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Xonar Essence STX: Sneak Peek! - Page 120

post #1786 of 2057
7/28/09 at 7:34am
Hi

Is it possible to connect a guitar through the line-in of this card ?

I want to learn to play guitar and planning to get a guitar without a guitar amp.
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post #1787 of 2057
7/28/09 at 8:03am
guitar is high-Z, not gonna work...you need a DI box
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post #1788 of 2057
7/28/09 at 8:28am
thanks for your response... I will have a look at those DI units.
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post #1789 of 2057
7/28/09 at 9:59am
Quote:
Originally Posted by takengo2003 View Post
thanks,

you mean you dont notice anymore difference after 200 hours of burn in?

by the way, what setting to use on the ST/STX if pair with AKG K701/K702 ? should we use the lowest setting (<64ohms) or middle setting?
I think the changes have dropped to such small levels that I can't tell if something has changed between over-night pink noise sessions...

I use the lowest setting and turn the knob to 50-70% depending on source volume. You can use the second gain setting but then it is difficult to get the volume perfect (25-35%). As far as I know the gain setting is just a volume boost and shouldn't affect the sound, but the boost happens in the amplifier-chip so something could change, but not as far as I can tell...
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post #1790 of 2057
7/28/09 at 8:59pm
Guitar will work just fine if you switch to mic input and boost it.
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post #1791 of 2057
7/28/09 at 10:27pm
Quote:
Originally Posted by Mr_Owlow View Post
I think the changes have dropped to such small levels that I can't tell if something has changed between over-night pink noise sessions...

I use the lowest setting and turn the knob to 50-70% depending on source volume. You can use the second gain setting but then it is difficult to get the volume perfect (25-35%). As far as I know the gain setting is just a volume boost and shouldn't affect the sound, but the boost happens in the amplifier-chip so something could change, but not as far as I can tell...
i see, thanks.

can someone tell me if i turn the STX to speaker mode, does it burn in all my 3 opamps, or is it burning only the opamp in the buffer section?

how about if i turn the mode to headphone mode in the STX, same question, does all my 3 opamps gets the burning in process too?
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post #1792 of 2057
7/29/09 at 12:24am
thank you taso89. so in that case, do I need the DI Unit ?
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post #1793 of 2057
7/29/09 at 1:33am
When I briefly used it for recording, it worked just fine, though I did have to amplify the signal. Other than that it was clean and everything. I'm not sure what a DI box is.
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post #1794 of 2057
7/29/09 at 3:24am
Quote:
Originally Posted by takengo2003 View Post
i see, thanks.

can someone tell me if i turn the STX to speaker mode, does it burn in all my 3 opamps, or is it burning only the opamp in the buffer section?

how about if i turn the mode to headphone mode in the STX, same question, does all my 3 opamps gets the burning in process too?
The line-out uses all three op-amps and the headphone-out used the I/V pair and a hi-z amplifier chip. However there is really nothing to "burn in" in any electronics, at least not chips, the only change that could occur is when they are warming up, anything else is in your head.
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post #1795 of 2057
7/29/09 at 1:22pm
Thread Starter 
Quote:
Originally Posted by d(((--)))b View Post
thank you taso89. so in that case, do I need the DI Unit ?
Yes, you still need DI box or a effect box with a line out...works just as good. Trouble with using the mic in and boosting it is the signal is very dirty (not in a good way) _mic inputs on consumer soudncards are very low quality. If you want a signal that you can work with for recording or playing through the PC....get the right tool. I play through the PC all the time. Both recording and using the PC as effects processor.
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post #1796 of 2057
7/29/09 at 1:24pm
Thread Starter 
Quote:
Originally Posted by takengo2003 View Post
i see, thanks.

can someone tell me if i turn the STX to speaker mode, does it burn in all my 3 opamps, or is it burning only the opamp in the buffer section?

how about if i turn the mode to headphone mode in the STX, same question, does all my 3 opamps gets the burning in process too?
Speaker mode uses all three opamps I/V and Single end buffer
HEadpheons mode uses just I/V and the TI headphone amplifier.

There is a great deal of debate going on about burn-in. There is some suggestion that caps will burn-in or settle over time...some think opamps do also but there is a large amount of debate on that one.
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post #1797 of 2057
7/29/09 at 1:27pm
Thread Starter 
Quote:
Originally Posted by taso89 View Post
When I briefly used it for recording, it worked just fine, though I did have to amplify the signal. Other than that it was clean and everything. I'm not sure what a DI box is.
DI =Direct injection, Direct interface etc... The main function is impedance matching. a guitar is a high impedance insturment. Mixer...recording units etc..usually have low impedance or line level inputs.

DI boxes are usually used to connect a guitar stright to the mixer or to another devices with low impedance inputs -such as a PC soudncard.
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post #1798 of 2057
7/29/09 at 10:55pm
thanks all for your contribution... I will look for a DI box
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post #1799 of 2057
7/29/09 at 11:05pm
Thread Starter 
There are many of them. various DI units or guitar interfaces.

Back to the STX.
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post #1800 of 2057
7/30/09 at 1:09am
thanks owlow and robscix for the info.

by the way, anyone tried lt1361 opamp at the I/V, thinking of either lt1361 or lm4562 at the I/V section. The buffer section i am using Moon hdam at the moment.

I have Sun,Moon and Earth hdam, also have 2x LT1361, 2x LM4562(same as the one from STX buffer), any idea which is the best combo for my STX?
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