i have some problems with my sound blaster

i have a sound blaster x-fi titanium (not hd) pci-e.
i have configured alsa (under /usr/share/alsa/alsa.conf)
defaults.pcm.dmix.rate 96000


i have also installed pulseaudio and i have configured it for 24 bit and 96.000 Hz
under /etc/pulse/daemon.conf

default-sample-format = s24le
default-sample-rate = 96000
alternate-sample-rate = 96000
default-sample-channels = 2
default-channel-map = front-left,front-right

i want to digitalize my vinyls and i use the line-in of my sound blaster (i have a sansui au-317 with a turn table sr-222)
but the volume of line-in (in audacity is disabled) and sometimes is too low.
what can i do?
thank you very much