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Hey everyone,
I’ve been working on a DIY solution for powering my Rocktron Voodu Valve guitar rack preamp, and I ran into the exact same challenge as others have mentioned in older threads here. here is the thread:
Help, problem making a 4 pin DIN power supply for my electronic piano
Let's say the wiring is the same as the one in the schematic, it would mean 1,2 are for the negative pole and 3,4 for the positive poles?
I bought a 4-pin DIN connector and a 9V 1.5A power supply, only to find myself dealing with the problem of connecting 4 wires from the 4-pin DIN to the 2 wires from the power supply. I’m curious to hear how things worked out for those of you who did something similar, especially with keyboards or other equipment.
this is what it looks like:
Here’s my situation:
I’m in Europe, and finding the right 9V 1.5A 4-pin DIN power supply is surprisingly difficult. The few I’ve found either have UK prongs or are pretty expensive. Since I have some experience soldering (I’m a recording engineer and have soldered cables, bantam patch bays, and even components on vintage synths), I figured this project should be manageable. So, I bought a 4-pin DIN connector and a suitable power supply.
The First Problem
The first issue I ran into was that the 4-pin DIN had 5 wires and a ground, while my power supply only had 2 wires. I had to figure out which wire went to which pin and how the power was distributed internally.
I came across a helpful thread from 2019 where someone was working on a similar setup for their organ keyboard. The thread gave me some good pointers, but I still had some questions. Here’s what I’ve learned and what I’m working through:
Pin Layout
The pin layout was the first thing to confirm. Which is pin 1, and which is pin 4? I managed to sort this out with guidance from the old thread and confirmation from a Rocktron tech support person:
- Pins 1 and 3 are on the right side, and pins 2 and 4 are on the left side of the connector.
- The power polarity (positive/negative) isn’t critical here, as it’s managed internally by the Voodu Valve.
Wire Identification
The DIN connector wires are color-coded: White, Black, Red, Green, Blue, and a ground (with no shield). To determine which wire is connected to which pin, I’ll need to “ohm it out” using a multimeter for accuracy.
Alternate Solution
Interestingly, after starting this DIY project, I discovered a 4-pin DIN adapter with a female connector that converts to a standard 2.5mm power input. It’s available online for about $8 from China, which could be a quick solution if someone prefers not to solder.
Why I’m Still Building My Own
Despite finding that adapter, I’m committed to finishing this DIY project. Not only is it a fun challenge, but it could help others who want to build their own power supply.
If you’re tackling the same issue, you can either get the adapter or dive into the DIY route like me. I’ll post updates with the finished product once it’s ready!
In the meantime, be safe, be happy, and build something cool.
I’ve been working on a DIY solution for powering my Rocktron Voodu Valve guitar rack preamp, and I ran into the exact same challenge as others have mentioned in older threads here. here is the thread:
Help, problem making a 4 pin DIN power supply for my electronic piano
Let's say the wiring is the same as the one in the schematic, it would mean 1,2 are for the negative pole and 3,4 for the positive poles?
I bought a 4-pin DIN connector and a 9V 1.5A power supply, only to find myself dealing with the problem of connecting 4 wires from the 4-pin DIN to the 2 wires from the power supply. I’m curious to hear how things worked out for those of you who did something similar, especially with keyboards or other equipment.
this is what it looks like:
Here’s my situation:
I’m in Europe, and finding the right 9V 1.5A 4-pin DIN power supply is surprisingly difficult. The few I’ve found either have UK prongs or are pretty expensive. Since I have some experience soldering (I’m a recording engineer and have soldered cables, bantam patch bays, and even components on vintage synths), I figured this project should be manageable. So, I bought a 4-pin DIN connector and a suitable power supply.
The First Problem
The first issue I ran into was that the 4-pin DIN had 5 wires and a ground, while my power supply only had 2 wires. I had to figure out which wire went to which pin and how the power was distributed internally.
I came across a helpful thread from 2019 where someone was working on a similar setup for their organ keyboard. The thread gave me some good pointers, but I still had some questions. Here’s what I’ve learned and what I’m working through:
Pin Layout
The pin layout was the first thing to confirm. Which is pin 1, and which is pin 4? I managed to sort this out with guidance from the old thread and confirmation from a Rocktron tech support person:
- Pins 1 and 3 are on the right side, and pins 2 and 4 are on the left side of the connector.
- The power polarity (positive/negative) isn’t critical here, as it’s managed internally by the Voodu Valve.
Wire Identification
The DIN connector wires are color-coded: White, Black, Red, Green, Blue, and a ground (with no shield). To determine which wire is connected to which pin, I’ll need to “ohm it out” using a multimeter for accuracy.
Alternate Solution
Interestingly, after starting this DIY project, I discovered a 4-pin DIN adapter with a female connector that converts to a standard 2.5mm power input. It’s available online for about $8 from China, which could be a quick solution if someone prefers not to solder.
Why I’m Still Building My Own
Despite finding that adapter, I’m committed to finishing this DIY project. Not only is it a fun challenge, but it could help others who want to build their own power supply.
If you’re tackling the same issue, you can either get the adapter or dive into the DIY route like me. I’ll post updates with the finished product once it’s ready!
In the meantime, be safe, be happy, and build something cool.
