Chuck D. Bones
Circuit Wizard
Have you powered it up?
This Week on the Breadboard: A Stereo Digital Reverb
- Thread starter Chuck D. Bones
- Start date
cooder
Well-known member
Not yet haven't had time time do more on it.
szukalski
Well-known member
Chuck - in the T60 there was a mode switch, which influenced the size switch, did you try this out (and have an opinion)?
I am putting this onto the backlog, with the initial idea to use a TL072 instead of the TL071 and using the spare opamp for summing the output in a switched mono mode.
I am putting this onto the backlog, with the initial idea to use a TL072 instead of the TL071 and using the spare opamp for summing the output in a switched mono mode.
Chuck D. Bones
Circuit Wizard
I tried the MODE switch. Did not find it to be very useful. I also learned that we don't need a dual pot for SIZE. A single pot can vary the VCO freq for both delay chips with no noticeable interaction.
If you only want a mono output, then you can use one opamp to mix the two REV outputs and the dry signal. One TL072 will take care of everything.
If you only want a mono output, then you can use one opamp to mix the two REV outputs and the dry signal. One TL072 will take care of everything.
passtheducky
Active member
It must go Hhhhwwwwwrrrrggggg when you change the size.
Chuck D. Bones
Circuit Wizard
Uh huh, just like any other PT2399 circuit.
cooder
Well-known member
It's been a minute... or two.
I had this boxed up and it motor-boated like a late sixties Evinrude two stroke outboard that desperately needs a new spark plug.
Some stuff up in there, put it in the 'to re-visit later' pile as I had other things pressing in my life.
Turns out I had some wrong schematic connections in the pt2399 section of board, @Chuck D. Bones had another gracious look at the schematic I had drawn up and pointed me to the goof ups, including a screwy Diptrace footprint for the 2N3906.
Ordered an updated corrected board and it all works. Have to try a bit more with it to see how I like the settings, only tested it so far, all knobbies and outputs work, so yaya, big yay.
I laid this out specially for my pedal board where I do have a bit of reverb always on at end of chain, so no footswitch and that just allowed to shoehorn it with two stacked boards into a 125B. Tight as the Bishops daughter.
I had this boxed up and it motor-boated like a late sixties Evinrude two stroke outboard that desperately needs a new spark plug.
Some stuff up in there, put it in the 'to re-visit later' pile as I had other things pressing in my life.
Turns out I had some wrong schematic connections in the pt2399 section of board, @Chuck D. Bones had another gracious look at the schematic I had drawn up and pointed me to the goof ups, including a screwy Diptrace footprint for the 2N3906.
Ordered an updated corrected board and it all works. Have to try a bit more with it to see how I like the settings, only tested it so far, all knobbies and outputs work, so yaya, big yay.
I laid this out specially for my pedal board where I do have a bit of reverb always on at end of chain, so no footswitch and that just allowed to shoehorn it with two stacked boards into a 125B. Tight as the Bishops daughter.
Similar threads
