Page 2 of 2 FirstFirst 1 2
Results 11 to 12 of 12

Thread: Reverb pedal causing distortion in sound card input

  1. #11
    Join Date
    Feb 2009
    Location
    northampton uk home of Dr Who and Blackstar Amps!
    Posts
    9,980
    Thanks
    1
    Thanked 666 Times in 630 Posts
    Rep Power
    9279082
    Sign in to disable this ad
    Is it a very early Mk1 2i2. I ask becuase these were known to have very low instrument input headroom. Does the distrotion clean up if you back the volume off on the bass? You could try that and record well down at -30dBfs then boost digitally to prove the matter.

    Quite why the problem has only just surface now I could not say but I suspect a fault in the AI's input circuit, a leaky/short input coupling capacitor* or a faulty op amp. Both faults are however incredibly rare these days.

    I will try to find a specification for the early 2i2 but in the meantime. You don't need a high Z input if using a reverb pedal (does the HZ bit for you) so try the pedal into the LINE input. Failng that, get a cheap passive DI box and go intp the XLR mic input. If that solve the problem (I assume the mic circuit is clean?) you have a choice? Better active DI or new interface!

    Passive guitars/bases you see are "DC coupled" and thus provide a resitance to ground. Unless the input amp is DC isolated the working point can be shifted causing distrotion.

    Dave.

  2. #12
    Join Date
    Feb 2009
    Location
    northampton uk home of Dr Who and Blackstar Amps!
    Posts
    9,980
    Thanks
    1
    Thanked 666 Times in 630 Posts
    Rep Power
    9279082
    Just had a harken...Geeez! Giving it some there lad. The signal is peaking to -4/-5 dB fs and whilst that would be fine on a decent modern AI I think an early 2i2 WILL distort.

    Leave the front panel gain as was then back off the bass volume to get -20dBfs on the DAW meters.

    Dave.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 1
    Last Post: 06-22-2010, 11:58
  2. Replies: 1
    Last Post: 01-20-2010, 02:19
  3. Looking for new distortion/fuzz pedal for my Twin Reverb.
    By elenore19 in forum Guitars and Basses
    Replies: 29
    Last Post: 10-26-2009, 21:23
  4. Linking input of one sound card to ouptput of second card
    By mlamelas in forum Digital Recording & Computers
    Replies: 2
    Last Post: 12-04-2001, 07:17
  5. distortion I think or my sound card
    By BK MANNY in forum Digital Recording & Computers
    Replies: 3
    Last Post: 03-15-2001, 10:21

Posting Permissions

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