Latency is a funny thing, meaning I'm not sure if it is a constant for my setup or not. There are times where Take 1 feels like I'm right in the pocket with the band but upon playback I'm like a half second late at the beginning or at the end resulting in garbage. Without any changes I'll do a Take 2, it'll feel the same as Take 1 but on playback my timing is spot on. This makes me wonder if fluctuating CPU usage can cause timing issues.
Do you have a simple process to accurately measure real-time latency?
Either way, bass volume in the mix is to some degree a matter of personal preference and genre. Listening to Pandora on my Sony Receiver, Pioneer Towers and 12" powered subwoofer there are some pop songs where the bass is pushed way back in the mix and could be described as "mushy", while there are some smooth jazz tracks where I need to dial back the woofer gain due to floor joist rattle. I guess my preference is to lean towards the heavier side when mixing in bass partly because the higher register of guitar, keyboard and vocals can easily punch thru. But a level meter in the DAW would make things more consistent. Hopefully RealBand has such a meter.
When you mic your amp and play to loud speakers won't you end up with just one track? Or do you play with headphones?
Latency time is hard to measure with your signal chain. Most interfaces will give you the figure and it can be measured but I'm not sure how with Aud.
Tracking and latency will be slightly better addressed by using headphones to listen to the backing.
I track my bass amp with two mics into my simple interface and listen to the click necessary backing via heaphones from that interface. Close micing means that very little room noise or environmental noise gets into the mic and as I'm wearing headphones from the interface and, for that purpose, they're closed back and ear covering, there's no bleed from them as may occur when doing vocals.
If you'd like to explore these matters to fully suit your set up use the private message option and send me a g'day. We can then chat, investigate talk bass without me hijacking your thread.