Any new developments?
I received Myco's JK Lab box last week, Haven't really had the time to play with it yet. I did take the cover off on the inside, and I must say, I am amazed at how little circuitry is in that box. Looks to be a small shrunk-wrapped battery of some sorts, and just a dozen or so caps and resistors. Most of the circuit looks to be for the stepped pot that is a variable HPF. Almost looks too simple.
My plans for this box are as follows.
First I want to do a blind comparison of this box verses the gefell bodies and see how there compare.
second, I want to try make some frequency graphs of the comps and see how they compare.
Then, I will attempt to reverse engineer the circuit, and take it to someone with the know-how to suggest improvements.
FYI, the JK Labs box is as follows:
--one channel in via 4 pin plug(should be able to just double everything for two channels)
--1/4" TRS out (wired to two XLR's)
--has a 3.5 mini out
--has no on/off switch (inside the unit it says to remove the cap when not in use)
--has no gain
--has a 6 position rotary switch for 6 different base roll-offs (I am assuming one is unity)
--runs on one 9V and is marked as having a 350 hour battery life!!!!
--has a current draw of 1.5 mah
--the box measures 1 1/4" X 2 3/8" X 4 3/8" (there is a lot of unused space inside, so I'm guessing a two channel unit would be somewhere around 50% larger)
--there looks to be a battery pack of some sort permanently wired inside. I kind of remember Bill telling me that his R-boxes had something like twelve watch batteries in series to make a polarization voltage??? for the caps, and that there was almost no current involved so the batteries would literally last for many years, I'm guessing that is the case here as well)
All Good Things in all Good Time.
