Add Verb R2 100k or 27k?

[Anonymous]

The Add Verb build document shows the main PCB with a 27k resistor at R2 but the BOM notes it should be a 100k resistor. My kit includes the 27k resistor… is that  the correct resistor to use at R2?

Many thanks in advance!

[Cybercow]

The BOM in my build doc for the Add Verb shows 27K. It’s what I used and works well.

And if you look closer, R2 shows as 27K in the graphic for the PCB component values.

[Anonymous]

I can see some confusion.  The schematic showed R2 as 100K.  The BOM also showed 100K.  This would yield a gain of 2 for IC1a.  27K would yield a gain of 7.4.

Perhaps there was a change when Barry updated the wiring diagrams?

[Cybercow]

Wilkie – I can see the discrepancy in the build doc that is online with PCB page. But the build doc I have has 27K across the board (BOM, schematic and PCB image) for R2. I suspect an error on the updated version that resides in the online PCB page..

[Barry]

Yes a quick Forum search indicates we updated this board to 27k to add a little extra Volume to the circuit.

Add Verb volume

I was personally fine with 100K but 27k added more.

Either way all is well and I will fix the Doc.

 

[Author]

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