The Broadcast has a pretty pronounced high end (mine's the Duo). After some experimenting, developed a mod to tame the highs. Installed a 10nf mallory cap (from high/low footswitch output lug - blue wire on my version - look at which wire goes to "out" on PCB) to the center lug of a 3-way sub mini on-on-on SP3T toggle (short bat) with the up position going through a 22k metal film resistor (DARK TONE) to ground wire (at DC/INPUT jack) -or- down position to a 10K resistor (DARKER TONE) to ground - middle position is no effect (STOCK). Note: 10nf = .01uf
Placed the switch on the back of the enclosure between the DC in & Output 1/4" jack (unobtrusive). Allows me to select "DARK-STOCK-DARKER" and makes the Broadcast much more pleasing. The OG signal is still all connected as normal, you're just adding a path for some of the highs to be shunted to ground. Grabbing the output from the high/low footswitch lug allows this mod to be only active when the pedal is on (grabbing the signal at the output jack would affect the signal even if the pedal was off - you don't want this).
FS (blue wire) out lug > 10nf cap > switch center lug > 22 Kohm (or 10Kohm) >ground
Allows a quick external adjustment to better fit with different amps/guitars. You can experiment with resistor values but these seemed best to retain the character of the Broadcast and just slightly roll off the ice pick of the stock tone.
An alternative would be the 10nf cap + 50K linear 9.5mm (or internal trimmer) but that would either be obvious on the outside of the pedal (want to keep the pedal looking stock) or if an internal trimmer, you'd have to open it up to make any adjustment. With the switch, you have 3 settings instantly available with no real visual change to the pedal. If you're doing a pot, you'd probably have to do a panel mount (nut washer) which, even with a small knob, would protrude and probably be hard to fit on the backside, which leaves the side which would stick out and perhaps get in the way on a pedalboard (not sure a sweep would really provide that much of an advantage). I considered one of those plastic shaft small pots protruding through a hole in the back but those are typically PCB mount and would be harder to secure inside the pedal without changing things too much. So I decided a switch was the most elegant/foolproof solution.
SP3T ON-OFF-ON switch https://synthcube.com/spdt-on-off-on-sub-mini-toggle-short-lever-pc-pin/
Mallory cap: https://www.mouser.com/ProductDetail/75-MKP1839310401
Placed the switch on the back of the enclosure between the DC in & Output 1/4" jack (unobtrusive). Allows me to select "DARK-STOCK-DARKER" and makes the Broadcast much more pleasing. The OG signal is still all connected as normal, you're just adding a path for some of the highs to be shunted to ground. Grabbing the output from the high/low footswitch lug allows this mod to be only active when the pedal is on (grabbing the signal at the output jack would affect the signal even if the pedal was off - you don't want this).
FS (blue wire) out lug > 10nf cap > switch center lug > 22 Kohm (or 10Kohm) >ground
Allows a quick external adjustment to better fit with different amps/guitars. You can experiment with resistor values but these seemed best to retain the character of the Broadcast and just slightly roll off the ice pick of the stock tone.
An alternative would be the 10nf cap + 50K linear 9.5mm (or internal trimmer) but that would either be obvious on the outside of the pedal (want to keep the pedal looking stock) or if an internal trimmer, you'd have to open it up to make any adjustment. With the switch, you have 3 settings instantly available with no real visual change to the pedal. If you're doing a pot, you'd probably have to do a panel mount (nut washer) which, even with a small knob, would protrude and probably be hard to fit on the backside, which leaves the side which would stick out and perhaps get in the way on a pedalboard (not sure a sweep would really provide that much of an advantage). I considered one of those plastic shaft small pots protruding through a hole in the back but those are typically PCB mount and would be harder to secure inside the pedal without changing things too much. So I decided a switch was the most elegant/foolproof solution.
SP3T ON-OFF-ON switch https://synthcube.com/spdt-on-off-on-sub-mini-toggle-short-lever-pc-pin/
Mallory cap: https://www.mouser.com/ProductDetail/75-MKP1839310401
Last edited:
