Rebel1 wrote:
> I'm using the internal audio controller on the Asus M3A76-CM mobo, not a
> separate sound card. For many months it worked okay; now the sound
> levels from the speakers are far too low (maybe by 10 dB) for external
> signals (like from my FM receiver) applied to Line Input port on the mobo.
>
> On the mixer, Line In is selected and its gain and the master volume are
> both at max. I've tried reinstalling the VIAHDaudio driver. No luck.
>
> Sound levels from internal programs like Winamp and Windows Media
> Player, Real player, etc. and from my DVD/CDRW recorder are all okay.
>
> In the BIOS, there are Onboard Devices Configuration settings. HDAudio
> controller is Enabled. For the Front Panel Select option, it doesn't
> matter if I choose HDAudio or AC97.
>
> Driver details:
> Package Version: 7.4.00.31.via
> Driver Version: 6.0.1.7400
> Codec Type: 1708
> Driver Provider: VIA Technologies
> OS Version: Windows XP Home Edition
>
> XP, Home Edition, v5.1, SP3 and dozens of hot fixes.
>
> Any suggestions? Are there settings in the registry that might affect
> just the Line In? I've searched for VIA and HD, but couldn't find
> anything relevant.
>
> Many thanks.
>
> Rebel1
Have you tried switching to the Microphone port, as a test ?
Maybe the output of the FM receiver is low.
If there was a resistive load across the FM receiver signal,
that could reduce its amplitude. (Like the receiver signal
is running to two places, and is being overloaded.)
I would try connecting another line level signal, and see if
you get good output from your M3A76-CM. Like if an old Walkman
is connected to Line In, do you get full level ? Or is
every line level source you connect being attenuated ?
You can actually use one computer, to deliver a line level signal
to another computer. Using Audacity (sound editor), I can
create a reference 440Hz tone and set the amplitude to 100%
in the waveform editor. With all sliders maxed in the source
computer, I get around a 1.1V RMS signal (as measured on a multimeter)
on Line Out. I can then run that into Line In on a second
computer and verify the amplitude received there. So if you
don't own any other audio source devices to test with, you
can also use a second computer as a "tone generator".
And if this annoys you enough, you can get a $10 sound card
for the PCI bus, and install that. Check to make sure you
have a spare slot, with room to install it. This example
is likely a CMI8738 based card (CMedia). Some cheap
VIA based cards are also shipping.
(Always check the Feedback section, to see if the drivers work...)
http://www.newegg.com/Product/Produc...82E16829128003
Paul