"tails only" mod to the Echo Base delay?

[mordechai]

I am going to attempt to build a vero version of the Echo base from this layout:

http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=13885&g2_serialNumber=4

But I would like to omit the "boss" mode, so that it always allows the tails to trail away when the effect is switched off.  Can someone suggest a way to do that on this layout?   

[slacker]

All you need to do is jumper tails/boss 1 to tails/boss 2. That hardwires it in tails mode.

[mordechai]

Thanks!!

[mordechai]

Ian (Slacker...),

I am looking at the schematic for the "version 1" of the circuit in your gallery folder right now and I've found where the boss/tails switch is located in it.  The 10K resistor from the collector of the 2N5089 is connected to either "A" or B".  if I'm reading it correctly, both of these go to different points of the 4066 -- but I can't figure out which option -- "A" or "B" -- is the "tails on" option.  Wiring a jumper on the vero layout is easy but I'd really like to understand what's actually going on there.  Could you (or anyone else in the know who's reading this) briefly walk me through which option is the "tails on" connection"?  It would really help me decipher what's happening in the schematic from that point onward.

Thanks in advance.

[slacker]

"A" on the schematic is "tails/boss 2" on the vero layout. This controls the section of the CD4066 that is before the PT2399 so in bypass it stops the signal going into the delay. What ever signal is already going through the delay still goes to the output giving the tails effect.

[slacker]

"A" on the schematic is "tails/boss 2" on the vero layout. This controls the section of the CD4066 that is before the PT2399 so in bypass it stops the signal going into the delay. What ever signal is already going through the delay still goes to the output giving the tails effect.

[mordechai]

Thanks...that clears up a lot and I'm able to understand the schematic much better now.