understanding in-cap changes

[m_charles]

Just wanted to confirm something in my staggering walk through the jungle of electronics.
Although I have tweaked in-caps many times, the other day I was second guessing myself and my understanding of an in-cap's effect after tweaking a Rangemaster for use on my pedalboard.

So here's my understanding:

"With a simple circuit (or any circuit I guess?? but I'll stick to the RM for now) like the Range Master, raising the in-cap value is only allowing more lows to enter the circuit, not attenuating the highs in any way. Although letting those lows come through (with a .047uf as an example) may create the illusion of the highs being trimmed, it is really just the highs being "masked" by the lows. As far as the frequency-range itself goes, those highs are not increased nor decreased by raising the in cap value. In order to affect those highs, they would have to be cut in a whole other way (a low-pass filter for instance)."

Is my statement TRUE or FALSE? Partly true?

I'm not saying I even want to do this (cut the highs), I'm just testing my own understanding of the way this all works.

Anyone confirm this 4 me? thanks! -chuck

[CynicalMan]

Just wanted to confirm something in my staggering walk through the jungle of electronics.
Although I have tweaked in-caps many times, the other day I was second guessing myself and my understanding of an in-cap's effect after tweaking a Rangemaster for use on my pedalboard.

So here's my understanding:

"With a simple circuit (or any circuit I guess?? but I'll stick to the RM for now) like the Range Master, raising the in-cap value is only allowing more lows to enter the circuit, not attenuating the highs in any way. Although letting those lows come through (with a .047uf as an example) my create the illusion of the highs being trimmed, it is really just the highs being "masked" by the lows. As far as the frequency-range itself goes, those highs are not increased nor decreased by raising the in cap value. In order to affect those highs, they would have to be cut in a whole other way (a low-pass filter for instance)."

Is my statement TRUE or FALSE? Partly true?

I'm not saying I even want to do this (cut the highs), I'm just testing my own understanding of the way this all works.

Anyone confirm this 4 me? thanks! -chuck

True. The input cap in the rangemaster forms a high-pass filter. Increasing it reduces the cutoff frequency, letting in more bass.

[R.G.]

So here's my understanding:
"With a simple circuit (or any circuit I guess?? but I'll stick to the RM for now) like the Range Master, raising the in-cap value is only allowing more lows to enter the circuit, not attenuating the highs in any way. Although letting those lows come through (with a .047uf as an example) may create the illusion of the highs being trimmed, it is really just the highs being "masked" by the lows. As far as the frequency-range itself goes, those highs are not increased nor decreased by raising the in cap value. In order to affect those highs, they would have to be cut in a whole other way (a low-pass filter for instance)."

Is my statement TRUE or FALSE? Partly true?

It's true. I don't know that the highs are being masked by the newly-allowed-in lows so much as being less prominent by not being the only thing there. But yes, the highs are unaffected by letting more bass through.

[m_charles]

thank you fellas...