madbeanpedals::forum

General => Open Discussion => Topic started by: neil463 on February 28, 2017, 08:35:39 PM

Title: 1776 Multiplex JR Knob description
Post by: neil463 on February 28, 2017, 08:35:39 PM
Probably a stupid question that I can't find the answer to.  Does anyone have a description of what the 5 pots for the multiplex jr control?  E.g. is depth controlling the depth of the modulation or echo, etc.

Here's what I'm hearing, but I'd like to be positive before I give it to a friend.

Mix - Mix of dry and wet sinal
Time - Length of delay
Feedback - number of repetitions of the delay signal
Depth - Depth of Modulation
Speed - Speed of Modulation

Title: Re: 1776 Multiplex JR Knob description
Post by: midwayfair on February 28, 2017, 08:52:57 PM
Functionally, yes.

It might be more useful, however, to understand that the feedback control is how much of the delay signal is returned to the PT2399. That is, literally feedback. "Number of repeats" implies that you get one repeat here, two repeats at the next stop, etc, but it's more that the chip decays the signal at a certain rate and once the signal size drops below a certain point it won't be delayed again. You get one repeat at the lowest setting because the feedback control grounds the delayed signal on the return line (so it never makes it back to the chip).
Title: Re: 1776 Multiplex JR Knob description
Post by: neil463 on February 28, 2017, 09:35:18 PM
Awesome thank you for the added information!
Title: Re: 1776 Multiplex JR Knob description
Post by: gtr2 on March 02, 2017, 01:48:16 PM
Thats a great description of it for repeats vs feedback.