series resistance ?

[LightSoundGeometry]

hello, looking at this part of the schematic here :








can I use the series circuit equivalent if I do not have a 560R on hand? I do have a 470R and a 100R which puts me only 30 ohms off ..and would 30 ohms be too much ? I admit I do not know the tolerance limits of said math equation

thanks in advance

[Granny Gremlin]

Um, 470+100=570 and 570-560=10 Ohms difference not 30.

10 Ohms would be about 1.8%. Unless it's super critical for some reason that escapes me it should be no biggie (looks like an old schem back from the days where most things used 5% carbons - you'd be using 1% right?  You'd still be doing better).

[LightSoundGeometry]

my bad on the math lol..

I have both 1% and 5% but am using the 1% on this one

appreciate the quick response gremlin ..this forum is fantastic!

modified

its 47R4 + 560R5= 607 ohms

Rt of 607-470-100 = 37 ohms

so I would have Rt of 570 ohms


the important thing is I can use the series resistance to formulate equivalent R ..I forgot about the 1K pot that should be calculated as well? it is also in series with the r4 and r5 

[PRR]

It's audio; and it is a guitar booster.

20% is normally plenty good.

Much of the Good Old Stuff was built with 10% parts only because 20% parts were going out of style.

540 to 470 is just 19% different. Use 470. It WILL work.

[LightSoundGeometry]

It's audio; and it is a guitar booster.

20% is normally plenty good.

Much of the Good Old Stuff was built with 10% parts only because 20% parts were going out of style.

540 to 470 is just 19% different. Use 470. It WILL work.

Thanks Paul, got her boxed up and she sounds like a dirty old Rat