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DIY preamp to be used with Delta 1010 card

Discussion in 'Preamps / Channel Strips' started by igotnosmoke, Sep 19, 2008.

  1. igotnosmoke

    igotnosmoke Active Member

    Hi guys, i have just finished building a baby animal preamp kit to use with my Delta 1010 soundcard. I was wondering the best way to connect to the soundcard and whether there are any settings in the control panel to allow me to optimise the quality of my recordings.

    Would i imagine its a means of simply going from the baby animal preamp output to the RCA input of the Delta card?

  2. Boswell

    Boswell Moderator Distinguished Member

    Assuming you really have the Delta 1010 and not the Delta 1010LT, take balanced leads from the pre-amp outputs into the 1/4" TRS jacks of the Delta 1010. Use the +4dBu switch settings.
  3. igotnosmoke

    igotnosmoke Active Member

    sorry it is in actual fact the Delta 1010lt that i own...

  4. Space

    Space Well-Known Member

    The manual has these answers. Also, there should be a Delta 1010lt configuration icon in the system tray that allows some of the quality changes you may want.

    Channel 1 and channel 2 have d.i.p. jumper controlled switches directly on the card. They can be configured for -10 or +4 of these two channels and only these two channels :)
  5. Boswell

    Boswell Moderator Distinguished Member

    To take an unbalanced output from the Baby Animal, you need to use only pins 2 (hot) and 1 (ground) on the output XLR. Feed these into the phono (RCA) connectors on channels 1 and 2 of the Delta 1010LT and set the level switches to +4dBu as Space advised.

    You may get some low-level hum in this configuration, in which case we will have to experiment a bit more with the interconnect and the powering.

    Be warned - the BA is capable of producing large outputs, and it is easy to overdrive the inputs of a Delta 1010LT. You won't do any damage, but you won't be able to run the BA as hot as you would normally want to do unless you attenuate the output.

    Which Baby Animal kit have you built, which op amps are you using and which power supply?
  6. igotnosmoke

    igotnosmoke Active Member

    thanks for your advice guys, i haven't yet looked into adjusting the jumpers of the Delta.. i will give that a shot

    it is the baby animal dual featuring a JLM99V Opamp and OEP262A3C input transformer... do you envision there being a bottleneck regarding gain even if set correctly??.. if so.. i would consider buying a new sound card.

  7. igotnosmoke

    igotnosmoke Active Member

    to add to that.. i am using the power supply provided by JLM (48v 380mA 18W SMPS 90v to 250v) specific for 2 preamps. However only will be using one.
  8. Boswell

    Boswell Moderator Distinguished Member

    It should work well and give a nice warm sound. You will have to wait and see if there are any hum issues.

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