Not a metal player, but when I saw Arch Enemy it clicked.
Pick style, guitar-riff doublin' metal bass is all about filling out the frequency spectrum. Those down-tuned guitars shine in the mid region. You scoop the mids out of a bass, throw on a bit of overdrive and play pick style, now you have a nice loud cradle for the drums and guitars to sit in. People are hearing the guitars, but they're FEELING the bass. Trouble is, this doesn't usually translate on a recording.
Go see a top-notch metal band live though.
Pick style, guitar-riff doublin' metal bass is all about filling out the frequency spectrum. Those down-tuned guitars shine in the mid region. You scoop the mids out of a bass, throw on a bit of overdrive and play pick style, now you have a nice loud cradle for the drums and guitars to sit in. People are hearing the guitars, but they're FEELING the bass. Trouble is, this doesn't usually translate on a recording.
Go see a top-notch metal band live though.