Seabed Delay & Pythagoras/Threeverb - "Slothelope" & "Foxelope"

[jstreetny]

These were my third and fourth builds, respectively.

SEABED
Had to go back and reflow the in/out joints - as I got it to work at first, but then it went completely silent even in bypass. I'm glad I got the helping hands with the magnifying glass! Way easier to see bad joints. I ordered a bunch of knobs at once, so they're all bigger than I wanted and obscure the labels on all of my builds.



For some reason I totally forgot to order 180K resistors for R2, so I used a handy dandy parallel resistor calculator to figure out what to put there so I didn't have to wait.

It's not in this gutshot, but I also went back and added a couple of 1/8 15K resistors as a dropdown to get rid of a pretty gnarly pop. I feel like it brought the volume way down, but I was testing through headphones, so I'll check it when I can play full out.

There's also a bit of... I wouldn't call it static. Low-grade interference? It's just not completely clean. It's subtle, but definitely there. Could that be from a shoddy parallel resistor job? This was there before I added the dropdown.



Pythagoras/Threeverb

This one may have been my favorite. I opted for the pre-soldered Spin FV-1, since I'm pretty green. After my issues with the Seabed, I tried to slow down and not rush through. I still hate waterslides.


This is a great sounding pedal. I finished it up late and had to test it through headphones - but I can't wait to put this one through its paces. This pedal is good times.

 

[BurntFingers]

There should be a 1m ish resistor between input and ground to remove the pop and the low frequency interference can be mitigated with a big electrolytic cap between 9v and ground. Typically it's a 47uf or 100uf but pedals like the red llama use a 330uf there to filter off the noise from the PSU.

You can increase the value of this cap which should help. Since building a red llama I've used 330uf caps as power filtering in other builds and it really helps.

 

[jstreetny]

There should be a 1m ish resistor between input and ground to remove the pop and the low frequency interference can be mitigated with a big electrolytic cap between 9v and ground. Typically it's a 47uf or 100uf but pedals like the red llama use a 330uf there to filter off the noise from the PSU.

You can increase the value of this cap which should help. Since building a red llama I've used 330uf caps as power filtering in other builds and it really helps.

The pulldown I added removed the pop. To address the interference I have a couple of spare large caps, I think - so I'll try that. Thanks!

 

[phi1]

Are the repeats noisy, or just constant noise? Just a thought, there’s variation in the performance of pt2399 chips, some can be quite noisy on the repeats.

 

[jstreetny]

Are the repeats noisy, or just constant noise? Just a thought, there’s variation in the performance of pt2399 chips, some can be quite noisy on the repeats.

You know - I think it's the repeats. I socketed it, so I'll try another one and see if that helps. Thanks!

 

[BurntFingers]

You know - I think it's the repeats. I socketed it, so I'll try another one and see if that helps. Thanks!

It's also sometimes useful to spray contact cleaner in the sockets too and wipe the ic legs with isopropyl alcohol.