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Joined:
April 2003
Posts: 6
| Hi,I just got my new Adamas smt 1597... wow :cool:
I read here about the problems that people got into concerning the xlr - xlr chords and still didn't figure out how to solve the problem....
When i plug the guitar with Xlr to xlr chord going to a mixer with phantom, it only works while the tuner is on. then when the tuner goes off, it mutes the output as well.
I didn't get any special cable with the guitar,and the manual says it should work with any proper cable... the cable i use for a condenser mic doen't work (only with tuner...)
So what to do if i wanna play more than 60 secs of "balanced" music???
:eek:
Thanx |
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Joined:
December 2001
Posts: 7251
Location: The Great Pacific Northwest | You must put a dummy plug into the 1/4" connector. I have no idea why they are still doing this, maybe someone else more knowledgable does. I have a special xlr cable for my Adamas, so I thought that was still necessary too. |
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Joined:
February 2002
Posts: 5750
Location: Scotland | If you are using an XLR-XLR and have phantom-power there is no need for a dummy plug. The dummy plug is intended to activate the battery if you want to go XLR-XLR into a mixer that cannot supply phantom, or you are using an XLR -jack cable. If the cable you are using will work with a phantom-powered mike it should also work with your guitar, the tuner should not interact with the output signal. Do you have a battery in the guitar as well? It sounds like there may be a fault with the pre-amp. Talk to customer service. |
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Joined:
April 2003
Posts: 6
| Hi again,
thanx a lot for the quick answers.
I did got a battery inside the preamp supplied with the guitar. and it works fine(the tuner works when the guitar is unplugged)
i tried to use the dummy jack and it worked as well with xlr-xlr. what does it mean then?
that the dummy activates the preamp and the phantom plays no role? cause when i plugged it xlr-xlr it worked with the phantom and when i turned the phantom off it didn't work...
So what is your opinion? is there a fault or not?
Thanx a lot. :) |
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Joined:
February 2002
Posts: 5750
Location: Scotland | If you do not have a battery in the guitar, but use phantom power, the preamp will work, but the tuner will not. When using phantom the battery is for the tuner only. The pre should work perfectly, with or without a battery, and without the dummy activation plug, on phantom power. Check the wiring on the cable, it should be pin 2=hot, pin 3=anti-phase hot, pin 1=ground.
Sure sounds like a faulty pre to me. |
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Joined:
April 2003
Posts: 6
| Thanx again for the answer
after a bit of a checking, i found out this :
The XLR jack on the OP-50 gives you a professional, balancedline connection to mixers and high-end acoustic amps. The phantom power capability allows your mixer to power the preamp. Any XLR cable with a ground-to-shell connection (Ovation P/N 9658-0) is required for the auto power-on function.A "dummy plug" (Ovation P/N 9659-0) inserted into the 1/4" jack can be used instead, if the proper XLR cable is not available.
in here
Why do you think its a faulty preamp ? |
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Joined:
January 2003
Posts: 1498
Location: San Bernardino, California | You could probably make the connection in the XLR plug. There's usually a solder tab to ground the shell. Just solder a wire from pin 1 to the tab.
(XLR! I can remember when they were called cannon plugs) |
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Joined:
February 2002
Posts: 5750
Location: Scotland | It would seem that there are some subtle differences in the way the Optima & Op50 operate with phantom power. I was basing my evaluation on the Optima on my SMT which works with a standard XLR cable & doesn't require a connection to the XLR casing or a dummy plug. Try, as BruDev suggests, connecting pin 1 to the shell tag. If I understand the manual it would appear that this is needed so the guitar recognises that phantom power is present, hence "auto-on" |
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Joined:
April 2003
Posts: 6
| FINAL CONCLUSIONS
1 - It worked with A regular XLR-XLR (cannon ;) )
only while the dummy 1/4" plug was plugged in.
2 - As BruDev suggested, i made this "special cable" where pin 1 is connected to the tag and it worked as well :D
3 - In both cases, it worked with or without the phantom power.(Is that ok? meaning that it is using or not using the 9v battery?)
4 - The guitar is really becoming amazing....
5 - I thank u all alot :cool: |
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Joined:
April 2003
Posts: 6
| Just wanted to make sure,
Is that ok that the preamp works in both cases with or without the phantom power?
If it is ok, does it mean that it is using or not using the 9v battery for the amplification? |
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Joined:
January 2003
Posts: 1498
Location: San Bernardino, California | It's more than likely that when the phantom power is on the pre-amp is using that, and when it's off the pre-amp is using the battery. The circuit to do that is pretty simple. I suspect the jumper in the XLR plug is connecting the battery for this dual source operation. Basically it uses whichever is a higher voltage. If I remember right phantom power is 48 volts. |
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OP-50 problems
