Joined the Duophase club

[ftumch]

Build Rating

5.00 star(s)

This one's a blast from the past, we're going all the way back to the year TL072

Was easier than anticipated, it looks daunting but really it's just building two normal phasers at once, a "duo phase" if you will

I'm about 80% happy with the graphics and 100% happy with the name

 

[Guilherme Collateral]

Looks great inside and out, great job! I really love this circuit

 

[ftumch]

Looks great inside and out, great job! I really love this circuit

Cheers mate. Yeah it's fricking awesome

Stereo pair too, I can see why it became such a staple for dub production. Would have melted a few noggins back in its heyday

 

[ftumch]

It was late when I tested my build and the amp was very low. When I plugged in today I realised I had the dreaded ticking sound

First thing I tried was swapping op amps 6A and 6B with TL022s. It didn't help, but it didn't hurt so I left them there

The actual solution has been discussed a lot so it wasn't a surprise. It's caused by the hookup leads proximity to the LFOs. Here's a TL;DR for those who haven't built it yet:



After making this change my bypass signal was still ticking. The solution here was to place a buffer in front of the effect

I'd recommend getting a C-Buffer daugherboard if you're planning to build this:

So... a frustrating hour or two. But you'll have no trouble if you know this in advance

 

[ftumch]

Here's the working but slightly less tidy version. Gave one of the little guys a privacy curtain while I was there: