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Using an API 3124+ with a Frontier Tango 24...noob problem Multi-Channel Preamps
Old 2nd January 2011
  #1
Using an API 3124+ with a Frontier Tango 24...noob problem

So i recently grabbed an API 3124 that i have connected to my Frontier Tango 24 A/D D/a and then going adat optical into a Digi 003+. Here is my issue...

With the gain level all the way down on my 3124, pad on....my signal clips in pro tools. I cant get a usable signal from kick, snare, overheads...anything. Now i used to have 500 series API 512C's and i tracked drums with those all the time, but never with the Tango 24 in the equation.

I recorded other things with the 3124 like acoustic and vocals and it performs normally i just cant do anything with drums...but i know i should be able to.

I know the API output is +4 dbu and the output on the Tango 24 can either be -10 dbu or +4 dbu. Is this my issue? Should they both be at +4 dbu or should the tango be at -10 dbu?......or is there something that could be wrong with my API or the Tango?

I know this is a noob question, i just havent had a problem like this before.


EDIT: I actually just got a reasonable, controllable signal by using SM57's as my overheads. Prior i was trying to use 2 pairs of AT4033's and Rode NT-5 but i couldnt get anything usuable, just clipping waveforms.
Old 2nd January 2011
  #2
Gear Nut
 
Randyman...'s Avatar
 

The API and most pro gear is capable of putting out VERY high levels. Most of my "Pro" gear is capable of +30dBu and beyond! Most ADC's are around +12dBu = 0dBfs to +22dBu = 0dBfs (some ADC's are referenced higher - but they are generally in another price bracket - like $5K and up).

Then the fact that condensors as Drum overheads and dynamics as Kick/Snare tight mics will have strong levels at the mic output - the API's lowest gain setting is still pushing the level beyond what your Tango can handle w/o clipping.

I'd pad the OUTPUTS of the API into the Tango so you can drive the API's output transformers some. You can of course pad the MIC INPUT - but I tend to prefer driving the output iron for some API flavor. I regularly use -12dB Pads I built from XLR Barrels on most of my Drum Pre's. The API's and most transformer balanced gear likes 600 Ohm Load impedances as well - so you might as well make some 600 Ohm Output Pads and get the output transformer loaded where they don't ring...

Old 2nd January 2011
  #3
Registered User
 

try it and see
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