[quote name='solo4652' timestamp='1396000918' post='2408775']
Oh gawd, I'm getting so confused now. This is an interesting thread on Talkbass: [url="http://www.talkbass.com/forum/f36/di-recommendations-behringer-ultra-di-di100-606401/"]http://www.talkbass....i-di100-606401/[/url] " You don't want a DI, because 90% of the time they do not boost! That's not what a DI is for."
Can I check my BDI-21 at home without a desk to see if it's working? If I plug my bass into the BDI "IN" and then run an XLR from the BDI into my Compact, should I expect to get some giggable volume? I'll go and try it now while my missus is at the stables and report back...
[/quote][quote name='solo4652' timestamp='1396000918' post='2408775']
Oh gawd, I'm getting so confused now. This is an interesting thread on Talkbass: [url="http://www.talkbass.com/forum/f36/di-recommendations-behringer-ultra-di-di100-606401/"]http://www.talkbass....i-di100-606401/[/url] " You don't want a DI, because 90% of the time they do not boost! That's not what a DI is for."
Can I check my BDI-21 at home without a desk to see if it's working? If I plug my bass into the BDI "IN" and then run an XLR from the BDI into my Compact, should I expect to get some giggable volume? I'll go and try it now while my missus is at the stables and report back...
[/quote]
A passive DI box is not a pre-amp, and certainly not a power amp!
Go back to basics. The signal chain for a backline rig is:
Bass --> pre-amp --> power amp --> speaker cabinet
If you want to go through the PA, the signal chain is:
Bass --> DI box (producing a balanced signal through an XLR cable --> mixer pre-amp --> power amp --> PA cabs
You can do all sorts of things with different types of DI boxes, including (with some types) boosting the signal, but a bog-standard passive DI box won't boost, amplify or change the signal other than to convert it from a 1/4" jack unbalanced signal into an XLR balanced signal.
That allows you to plug the signal into a PA channel strip intended for use with vocal microphones. Strips like that include a powerful and (usually) pretty reasonable pre-amp.
Alternatively, you can plug your bass into a DI box using a 1/4" jack instrument cable as usual, and then run another 1/4" jack instrument cable to one of the line level channel strips on the PA. Strips like that include a less-powerful but (usually) pretty reasonable pre-amp.
IMHO the ONLY way you can test this stuff at home is if you have some sort of mixer at home with you. You can't test a DI box by plugging it into your backline.
Given how cheap rehearsal room time is (even in London most places charge roughly £10 an hour) why don't you just set aside the first hour of your next rehearsal specifically for equipment testing and working out which settings do what?