Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13

Thread: External mic preamp use with presnous firestudio

  1. #1
    Join Date
    Nov 2012
    Posts
    242
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    39877

    External mic preamp use with presnous firestudio

    Sign in to disable this ad
    I'm thinking of buying a golden age pre 73 Jr. The present on my firestudio project are way too clean for my liking.

    I have tested out a external preamp before using the line inserts on the combi inputs of the interface but noticed the the gain knob still affected the signal. Should this not be completely bypassed if using a line signal?

    Would it be ideal to leave the gain knob at zero and the signal from the mic preamp alone?
    “Some people never go crazy. What truly horrible lives they must lead.”

  2. #2
    Join Date
    Apr 2012
    Location
    Garland, Tx
    Age
    33
    Posts
    231
    Thanks
    1
    Thanked 11 Times in 11 Posts
    Rep Power
    71861
    Quote Originally Posted by davecg321 View Post
    I'm thinking of buying a golden age pre 73 Jr. The present on my firestudio project are way too clean for my liking.

    I have tested out a external preamp before using the line inserts on the combi inputs of the interface but noticed the the gain knob still affected the signal. Should this not be completely bypassed if using a line signal?

    Would it be ideal to leave the gain knob at zero and the signal from the mic preamp alone?
    You'll want to use a standard 1/4" TS cable out from the preamp into one of your line inputs (channels 3-8 in your case)...I believe these channels will not be affected by the gain knob when using the 1/4" input.

    Someone correct me if I'm wrong.
    "Easy, guys.. I put my pants on just like the rest of you - one leg at a time. Except, once my pants are on, I make gold records." - The Bruce Dickinson

  3. #3
    Join Date
    Jun 2010
    Location
    Douglas, Az.
    Posts
    1,121
    Thanks
    48
    Thanked 75 Times in 74 Posts
    Rep Power
    160593
    Ya, many people choose to bypass the extra analog stage of the level knob. If your pre has digital out, you can, also, bypass one more analog stage. If my line-in are all full, I don't loose a lot of sleep over going into a combi jack - not all interfaces are equal in that regard, though.

    Have fun with your new toy !

  4. #4
    Join Date
    Dec 2002
    Location
    Massachusetts
    Age
    68
    Posts
    3,804
    Thanks
    0
    Thanked 80 Times in 76 Posts
    Rep Power
    9793418
    Quote Originally Posted by dudernut View Post
    You'll want to use a standard 1/4" TS cable out from the preamp into one of your line inputs (channels 3-8 in your case)...I believe these channels will not be affected by the gain knob when using the 1/4" input.

    Someone correct me if I'm wrong.
    Curious why not to use a 1/4" TRS cable since the Pre73 Jr and Firestudio Project both are capable of a balanced connection?

    The gain knobs on the front panel appear to affect the Line ins which would be the 1/4" of the combo jack...
    Attached Thumbnails Attached Thumbnails firestudiol-jpg  
    Mark.......

  5. #5
    Join Date
    Apr 2012
    Location
    Garland, Tx
    Age
    33
    Posts
    231
    Thanks
    1
    Thanked 11 Times in 11 Posts
    Rep Power
    71861
    Quote Originally Posted by arcaxis View Post
    Curious why not to use a 1/4" TRS cable since the Pre73 Jr and Firestudio Project both are capable of a balanced connection?

    The gain knobs on the front panel appear to affect the Line ins which would be the 1/4" of the combo jack...
    You're probably right, actually ...that's why I said to correct me.
    "Easy, guys.. I put my pants on just like the rest of you - one leg at a time. Except, once my pants are on, I make gold records." - The Bruce Dickinson

  6. #6
    Join Date
    Dec 2002
    Location
    Massachusetts
    Age
    68
    Posts
    3,804
    Thanks
    0
    Thanked 80 Times in 76 Posts
    Rep Power
    9793418
    Found this block diagram image for a Presonus Studiolive and it seems to suggest the Line inputs are after the mic pres. Perhaps the Firestudio would be the same(?)
    block-jpg
    Mark.......

  7. #7
    Join Date
    May 2005
    Location
    Alberta, Canada
    Posts
    9,877
    Thanks
    124
    Thanked 180 Times in 165 Posts
    Rep Power
    21474858
    The specs look good on their website. Drive the gain until you get the sound you want then adjust the output on both pre and interface to keep things from peaking. And yes use a 1/4 " TRS cable.

  8. #8
    Join Date
    Nov 2012
    Posts
    242
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    39877
    The gain knob on the interface does indeed affect the signal further. If these inputs are true line then surely the adjusting the gain shouldn't have any effect.

    I've read (forums etc) to leave the interface gain at 0 when using an external as it distorts the signal too much.

    :/

  9. #9
    Join Date
    May 2005
    Location
    Alberta, Canada
    Posts
    9,877
    Thanks
    124
    Thanked 180 Times in 165 Posts
    Rep Power
    21474858
    Quote Originally Posted by davecg321 View Post
    The gain knob on the interface does indeed affect the signal further. If these inputs are true line then surely the adjusting the gain shouldn't have any effect.

    I've read (forums etc) to leave the interface gain at 0 when using an external as it distorts the signal too much.

    :/
    I suspect the manufacturer retained the gain control in the path as all instrument line levels might be slightly different.
    My pre runs about mid-way volume wise in itself, then the line out to my interface.
    SM57 mic on my interface - gain at 2 o'clock. Mic through pre-amp is at 10 o'clock on the interface.
    Both end up at -18 on my DAW.
    Everything would depend on how loud you set the output on the pre.
    The only way to know is sit down for a few hours and do some tests.

  10. #10
    Join Date
    Jun 2010
    Location
    Douglas, Az.
    Posts
    1,121
    Thanks
    48
    Thanked 75 Times in 74 Posts
    Rep Power
    160593
    .." suggest the Line inputs are after the mic pres".

    That's just normal electronics. What might be abnormal is what you can find in pro gear : ) Like with mixer routing. If a interface has the multiple MIC pre, that's normally just on the XLR MIC input and a level knob wouldn't affect the line in, but only the shadow knows for sure.

    "If these inputs are true line then surely the adjusting the gain shouldn't have any effect".

    Any additional component can affect the signal, but it's not a big deal for me to go into a mixer, or, combi jack. Maybe, with a Stereo source & pre, I'd want straight line, or digital.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Presonus Firestudio Mobile and Dual Tube Preamp
    By oldjazztrumpet in forum Free Ads for Music/Recording Equipment
    Replies: 0
    Last Post: 04-28-2013, 06:22
  2. Presnous Audiobox with KRK rokit 5
    By gafadi in forum Newbies
    Replies: 1
    Last Post: 07-11-2010, 16:34
  3. Routing for External Speakers from FireStudio?
    By gvdv in forum Recording Techniques
    Replies: 2
    Last Post: 03-21-2008, 19:06
  4. Help with Firestudio Project and external hard drive
    By keyz in forum Digital Recording & Computers
    Replies: 4
    Last Post: 12-21-2007, 21:43
  5. presnous firebox, and akg perception.
    By h i p h o p in forum Microphones
    Replies: 16
    Last Post: 06-16-2006, 10:39

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •