anti-pop @ the jacks? and other protectional components...

[nokaster]

i have been wondering for a while if it's OK to solder a pulldown resistor (anti-pop) on the input jack instead of the board?
for instance a 1M resistor on the input jack, from tip to ground lug.
if this isn't OK, please tell me why?

same question for an anti rfi (radio frequency interference) capacitor.
can i add this to the jack in the same way? tip to ground...

furthermore there's the filter cap at the powersupply. (often 100uF)
and the polarity protection diode at the powersupply. (often 1N400x)
for these 2 in a box with multiple effects/multiple circuits, i suppose it is ok to just add these once, right?
what value filter cap would you recommend for multiple circuits? (max 6, most of them small)

thx for the help!

[foxfire]

anything that you put between the in/out jacks and the bypass switch will affect the signal when the pedal is bypassed. so yes it would work putting them there but i wouldn't put them there myself. as for the power supply filter and protection, you only need to do it once per box not circuit as far as i know. as for the value of the filter cap i always just use a 100uF myself.
Rylan

[The Tone God]

If you are referring to the 1M-ish pull down resistors people put on the ins and outs of effects to reduce pop then you cannot put them on the jacks. The resistors must be connected while the effect is in bypass to drain off the voltage that may accumulate while disconnected/bypassed. Putting the resistors on the jacks then bypassing with the switch disconnects the resistors from the effect circuit so you can have popping.

Andrew

[GREEN FUZ]

On the other hand, you can solder the rfi cap directly to the input jack without any problems.


Well, it worked for me.

[foxfire]

If you are referring to the 1M-ish pull down resistors people put on the ins and outs of effects to reduce pop then you cannot put them on the jacks. The resistors must be connected while the effect is in bypass to drain off the voltage that may accumulate while disconnected/bypassed. Putting the resistors on the jacks then bypassing with the switch disconnects the resistors from the effect circuit so you can have popping.

Andrew

i hate it when i don't think before i speak.
rylan

[R.G.]

i have been wondering for a while if it's OK to solder a pulldown resistor (anti-pop) on the input jack instead of the board? for instance a 1M resistor on the input jack, from tip to ground lug. if this isn't OK, please tell me why?

It's a modestly bad idea, not tragic. Pulldown resistors are not a general panacea for pops. They have a highly specific function: they provide a DC connection to ground for capacitors that would otherwise be floating because of signal switching. The jacks never float, as the signal line is always DC grounded by the guitar and the amp. So adding resistors at the jacks only increases the loading on your guitar (not terribly much, admittedly) and raises the prospect of treble loss for no benefit.

same question for an anti rfi (radio frequency interference) capacitor.
can i add this to the jack in the same way? tip to ground...

You can.

furthermore there's the filter cap at the powersupply. (often 100uF)
and the polarity protection diode at the powersupply. (often 1N400x)
for these 2 in a box with multiple effects/multiple circuits, i suppose it is ok to just add these once, right?

Yes. However, what's best is a big cap once (100-1000uF) and then 0.1uF ceramic on each board.