is the speaker on the amp muted? I agree with the post above this one, that this is not an ideal signal path, a bass amp on vocals and acoustic guitar isn't going to boost the right frequencies. But, with all that aside, you may have to make do with what you have until you can afford something different. I would advise a mixer with preamps (cheap ones like Behringer Euroracks 602A or 802A work well enough, Mackies are a class above them, amybe two classes above, but you pay for it). Preamps on their own are ideal, but then we are starting to really talk about money. So: to make your signal path that you have work better for now (I assume you use this because it is the only way you can amplify your vocals or acoustic guitar to get it into the PC?):
can you mute the speaker on the bass amp? Read the manual to see how you can do this, you might need a footswitch,if you don't have a manual, check out the manufacturer's website, they might have it there. The reason you want to mute it is so that the amplified sound isn't bleeding back into the mic which then sends a blend of the original sound (vox, guitar) and the amplified tone., it will start to get muddy that way, or even feedback. Thn you just use the line out of the amp to your soundcard. I use a similar path, but I don't use a bass amp, I use an acoustic guitar/vocal amp (
Peavey Ecoustic 112), therefore it's preamps are well suited to both instruments. If you can't mute the speaker, set the amp up in a different room from where you are actually performing and turn the speaker away from you: you just want to monitor out of SONAR (again, another strong reason for a mixer: better monitoring options)
Once you can figure out how to do this (mute the speaker), then you can monitor the signal you are sending. Turn the amp up as loud as it can go without getting any signal distortion (clipping), unfortunately amps don't usually have clip indicators (most guitarists/bassists "live in clip" through their amps, but you don't want to clip your vox or acoustic guitar, sounds like shit). You are going to have to play around with the settings on teh amp to get the best tone you possibly can. Being a bass amp, you will likely want to roll off the low end a bit, boost the mids and the highs a touch. Make sure that in the strongest passages (when you sing loudest or play guitar the hardest ) you aren't clipping the amp. If the performance is really dynamic, but with distinct sections, it could be worth doing takes of the mellower sounds with one setting on the amp, and then when the heavier/louder sections need to be recorded, you can reset the levels to accomodate it.
The amp is going to give you noise, no doubt. but the best workaround you have at your fingers right now for no money down is to learn to maximize your signal to noise ratio. Mic placement is also an issue: try singing at different distances from the mic to see where the tone is best and where you get best S:N ratio. Same with Acoustic guitar: where are you aiming the mic? I personally like to aim the mic at the 12th fret of the acoustic guitar on a 45 degree angle towards the soundhole
o
--------x----------( ) |
12 soundhole
diagram doesn't really work: but the point is to angle the mic towards the 12th fret towards teh soundhole and the silly line with the x and brackets is schematic of the top of an acoustic guitar
when i only have one mic. Lots of ways to play, but again, teh critical step right now for you is to work on max Signal less Noise.
If you are independently wealthy, then run out an get a Mackie mixer, preamps out your wazoo and a variety of mics. But even then, if you don't have the basics of S:N down, you're still going to record shit. Great equipment only gives great sound when you know how to MAKE great sound.
good luck