the wiper and the sum of the readings from it to each end terminal will be very close to what is read across the end terminals.

Yeah, that there beautiful '57 Goldtop!



Holy mother of cow pies, that's a mighty big microwave.



Baskin-Robbins only has 31 flavors of ice cream. I've had that many Strats over the years (well, that many Fenders).



Only if'n they gets a good beating as they pass thru Mexico (which is way much less that improbable).

Fender model numbers 013xxxx-xxx are Mexican in origin. These all have the skinny neck (1.650").


Now, that's marketing, selling Mexican Fenders for the price of a U.S. made Standard Strat. If you beat on your guitar, it goes down in value, if it's pre-beaten, it goes up.


To be fair, they do have a nitrocellulose-lacquer finish, and are supercharged* with Tex-Mex™ pickups and 6105 frets. I care about the finish and 6105's are my favorite fret size, although every U.S. Highway 1 that I've played (nitrocellulose-lacquer finish) seemed dull in tone.

*"supercharged" is a marketing term that means absolutely nothing and therefor incurs no liability for anything including nothing. This statement may include forward-looking statements which should not be interpreted to mean anything including nothing. This statement may also include backward-looking statements which should be interpreted to mean nothing including everything. Furthermore, this statement may be interpreted by some as being somewhat irreverent toward those engaged in the legal profession** and should not be construed to be an apology in any stretch of anyone's imagination, but if it is construed to be such, then it is unknowingly denied.


**Except for you, and you know who you are.

Apparently, a beautiful '57 Goldtop!

In the U.S., firearm suppressers are regulated and licensed, and generally frowned upon.

In Finland (I believe) one is required to use one to avoid disturbing the neighbors.

I always thought that they should be used to avoid disturbing the police.

Go figure.

Do tell. Hopefully it was an ARP2500 for a pittance.

I spent my late teens trying to realize reliable exponential/log analog circuits to do tracking analog synth oscillators. I still have many samples of log/anti-log ICs.

Now I just use a digital one that pretends to be analog (in the operator interface).

THANK GOD THAT YOURE DOING BETTER ITS A GOOD THING THAT OTHERS DONT HAVE SIMILAR TEXTING PROBLEMS AS ID BE HAVING TO SPEND TIME HELPING THEM THRU REHAB ALSO IM GLAD TO BE DOING BETTER MYSELF TO IMPROVE MY STEAD IN LIFE WHEN YOU GET LEMONS JUST MAKE LEMONADE GIVES ME HEARTBURN CAN BE CONFUSED WITH A HEART ATTACK LIFE WITH GUSTO.

('.'.'.') ;D ;D

/no