I am new to doing things on my own. I usually would just buy it from the store but I am trying to venture out and have some fun. I have a 1/4" - XLR that is unbalanced. Playing a bass or guitar through the wiring does just fine but when I hook up a TD-20 (roland drums) I get a nasty buzz/hum.
I have one wire going from (1/4" - T) to (XLR - pin 2)
The second wire going from (1/4" - S) to (XLR - pin 3)
and then a jumper from (XLR - pin 1 to 3)
I bought a radio shack isolated transformer 1:1 and it has four wires on it. I am wondering where I would hook these wires into the mix of the above configuration to reduce/kill the buzz/hum.
I also bought a 100ohm/1watt resistor. I heard I could do this configuration and it work just the same.
I have one wire going from (1/4" - T) to (XLR - pin 2+)
The second wire going from (1/4" - S) to (XLR - pin 3G)
and then the resistor from (XLR - pin 1- wire to pin 3G)
I would like for both options to work and to know how. I have searched a lot and haven't found anything or I am just too simple minded and can't see it staring me in the face. Any help would be so helpful because the band using the equipment is needing it tomorrow.
I have one wire going from (1/4" - T) to (XLR - pin 2)
The second wire going from (1/4" - S) to (XLR - pin 3)
and then a jumper from (XLR - pin 1 to 3)
I bought a radio shack isolated transformer 1:1 and it has four wires on it. I am wondering where I would hook these wires into the mix of the above configuration to reduce/kill the buzz/hum.
I also bought a 100ohm/1watt resistor. I heard I could do this configuration and it work just the same.
I have one wire going from (1/4" - T) to (XLR - pin 2+)
The second wire going from (1/4" - S) to (XLR - pin 3G)
and then the resistor from (XLR - pin 1- wire to pin 3G)
I would like for both options to work and to know how. I have searched a lot and haven't found anything or I am just too simple minded and can't see it staring me in the face. Any help would be so helpful because the band using the equipment is needing it tomorrow.
If the transformer has no center tap, I would just connect it like you had it before- Tip and Sleeve to one side, Pin 2 and Pin 1&3 tied together to the other side. That will break the ground connection.
Keep in mind the bass response probably won't be great in such a small transformer.
There is a pretty big impedance mismatch here, you really should be using a matching transformer or direct box. Most modern well designed preamps can handle a pretty large mismatch, so it should work.
Keep in mind the bass response probably won't be great in such a small transformer.
There is a pretty big impedance mismatch here, you really should be using a matching transformer or direct box. Most modern well designed preamps can handle a pretty large mismatch, so it should work.
Sorry if I am misunderstanding what you are saying.....
If so, I am needing the buzz/hum isolated thus the need for the isolated transformer.
By the above are you saying I shouldn't need the transformer based on the below config?
If so, I am needing the buzz/hum isolated thus the need for the isolated transformer.
Sorry,
Without a center tap you won't be able to get a true balanced output easily, but it not absolutely necessary for a quick fix.
Wire the transformer in-line, with the 1/4" on one side and the xlr on the other. The packaging should have come with a diagram of the transformer.
Without a center tap you won't be able to get a true balanced output easily, but it not absolutely necessary for a quick fix.
Wire the transformer in-line, with the 1/4" on one side and the xlr on the other. The packaging should have come with a diagram of the transformer.
XLR pin 1 has nothing to do with the audio signal. XLR pin 1 should be connected only to chassis and cable shield. But your 1/4in plug is mono (T/S not T/R/S) so don't connect the 1/4in shield to the XLR shield.
- Status
- Not open for further replies.