spi
Well-known member
Here's my Octarock. I wrote a bit about it in a troubleshooting thread. After watching some demos, I concluded that perhaps there was nothing wrong with my build other than expectations. I'd still like to get other's opinions on this if you have built it.
Initially, I used a whopper of a 470uF without realizing it doesn't fit into a 1590BB. So, I replaced it with the largest cap that did fit, which is a 220uF, thinking that since it was only a power filter, it wouldn't impact tone. Does it? I think so. After the swap, the low octave isn't tracking as well--now it kind of peters out mid note. From the schematic, which is buried somewhere here in the forum, I see that the Vref (which is what is filtered) is connected right to the signal outputs, so I wonder if that causes this effect? I'll need to buy another 470uF and see if it gets better, but that'll have to wait until my next parts order.
Here's the initial cap which was too large:
Initially, I used a whopper of a 470uF without realizing it doesn't fit into a 1590BB. So, I replaced it with the largest cap that did fit, which is a 220uF, thinking that since it was only a power filter, it wouldn't impact tone. Does it? I think so. After the swap, the low octave isn't tracking as well--now it kind of peters out mid note. From the schematic, which is buried somewhere here in the forum, I see that the Vref (which is what is filtered) is connected right to the signal outputs, so I wonder if that causes this effect? I'll need to buy another 470uF and see if it gets better, but that'll have to wait until my next parts order.


Here's the initial cap which was too large:
