Echo Base - a new PT2399 delay

[tasos]

Yep!pee works great!

[deafbutpicky]

Sorry for the link issues, somehow I can't edit my post so I'll try with this to fix the problem...

http://forum.musikding.de/cpg/displayimage.php?album=535&pos=0
http://forum.musikding.de/cpg/displayimage.php?album=535&pos=1

[slacker]

The buffer looks fine.

The butchered version looks good, except that shape cw should be connected to pin 7 of U1. I don't think it will work connected after R28.

[deafbutpicky]

As I took your vero for my own build and added the mods on this before I made my update vero, I tryied to stay as close to yours
as possible. This one slipped through. Actually the shape really acts a bit subtle, but I've got no comparison. Just in case,
here's another one. Had to add another line... darn

http://forum.musikding.de/cpg/displayimage.php?album=535&pos=2

[deafbutpicky]

During coffe break I took another look at my vero and guess what... found a mistake under U1.
corrected version here:

http://forum.musikding.de/cpg/displayimage.php?album=535&pos=1

[mr_deadmaxxx]

done.

[deadastronaut]

@mr deadmaxxxx...

is that a 1590b?....if so which layout did you use?...i'd love to have a smaller echobase.....board space etc...

[mr_deadmaxxx]

layout from anonymousfacelesscoward.

[poodlebra]

dimebugg pcb should slot in there easy too

[slacker]

Taylor's PCB will fit fine as well.

[Scruffie]

Taylor's PCB will fit fine as well.

I think he said it'd only fit a 125B actually, which is a tiny bit bigger.

[deadastronaut]

Taylor's PCB will fit fine as well.

I think he said it'd only fit a 125B actually, which is a tiny bit bigger.

yeah i thought that box looked a bit bigger than a 1590b!...hmmm...

[egasimus]

I made a new layout for the Little Angel, incl. the dry/wet mod and the pin 6 potentiometer mod. Should theoretically fit into a 1590a, too. Will post it when I have time.

[deadastronaut]

I made a new layout for the Little Angel, incl. the dry/wet mod and the pin 6 potentiometer mod. Should theoretically fit into a 1590a, too. Will post it when I have time.

cool...

[egasimus]

Damn, wrong topic

[~arph]

Would have been cool tho, an echo base in a 1590a 

[deadastronaut]

^now that i'd like to see...

[kipper_71]

Well, finally finished my build of this - certainly the most complex build I've ever attempted - and I was looking forward to a few evenings worth of debugging.

Plugged it in and ... it just works! 

I've since spent the last hour with a fat ass grin on my face playing and playing.  This pedal is simply awesome.

Slacker - thanks, you are a true gent for sharing this.  The switchable delay time pots work a treat too - you do sometimes get a bit of strangeness for a second right after switching, but that just adds to the fun!

[MarcoMike]

Hi, I am finally building one of these... but as I am not familiar at all with cmos switching I decided to go the hard-way....

and it seems all features of the original echo base are still unchanged, as the tails-option. and more, as in the configuration I am presenting, also a third mode is present, this is how I would describe them:

tails: no need to explain
direct: both "delay out" and "feed" are switched on at the same time. this way the delayed signal starts to generate when you switch the effect on
flashback mode: the feed of the delay is always on, so as you engage the pedal there is already something being delayed. and this is probably the same as in the original echo base.

so the 2nd mode is the new feature, no big deal. the great thing for me is no need for cmos switching!

* i didn't read the whole post, so all of this might already be known...

[slacker]

Nice idea, you might need to add caps between the opamps and switch 1 though otherwise it might pop.

You could add the direct mode to the original design if you wanted to using a rotary switch for the tails switch and wiring it so one setting connected to both points A and B on the original schematic.