Issue with Sansamp VTBass Rackmount DI

Just use one pre and record.
Call it a day

 

I don’t understand why you would do ANY of this to record, as opposed to using separate channels on the recording board to mix.

 

If I'm understanding your signal flow correctly (big if), it should theoretically work how you'd like it to. Maybe your TRS/patch cables aren't wired properly internally?

Can you post a pic of the cables you're using to connect the Carvin to the DBX?

You say you get no sound from the DBX XLR outs, correct? But are you definitely getting sound from the DBX 1/4" outputs?

Is the sound you're getting out of the Carvin DI affected by the DBX EQ? IOW, if you fiddle with the channel 1 EQ can you hear a change in the Carvin DI sound? How about channel 2?

You may expect some hum from the interaction between different devices, which may or may not be resolved via ground lift. But the fact that you've got no output is the bigger issue and you want to make sure you're not inadvertently running inputs into inputs on different devices, which will certainly cause hum and likely eventually cause magic smoke to appear.

 

Disengage Bridge on Carvin.

 

Absolutely, bridge should be off.

 

Contact Tech 21 later today. They have great support. However, broken cables wouldn't be out of the question by any means.

 

Tip send ring return.
Still needs common connections.
Or sleeve ground. Both the send return on the EQ need ground or common connections

Probably just send high/ lows from Carvin to recording interface. Use channel strip in plugin.

Still don't see the need for isolation seperation or so much EQ

Carvin needs 3 ring. Other end would be 2 ring for standard equipment. Send return be 2 wires as shown. Both need common sleeve connections though.

 

Just run your bass into the vt, sansamp signal out to one side of eq to filter off the lows, unaffected output to second eq to filter off highs, each to the two amp returns of the carvin or another power amp. Carvin preamp not used... mic both cabs OR put two DIs after the eqs, before the power amp.
Clean, solid lows with no breakup and gritty highs.

 

I'd run a full bandwidth from the bass to the mixing board in addition as you can always reamp, choosing a different cross-over point later. By all means have the amp live in the room for feel. I DI electric guitar too in case I decide the track needs a different amp. Remember to adjust for latency which I sometimes forget to do...

 

press the 'active' front button of the VT Bass.

 

And still looks like Bridge button is engaged.

 

you better start over

with what you are trying to do

And what is actually working.

Because you are not making any sense
And your picture is different from your diagram.

 

It would be best to test the VT Bass Rack separately. Preferably out of the rack. My guess is that you probably need to use an isolation transformer. Combining all those units that each have their own ground in addition to possible physical grounding through the rack itself will more than likely result in ground issues.