Any idea on why I am getting a buz in my headphones?

NGT · Nov 27, 2004

NEW POST DOWN AT THE BOTTOM

Is this possible?

take two stereo headphone extensions....cut one end off of each and strip them

(they should have 3 wires inside right?)

then attatch the three wires to panel mount headphones jacks on the CP...

then plug the other ends into the headphone jacks on the memory card reader...

(it's mounted on the back of the cab)

would this give me two working stereo headphone jacks on the cp?

sorry for the stupid question.....but I am not sure how the headphone jack stuff works getting stereo from the 4 pins...

thanks for looking.....

ttooddddyy · Nov 27, 2004

that should work OK

NGT · Nov 27, 2004

got a problem, not sure what the deal is....

I have a panel mount headphone jack with 3 points to solder to. On the box, it said "stereo"...

so, I cut a stereo headphone extension and it had 3 wires inside of it.

red, white, and the shield.

I put the headphones straight into the mem card reader and get perfect stereo sound....

...but when I use the adapter I made, I only get sound in one ear of the headphones. It sounds like all of the sound is just going to one side....

on the headphone jack adapter I made, the center solder point is ground and then there are two others, I just put the red to one and the white to the other...

Any idea what the problem is? or could be?

NGT · Nov 27, 2004

I purchased a couple of these just incase I can't get it working, but....
http://www.frontx.com/cpx090_2.html

if anyone has any ideas, I would apprecaite it!!

NGT · Nov 27, 2004

I guess the guy just sold me the wrong part :very_ang:

What gets me is, I took like 5 different parts up to him and asked him which one would let me do what I wanted to do....and he picked that one. They are closed tomarrow and work starts Monday again so I won't have the time. I wish I could punch that guy in the face!

NGT · Nov 27, 2004

how many pins should a STEREO RCA PANEL MOUNT JACK have to solder to?

some parts had 3, some looked to have 5-6?

thanks!

NeoCverA · Nov 27, 2004

why not just use a Y splitter type of plug coming from the Memreader and hook up your cables to that. I would imagine you wouldnt even have to cut those cables, just use it as is.

I dont have a mem.card reader so Im really interested in how to create a headphone jack to my cab without one. I really like those cables too as it would look cool mounted on the cab.

If you pull it off going straight to the mobo, please give us detailed instructions!

good luck.......

NeoCverA · Nov 27, 2004

After reading your first post again I see that you wish to hook it up via the memcard reader.........so i would think that the solution would look something like this (using the part you posted - or at least one that would give you stereo sound after testing a direct connection to the memcard reader)

this is using that Y adapter i mentioned in the previous post

excuse the crude photoCHOP skillz but it gives a good illustration of what i was talkin about earlier.

NGT · Nov 28, 2004

basically, that's what I am trying to do, but plug each headphone extension into it's own jack on the mem reader

I am also not using the plastic pieces on the end.

NGT · Nov 28, 2004

did it with some other parts and have some nice headphone jacks on the front of my cab.

problem is, there is a buz in the headphones. So, I took the headphones out of the jack and plugged them directly into the memory card reader....

...and there's still a buzz.

So, it's not my extensions...

I don't know why this is buzzing, but will shoot some ideas out there and if anyone can give me a yes or no or have an idea, it would be appreciated!

-mem board too close to the power plug in the back?
-mem board too close to the back of the monitor?
-wires used to go from the neo mb to the mem board are too small (28 guage)?
-to make that cable, i used the 4 pin connectors where you slide the wire in the slit and not solder type?

any other ideas? would these things possibly cause this issue?

(the scratches and scuffs were complements of A.I.)

chris1 · Nov 28, 2004

It might be a ground issue..

Nice job...

Since the reader is towards the back of the cab..

I'd say it's interference..Is the part the headphone jacks are in now on the CP metal or plastic.?
too close to the monitor.?...Unplug the monitor and power up the cab....see what happens.
too close to the plug in the back?...I'd say..move the reader closer to the cp and see if the buzz goes away.

Maybe the cables themselves are too close to the Power supply.

Make sure that fan you put in is unplugged..it could be that causing the interference.

Do you get a buzz without the extra stuff/added headphone jacks extension not hooked up..
Did you get the buzz before this was set-up..?

Just some ideas..

NGT · Nov 29, 2004

It might be a ground issue..

How can I check them?

Since the reader is towards the back of the cab..

I'd say it's interference..Is the part the headphone jacks are in now on the CP metal or plastic.?

it's metal and it's mounted in metal....but, the buz is the same when I plug the headphones directly into the meory card reader.

too close to the monitor.?..Unplug the monitor and power up the cab....see what happens.

How exactly might one go about doing that?

too close to the plug in the back? I'd say..move the reader closer to the cp and see if the buzz goes away.

Make sure that fan you put in is unplugged..it could be that causing the interference.

cool, I will try that too...

Do you get a buzz without the extra stuff/added headphone jacks extension not hooked up..Did you get the buzz before this was set-up..?

yes, the buzz comes without the extension. It's there when the headphones go directly into the reader.

Just some ideas...

always appreciated!! thanks!

MKL · Nov 29, 2004

I'd try hardwiring a headphone to the 4-pin headphone connector on the motherboard. If there's no buzz then you can start checking the other segments.

NGT · Nov 29, 2004

MKL said:
I'd try hardwiring a headphone to the 4-pin headphone connector on the motherboard. If there's no buzz then you can start checking the other segments.

I'll try that too...thanks!

I am sure I have asked this before, but do you know the headphone jack's pinout?

MKL · Nov 29, 2004

I know the inner pins are grounds, just swap the external ones if you hear they're inverted.

RiotoftheBlood · Nov 29, 2004

Here are some other ideas:

* Twist the three wires together... this may cancel much of the noise.
* And / or shield the three wires.

J0e Musashi · Nov 29, 2004

See the 4-pin connector on the mobo is designed to go to the MV-IC, which has 2 headphone sockets on it. Maybe something is happening because of this? I'd drop out the Y connector and just use both the jacks on the reader. It seems that you are running 2 sets of headphones from one jack. Maybe your problem lies here?

NGT · Nov 29, 2004

J0e Musashi said:
See the 4-pin connector on the mobo is designed to go to the MV-IC, which has 2 headphone sockets on it. Maybe something is happening because of this? I'd drop out the Y connector and just use both the jacks on the reader. It seems that you are running 2 sets of headphones from one jack. Maybe your problem lies here?

I have the 4 pin going to the mem reader and the the jacks on the mem reader give off the buzz. (I have extensions going to the front of the cab, but the buzz starts at the mem reader)

I know the inner pins are grounds, just swap the external ones if you hear they're inverted

cool! Thank you

* Twist the three wires together... this may cancel much of the noise.
* And / or shield the three wires.

Shield the 4 wires going from the motherboard to the mem reader?

I have the 3 wires coming from the reader to the jacks shielded.

I will check it out when I get home....

thanks to everyone for the suggestions!!

NGT · Nov 30, 2004

tried to use shielded wire from the 4 slot to the mem reader....still a buzz

hooked up another headphone jack directly to the 4 slot and held it outside of the cab....and no buzz.

Then I wired it through the cab and I get the buzz. This wire isn't shielded.

Next step, rewire this new jack to completely shielded wire going straight from the motherboard directly to the headphone jack.

The metal headphone jack is mounted in the metal cab, but when I tried it without it mounted, but still threaded through the cab and past the monitor, it still got a buzz, so I don't think that's the problem.

do you think that "next step" is the right one with what I have tested and found?

ttooddddyy · Nov 30, 2004

Do you have the MV-1C to mobo ground wire connected (thats the green wire top right of piccy below.)

NGT · Nov 30, 2004

ttooddddyy said:
Do you have the MV-1C to mobo ground wire connected (thats the green wire top right of piccy below.)

what's the best way to do that?

One to ground and the other (where on the mv-1c ?)

just screw on a corner? or is there a right spot to do so?

the thing is, I get the buzz even when I bypass the mv-1c all together.

I will try that and hook up the shielded stuff again and see if it helps. If it doesn't, I am going to take apart the setup that bypasses the mv-1c and re-do it with shielded wire and see if that helps...

if those don't....I don't know what else to do.

chris1 · Nov 30, 2004

NGT said:
what's the best way to do that?

One to ground and the other (where on the mv-1c ?)

just screw on a corner? or is there a right spot to do so?

the thing is, I get the buzz even when I bypass the mv-1c all together.

I will try that and hook up the shielded stuff again and see if it helps. If it doesn't, I am going to take apart the setup that bypasses the mv-1c and re-do it with shielded wire and see if that helps...

if those don't....I don't know what else to do.

I'm so lost in this situation but I wish I could help...Sorry man..

Is it a buzz or a hum.....?

When you bypass the mv-1c..are you unhooking the 4-pin connector that goes to the mv-1c

Maybe the motherboard itself needs to be grounded better..

Try groundng the mv-1c to the motherboard..using those green wires.

(mv-1c grounding)
The way the green ground wires are used in my big red compaired to the candy cab differ.
Maybe because it wood verses metal cab...?

ttooddddyy · Nov 30, 2004

NGT said:
the thing is, I get the buzz even when I bypass the mv-1c all together.

Sorry, missed that- anyway I would connect to any ground point on the mobo.
Usually leaving it unconnected has no noticable effect. But if its there may as well make the connection- the more common grounding the better, within reason.

NGT · Nov 30, 2004

ttooddddyy said:
Sorry, missed that- anyway I would connect to any ground point on the mobo.
Usually leaving it unconnected has no noticable effect. But if its there may as well make the connection- the more common grounding the better, within reason.

so where exactly? Should I have a ground running from the psu, to the shell of the motherboard? and from the shell of the motherboard to the corner of the mv-1c? I could do that in about 5 minutes.....

sound good?

chris1 · Dec 3, 2004

Eric..

How about trying the whole MVS board and M reader out of the cab..
Say in the Capcom cab or Supergun.

Did you try another set of headhones..

I have a spare M reader PCB with bad memory card reader pins that you could try if you think it may be that..

Any idea on why I am getting a buz in my headphones?

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