[linux-audio-user] [OT] recording levels (mismatch)

[Erik Steffl]

Mark Knecht wrote:
...
>>>>  I am trying to record from a receiver (not sure if that's the right
>>>>name, it's the amp/tuner, the thingy that all other components like CD
>>>>player, tape deck, video etc. connect to) and it seems like the levels
>>>>are too low (the soundcard is soundblaster live platinum, using alsa
>>>>drivers that come with kernel 2.6.5).
...
> 1V amp PP output  -> 1000 Ohm output <---cable----> 1000 Ohm input
> 
> In the above pirture to voltage the input receiver sees is 50% of the
> voltage actually driven.
...
> This stuff comes up a lot when interfacing studio equipment. This, and
> the levels provided as per the post from Andreas, are generall the
> root cause of this sort of problem.

   that might be the case, I see the signal being at about 20-40%, 
compared to about 50-70% 'normal' signal (in vu-meter).

   the big Q remains - what do I do? (I didn't try the headphones output 
yet, but everybody says that headphones output on the consumer receivers 
is of poor quality (then again, I listened to it via headphones and it 
was good enough for me...)).

	erik