[linux-audio-user] recording guitar - level problems

Ken Schutte kschutte at csail.mit.edu
Thu Feb 23 12:39:44 EST 2006


Brett McCoy wrote:
> Ken Schutte wrote:
> 
>> I've setup a new FC4 system with alsa, jack, etc, and a SB Live card. 
>> I'm trying to play some guitar thru the line in (eventually into 
>> sooperlooper, maybe audor, etc).  No matter what I've tried, if I try 
>> to get any significant volume, it's distorted terribly (not to mention 
>> some terrible humming - something else I have to look into yet...)
> 
> 
> What kind of guitar are you using? What kind of pickups?
> 
>> Are there any simple guidelines for getting a nice clean guitar sound? 
>> Could any one point me in the right direction? or any good references 
>> out there?
>>
>> There's seems to be a lot of places to set the levels: guitar, amp, 
>> alsamixer (capture, line in), but I feel like I've tried it all.  I'd 
>> like to go thru my amp first, which has a line out and headphone out. 
>> I'm also willing to invest in some new hardware if that's what it takes.
> 
> 
> I personally don't recommend going direct into the sound card with a 
> guitar, you should at least use a pre-amp or something to boost the 
> signal, since the level coming from the pickups is very low, and the 
> pre-amp in the sound card can be easy to overdrive with a guitar. 
> Something like the M-Audio Audio Buddy or one of the ART MP tube 
> pre-amps (both are relatively inexpensive) might be good for some 
> things, although a real guitar pre-amp is ideal (and expensive). You can 
> also get modeling pre-amps, like the Behrenger V-Amp (only $99 from 
> Musician's Friend) or the Line 6 PODxt (about $299) -- these allow you 
> to model amplifiers, microphones, rooms, etc., as well as give you a 
> variety of effects and tone options. These are great for recording with, 
> and you're neighbors will appreciate it also. :-)
> 

The more I think of it, I not too concerned with using my amp (and I'd 
rather not have to mic it), so if I could do everything in software that 
would be great - I'll definately check out that CAPS plugin.

I'd been trying:

   guitar -> amp ; amp line out -> soundcard

and having the problems that I mentioned.  I felt like I tried all the 
adjusting of levels, but I'll try some of the tips I got.  Most likely, 
I'll try and pick up a little preamp, and do:

   guitar (PRS/mccarty pickups) -> M-Audio Audio Buddy mic preamp -> 
SBLive Line in -> alsa/jack/caps/etc

Thanks everybody for all the responses!

Ken



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