Simulcast R12 value?

[frankenteletron]

I'm populating my pcb for the Simulcast today.
I somehow missed ordering a 450 ohm resistor for R12.
I happen to have a spare 470 ohm handy from an old build.
Would it be close enough?
What might the difference be if noticeable?

Can't wait to finish this build!

Thanks!

 

[Robert]

470 ohm will be fine, I think that's what most people are using...

That resistor sets the amount of gain in the Medium gain setting, I don't suspect 20 ohms difference would be audible.

 

[frankenteletron]

Great! Thanks for confirming so quickly.

 

[frankenteletron]

Sorry to bug with another question!
For C2 I have a Ceramic 330p cap with 351 marking on it.
I also have an Apex/GL Polyfilm 330p cap with 331K 100V marking on it.
They both are small enough to fit the space.
Does it matter which one I use?

 

[Robert]

351 would actually be 350p but I think either would be perfectly suitable.

 

[frankenteletron]

Geez! Last question. Again, thanks for the info and patience.

For C9 it calls for a 330u cap but the closest I have is a 470u. No idea how I ordered this wrong. Must have been a late night.

I know it's a long shot but would that work? Would it alter things much?

I'll probably wind up ordering the exact part soon.

 

[Robert]

I don't think 470u would be a problem here, this is basically a bypass capacitor.

Any frequency cutoff is going to be waaay below the range of human hearing.

 

[frankenteletron]

Interesting! What frequency range would be lessened? High or low?