how to bring down line level signal to preamplifier level - Page 2

deji · 19th March 2004, 09:39 AM

allright i am getting a bit confused are u saying that the jack on my computer sound card where i connect my earphones is at line level

Frank Berry · 19th March 2004, 09:47 AM

Yes.

deji · 19th March 2004, 10:14 AM

and line level is the same thing as preamplifier level,which means i can hook up my earphones to the signal that drives a preamplifier right

Diode · 19th March 2004, 04:15 PM

That would be correct my dear fellow.

Just make sure that the volume is down as different headphones have very different sensetivities and very fine headphones will not take a lot of drive signal to be loud and clean.

In other words, turn the volume down so you don't take a chance on blowing the headphones.

Chris

deji · 15th April 2004, 03:29 PM

hi group
i tried hooking up the sound card directly as u suggested but it didn;t work out well as in the sound was scratchy so i reverse engineered a goodmans 4210b deck to see what really happens to the auxillary signal applied to the jack at the back.so i constructed the circuit and it worked quite well,but thanks for your enlightenments

sam9 · 15th April 2004, 04:13 PM

"i want to couple the audio output of my computer sound card to my stereo deck but "

No problem. I just take a <3.5mm phono>-to-RCA adapter and plug in the "line out" from my Audigy card into the "aux" input of my tuner-preamp.

Then I found a local radio station that also feeds it's broadcast into the internet. First I tun in that station on the tuner-pre, then connect to it via WinAmp. I adjust the WinAmp volume until both are at the same level. (Switching bacj and forth between "Aux" and "Tuner".) I next do the same thibg with a CD player that feeds the tuner-pre directly and withe the CD-R drivre in my PC. After that I no longer use the PC to control the volume - just the tuner-pre. Since the tuner-pre provides the same gain to allources, this ensures that the signal from the Audigy is the same as from any other line source.

BTW, the preamp drives a Slone 11.4 which runs a pair of old but excellent KEFs. Makes any powered "multimedia" system sound like the boombox it is!

19th March 2004, 09:47 AM	#12
Frank Berry diyAudio Member Join Date: Sep 2003 Location: Midland, Michigan	Yes. __________________ Frank

19th March 2004, 04:15 PM	#14
Diode diyAudio Member Join Date: Feb 2003 Location: Oklahoma USA	That would be correct my dear fellow. Just make sure that the volume is down as different headphones have very different sensetivities and very fine headphones will not take a lot of drive signal to be loud and clean. In other words, turn the volume down so you don't take a chance on blowing the headphones. Chris __________________ The best audio is clean audio!

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19th March 2004, 09:39 AM	#11
deji diyAudio Member Join Date: Mar 2004 Location: ibadan	allright i am getting a bit confused are u saying that the jack on my computer sound card where i connect my earphones is at line level

19th March 2004, 10:14 AM	#13
deji diyAudio Member Join Date: Mar 2004 Location: ibadan	and line level is the same thing as preamplifier level,which means i can hook up my earphones to the signal that drives a preamplifier right

15th April 2004, 03:29 PM	#15
deji diyAudio Member Join Date: Mar 2004 Location: ibadan	hi group i tried hooking up the sound card directly as u suggested but it didn;t work out well as in the sound was scratchy so i reverse engineered a goodmans 4210b deck to see what really happens to the auxillary signal applied to the jack at the back.so i constructed the circuit and it worked quite well,but thanks for your enlightenments

15th April 2004, 04:13 PM	#16
sam9 diyAudio Member Join Date: Jun 2002 Location: Left Coast	"i want to couple the audio output of my computer sound card to my stereo deck but " No problem. I just take a <3.5mm phono>-to-RCA adapter and plug in the "line out" from my Audigy card into the "aux" input of my tuner-preamp. Then I found a local radio station that also feeds it's broadcast into the internet. First I tun in that station on the tuner-pre, then connect to it via WinAmp. I adjust the WinAmp volume until both are at the same level. (Switching bacj and forth between "Aux" and "Tuner".) I next do the same thibg with a CD player that feeds the tuner-pre directly and withe the CD-R drivre in my PC. After that I no longer use the PC to control the volume - just the tuner-pre. Since the tuner-pre provides the same gain to allources, this ensures that the signal from the Audigy is the same as from any other line source. BTW, the preamp drives a Slone 11.4 which runs a pair of old but excellent KEFs. Makes any powered "multimedia" system sound like the boombox it is!

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