Muzzle key input question

[dlazzarini]

Doing some thorough studying before I actually attempt the build. I have the correct 1/4” trs jack for the key from Tayda. Looking at the build docs, I don’t see any ground coming from the jack. Only tip and switched tip. Is this correct? This is the only area of the build that I’m foggy about.

 

[Robert]

The first batches of boards didn't have a ground pad for the key jack. If your jacks are metal it will ground through the enclosure.

 

[dlazzarini]

The first batches of boards didn't have a ground pad for the key jack. If your jacks are metal it will ground through the enclosure.

My PCB has a third pad unlike the one in the build docs so I’m assuming I have a later batch. Which one of the 3 pads would be the ground pad? There’s a “T” I’m assuming means tip on the left side pad. Other than that I don’t see anything differentiating them. Im also guessing that I won’t be using a trs cable and this jack is just used for the tip switching on and off. Thanks for the quick response by the way.

 

[Robert]

Center pad is ground, Left is Tip, Right is Switched Tip.

Correct, you'd use a normal mono cable feeding a signal into the Key input. The switched jack is used so the gate still functions when nothing is plugged into the Key input. (Gating is then controlled by the input signal, rather than a secondary sidechained input)

 

[dlazzarini]

Center pad is ground, Left is Tip, Right is Switched Tip.

Correct, you'd use a normal mono cable feeding a signal into the Key input. The switched jack is used so the gate still functions when nothing is plugged into the Key input. (Gating is then controlled by the input signal, rather than a secondary sidechained input)

Ok thanks for clearing that up for me. I’m about to the point of digging in this build. Thanks again for the quick response.

 

[Bigshredder]

hi. I am having some trouble with this as well. In the kit from musikding the key input has 4 or 5 different lugs from the jack. Which one goes where? The build docs doesn’t say anything about wiring any third wire to any lug. Which lug does the tip go to and which lug goes to the tip switch and which to ground? I get no sound from my muzzle but it is gating and the 3pdt switch is working. When I switch to a trs cable in the switch jack I get audio but it’s heavy distorted so I think it must be a ground issue. Any idea on how to connect the switch jack?

 

[Robert]

The Key input connections are marked on the wiring diagram. (Tip / Switched Tip)

 

[Bigshredder]

Mine doesn’t look like that. It has 1,2,3 4 is just a hole and then B which I think is ground because its not located on the back but at the front

 

[Bigshredder]

Here’s a pic

 

[zgrav]

that is not a switched jack. just a stereo jack.

 

[Robert]

I'm not sure if that's a switched jack or not. If you have an ohmmeter see if you can determine which lug is the Tip, then with no cable inserted see if any other lug connects to that point.

For test purposes you can install a jumper wire across the Tip / Switched Tip pads on the PCB. You'll have no Key functionality but the gate should function properly.

 

[Bigshredder]

thats the jack that came with the kit. You are saying it’s wrong?! FML. I have spent 3 days with this build and I have hade nothing but trouble. First the wires broke (single coil that I got from a diy store) ALL of them so I hade to desolder them one by one several times and then the led didn’t work and now this!!

 

[Bigshredder]

The big lug is the tip. So the switched cable goes to the sleeve?

 

[Robert]

I'm not familiar with that type of jack, but it has four lugs so it's possible one of them is a switched tip lug.

What you're looking for is a lug that connects to the Tip when nothing is plugged into the jack. (and not connected to the Tip when a plug IS inserted)

It functions like Normalled jack in a mixer or patchbay.

 

[Bigshredder]

I WORKED! Finally!! Thanks a lot you saved me another sleepless night.
Just out of curiosity. The middle hole on the switch jack on the circuit is for the ground right? That should be soldered to the sleeve of the jack? I am done desoldering now so this last wire (it not soldered yet) is gonna be the last.
Also, the internal mini toggle switch, can you mount it either way on the circuit? Cuz I couldn’t find any info on it an now it’s there for all eternity

 

[Robert]

Awesome! So just to confirm, that was a switching jack included in the kit?

Yes, the center pad is for the Sleeve connection. It isn't required (and wasn't on the first revision of the PCB) so I didn't mention it to prevent more confusion. Go ahead and connect it if you'd like.

The orientation of the mini toggle switch makes no difference.

 

[Bigshredder]

Yes the switching jack was included in the kit. From musikding in germany. Superfast delivery to sweden. Every component and wire included in the kit. But the build docs could be a little clearer. Bought both the muzzle and the 33 clone. And the there was no telling what way the cathode and anode leg should be. On the muzzle and the triangulum boost had an square at the cathode but the building doc said otherwise so I ended up putting mixing them up twice.
The muzzle is a really tight build in an 125b enclosure. Everything is pushed and squished together and the lid is not entirely closed due to the switching jack.
But the both sounds great. The Triangulum boost have less bass and volume than my original fortin 33 so I think it maybe based on the grind instead.

 

[Robert]

The confusion with the LEDs is being corrected. All newer PCBs are clearly marked A/K.

The Triangulum is based on the 33, but I've seen at least three different revisions so that could explain the tonal differences.

 

[Bigshredder]

Nice
Anyone that is building the muzzle and reads this should put the long leg of the led to the right side. That is the right side when looking down in the enclosure inwards.
This gate is amazing. Promised myself that this is my final build because there are always so many things that needs to be bought or fixed or that ends up not as planed with diy but the way the muzzle works I might build another one as a spare.

 

[dlazzarini]

This is one hell of a gate. Makes me want to use my NS-2 for target practice.