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Quick question (albeit probably a dumb one). I built an Apollo Tremolo for someone a year or so back, he didn’t want the kill switch so I obviously didn’t implement it. I’ve had a second PCB that I populated a while ago that I’m finally going to finish up. This time I’ll be putting in the kill switch. My question is, when the kill switch is engaged it of course removes the tremolo effect whilst maintaining the buffer…does it also turn off the status/rate led for the tremolo effect?
Have a look at the schematic. You will see by flipping the switch SW2 (Kill Switch) you are effectively bypassing the entire top half of the circuit schematic while simultaneously giving you control over the BLevel or Buffer Level not previously available.
Always a wise decision to incorporate the Kill Switch as it gives you two pedals in one. Enjoy!
I know that taking a quick look at a schematic can sometimes be misleading.
Look closer at the schematic and you will see that SW2 in the position shown (kill) does bypass the upper part of the schematic (which is the LFO). Instead, it connects a steady voltage to the optocoupler and “kills” the effect while passing the dry signal. But, the LED is still functioning as a rate indicator in the LFO section! Even better, it changes color to show that the effect is bypassed. Clever design!
I was thinking the same as Barry and then there was a point while looking at the schematic that I started second guessing myself (I don’t have it in front of me at the moment). I was going to incorporate the rate led into a plexi light plate between the enclosure and back plate…but since the led stays on even while “killing” the effect via the kill switch that may be a bit annoying while on stage to have that much light going at all times. Hmmm…
Or…think of the benefit of seeing /and adjusting the rate before you activate it. Your choice.
Being able to see the rate before activating it is great. I just meant that if I used a plexi light plate that may be a bit too much light to have going on since it would be moving to the rate at all times.
Gotcha. This tremolo is one of my favorite units that Barry produces.
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