need help for ST3C 3 output jack modification

[Bee]

Greetings brothers, :wave:

I'm doing some experiment with my bass, I used STC 3 onboard bass preamp with 18v and original output stereo jack. in order to get balanced signal, I'm wondering if the output can be modified??.....
I want to put an extra XLR output side by side with the original stereo output jack, my question
1. Can it happen?....
2. what will happen to STC 3 circuit board, if I use the XLR output?.....
3. Can have a balanced signal from STC 3 after using XLR output?...

I'm opens for all suggestions, thanks a lot :bowdown:

 

[Funkfingers]

Re: need help for ST3C 3 output jack modification

Welcome to the forum.

The short answer to your question is no.

The Switchcraft Tip-Ring-Sleeve jack socket utilises its three terminals to, respectively, carry the audio signal, complete the battery power circuit and ground everything.

Even if you relocate the battery switching to, say, a discreet SPDT switch, the STC-3 PCB does not provide positive and negative audio signals.

 

[Bee]

Re: need help for ST3C 3 output jack modification

Welcome to the forum.

The short answer to your question is no.

The Switchcraft Tip-Ring-Sleeve jack socket utilises its three terminals to, respectively, carry the audio signal, complete the battery power circuit and ground everything.

Even if you relocate the battery switching to, say, a discreet SPDT switch, the STC-3 PCB does not provide positive and negative audio signals.

Oh I see....
if I want to have positive & negative signal, what should I do?....
are there any kits or tools which mix & works well with STC 3 onboard to change the signal into balanced?....

I saw some of the local (& international of course) famaous guitarist already had XLR output on their guitar.
thanks for your input.

 

[Funkfingers]

Re: need help for ST3C 3 output jack modification

On the majority of bass guitars featuring an XLR socket, the functions of the three pins are Signal, Ground and to carry a positive an electrical voltage to power the onboard electronics.

Balanced XLR sockets tend to be used for microphones and for line level audio signals where noise-cancellation is required.

On a bass guitar with active electronics, the onboard screening should be sufficient.

 

[Bee]

Re: need help for ST3C 3 output jack modification

you are right, 7 years, I had been using STC 3, all that time of all the show I had just great......
So... is that mean, there will be no way to put more tools together with STC 3 for making a balanced signal?....
I'm still curios for the XLR output which other guitars have.

your input really helping me. thank you

 

[Funkfingers]

Re: need help for ST3C 3 output jack modification

See post #4.

On an XLR socket, the three pins are Signal, Ground and External Power. That power could be driving the pickup pre-amp stage(s), the EQ network, fingerboard LED position markers or all three.

In my opinion, you will struggle to obtain a balanced signal from a SD/Basslines STC equaliser system. I would go so far as to suggest that you will not get a balanced signal from any SD/Basslines active pickup. The internal pre-amp circuitry negates the possibility of separate signal conductors.

 

[Bee]

Re: need help for ST3C 3 output jack modification

ok, thanks a lot