madbeanpedals::forum

Projects => General Questions => Topic started by: chordball on August 12, 2017, 03:41:55 PM

Title: Katana Boost Volume Pot Question
Post by: chordball on August 12, 2017, 03:41:55 PM
Hey everyone, I've searched but haven't found an answer so Im asking for a little help.

On the Katana boost, the stock volume pot is 250kB. I've seen it suggested that an audio taper is better. I don't have a 250kA pot but I do have a 100kA pot. Can anyone tell me what difference it would make to use a 100k volume pot vs 250k?

I'm working on a perf layout for the Katana with adjustable gain and switchable boost caps. I'll share it when I finish.

Thanks in advance for any help.
Title: Re: Katana Boost Volume Pot Question
Post by: midwayfair on August 12, 2017, 09:56:33 PM
Quote from: chordball on August 12, 2017, 03:41:55 PMI've seen it suggested that an audio taper is better.

Better in what way? Try both. see which one you like.

The point of a booster is to boost, though. An audio taper will put unity closer to noon. What do you need unity volume for on a booster?
Title: Re: Katana Boost Volume Pot Question
Post by: chordball on August 13, 2017, 03:01:56 AM
Quote from: midwayfair on August 12, 2017, 09:56:33 PM
Quote from: chordball on August 12, 2017, 03:41:55 PMI've seen it suggested that an audio taper is better.

Better in what way? Try both. see which one you like.

The point of a booster is to boost, though. An audio taper will put unity closer to noon. What do you need unity volume for on a booster?

I see your point about the taper so I will try them both. In the meantime, where could I find some info on the effects of the volume pot value?
Title: Re: Katana Boost Volume Pot Question
Post by: midwayfair on August 13, 2017, 03:28:41 AM
Quote from: chordball on August 13, 2017, 03:01:56 AMwhere could I find some info on the effects of the volume pot value?

The output impedance of the effect is 4.7k.

Plug 4.7 in as the top leg of a voltage divider, and 100K versus 250K in as the lower leg, and decide if it will make a big enough difference to care about.