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Do U Pre or Post preamp from line out to board ?

Your amp's character isn't changed by the pre/post switch. The switch changes where the DI taps the signal: Pre takes it DI before it hits your amp's EQ section, post takes it DI after the EQ section. So the tone/character of your DI signal is what's changed with the switch. Your amp's output is always post DI unless you have an EQ bypass arrangement built into it.
 
Wondering what is best, pre or post preamp to the board. If I go post I use the -40db and pre the 0db right ?
I played a gig with no soundcheck, after the first song the soundguy came up on stage and put a mike in front of my cab saying the signal from my line out was too hot.

After reading what the soundguy did, either he has a POS console, which shouldn't be your problem, or you have the wrong soundguy. If he didn't have enough pad in the POS console input gain control, he should be smart enough to carry some external pads with him for when he runs into this. What happens when he has to use a playback device that has no playback gain controls (like most Denon CD players)? Does he mic that, too?

I'm not knocking the mic'ing-the-amp technique, that's another topic. I'm knocking the method that the soundguy used to solve a stupid-simple problem.
 
I've never liked di in the first place, we as players work hard to get our tone which our cabs are a part of. Sending it di takes the speakers out of it and then sending pre eliminates the pre amp so our sound is not heard by anyone but us. No way, " sorry my di is broke better mike it".
 
The affected signal from my BDDI goes into the sound guy's DI. I guess that counts as post preamp, even though it's not my amp's preamp.

Just curious as to why you would run your BDDI into another DI? Should be able to run directly to the mixer.

FWIW, that's exactly what the SansAmp products are designed to do. I use the affected signal and pretty much keep the mixer channel flat.

Riis
 
Just curious as to why you would run your BDDI into another DI? Should be able to run directly to the mixer.

There's usually more than one band playing, sharing the same (not miked) bass rig, so everyone running their jack to the sound guy's DI is a good system everyone can understand and work with. I don't bother rocking that boat as long as I get to use my BDDI as a preamp before the FOH. Moving more cables makes the switch-over between bands more complicated than necessary.

Edit: and once the drums kick in, I can't hear any difference between DIs.
 
I've always gone post. Never had any complaints by sound guys. Perhaps my moderate EQ [all at 12 on my 1001RB-II] doesn't cause much of a problem for them.

But as my bass a a cheap piece of crap, I'd rather get the most good a sound I can manage, before the soundguy starts playing with it. Similar thinking to when you record something. You want to record as best as you can right away, so you don't have to fix it during mixing. I don't want the soundguy to have fix my sound. Just mix it.
 
I give the signal from my bassbone which is generally set flat. When I do sound for someone else, I generally have them use my DI before their amp. This is of course also dependent on the event. Of it is 1 band multiple sets and time for a thorough ringing out then i'm game. More often than not, it is multiple bands, very little setup/change over time and badly tuned drum sets. My philosophy is to spend the time where I can get the biggest return in terms of the mix. Unless the guy is sending me crap signal, the bass is easy. Drums can be a 'nother whole thing... You really wouldn't believe how many badly tuned kits are in use...
 
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Radial JDI. It has a speaker feature. You just hit the speaker button and the -15 pad and bam! It then emulates a 12' driver. Sounds great too. My friend opened for us this past weekend and played through my rig so I was able to stand back watch, listen and enjoy my set up for once. I got the DI off of ebay for $100.

The direct out on my SVT is useless, always has been.

It's also funny watching the sound guy scratch his head wondering if I don't know what I'm doing. He agreed though it was the better bass signals he'd worked with.