11 Replies Latest reply: Mar 10, 2013 1:05 PM by Thunderswitch
Thunderswitch Level 1 Level 1 (0 points)

My setup is: G5 w/ 10.5.8, 2.5 GB RAM, LP8, TASCAM US 1800 interface, guitar w/ instrument cable. 

 

The Guitar input is muffled (no highs), but the same setup has no problems in Garageband.  In Garageband the guitar input is nice and clear.  Any ideas why the muffling in Logic?


Logic Studio, Mac OS X (10.5.8)
  • 1. Re: Why is my Guitar input muffled in LP8?
    Eriksimon Level 6 Level 6 (10,835 points)

    No; we cannot see your computer, so we don't know how you have set up your audio hardware, or how you have setup this hardware in Garageband and in Logic, and we can also not see what plugins you may have in use in either program, and we can even not see wether you may have inadvertently altered your pickup switch or turned down your treble rotary or switched out a good cable for a bad one or did not seat any or some or one of your cables sufficiently snug.

    So no, no ideas.

  • 2. Re: Why is my Guitar input muffled in LP8?
    Pancenter Level 5 Level 5 (7,645 points)

    Or whether you have read these chapters.

     

    http://help.apple.com/logicpro/mac/9.1.6/en/logicpro/usermanual/#chapter=2%26sec tion=0

     

     

    Specifically,   "Configuring Your Audio Hardware"

  • 3. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    Thank you, Eriksimon, for having such a great grasp of the obvious--of course you can't see my setup.  That's kind of the point of the forum and providing system specs, is it not?

     

    And Pancenter, thanks for the link, but the US 1800 works perfectly fine with Garageband and is connected and working perfectly fine with Logic Pro 8, EXCEPT that the audio is coming in muffled.  If the guitar cord, the USB cable, or any other wire in the signal chain were loose or not connected correctly, this setup would not function in Garageband, let alone Logic Pro.  The software tracks record just fine and the playback of previously recorded audio plays back just fine.  Please let me be a little more clear:

     

    1.  Logic Pro was installed with the recommended install package and NO additional plug-ins are installed.  This is a vanilla setup with no separate hardware other than the US 1800 interface and the electric guitar.

     

    2.  The guitar and cable work perfectly in Garageband, but come in muffled in Logic Pro--as though the highs have been rolled off, but not like a guitar tone control roll-off; more like an EQ setting or a low-pass filter.  I check my pick-up switch and tone knobs continuously, and the tone knob remains in the full position.

     

    3.  I have checked the channel strip and no EQ is involved and no filters of any kind.

     

    4.  I have checked and re-checked the Core Audio setup in the Preferences window and the US 1800 is the Device selected (remember that in LP8, there is no differentiation between Input and Output Device in LP8 Preferences as there is in Garageband).

     

    5.  This behavior is consistent in both channels 8 and 9 (the guitar inputs for the US 1800), and presents itself when adding a DI box between the guitar and the US 1800.

     

    6.  I asked the Logic Pro guru at Guitar Center yesterday before I posted here and he suggested that there may be a sample rate conflict but had no idea how that could be remedied.

     

    7.  I tried recording this guitar with this input problem using Guitar Amp Pro and ended up having to EQ the crap out of the track to even get it close to a decent guitar sound.  Thankfully, the track used heavy distortion and the tone was not critical to the success of the whole recording.  If it had to be clean guitar, the track would have been unusable.

     

    So, hopefully this info will help to clarify the situation; but, I'm baffled.  The muffled-ness makes no sense to me.  Anyone have any ideas?

     

    Thanks!

  • 4. Re: Why is my Guitar input muffled in LP8?
    Eriksimon Level 6 Level 6 (10,835 points)

    I agree it makes no sense, now that you've given some useful info. Forgive my sarcasm, it wasn't personal; most people provide little to no info, and it still annoys me from time to time.

    But about point 6: the "guru" (aren't they called "geniuses"?) could be on to something: the sample rate set on your Tascam must match the project sample rate set in Logic. This can be found under File>Project Settings>Audio.

     

    Sample Rate setting.png

  • 5. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    The "Geniuses" are at the Apple Store.  I believe Guitar Center calls them "salesmen."    ; )

     

    I have checked my project settings and it is set to the CD standard of 44.1 kHz.  Now, I did uninstall the Tascam driver, restart, download it anew, reinstall it, and restart the G5 before relaunching LP8.  It still has the same issue.

     

    I though that maybe CORE Audio had become corrupted, but if so, it would have affected Garageband as well.

     

    Is there anything else you can think of or am I now relegated to having to do a clean install of Logic Pro itself?  Or should I try going to the Apple Store and speaking to one of their geniuses before I do that?

     

    Oof-da, what a pain.

  • 6. Re: Why is my Guitar input muffled in LP8?
    Pancenter Level 5 Level 5 (7,645 points)

    Thunderswitch wrote:

     

    The "Geniuses" are at the Apple Store.  I believe Guitar Center calls them "salesmen."    ; )

     

    Ha! Yes, I believe that is the case.

     

    This is indeed and odd situation...

     

    Out of curiosity.. with Logic open what are all of the audio devices showing in Logic's Preferences/Device.

     

    You are monitoring through the Tascam of course as Logic can only use a single device, are you monitoring the same in Garageband?

     

    The Tascam comes with a software control Applet, correct.

  • 7. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    Yes it does and here it is:

     

     

    As far as the audio devices, only the US-1800 and Built-in Audio are there.  And yes, I am monitoring Garageband through the Tascam as well.

  • 8. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    Sorry:

    Tascam Control Panel.png

  • 9. Re: Why is my Guitar input muffled in LP8?
    Pancenter Level 5 Level 5 (7,645 points)

    Looks good, stumped... have no idea why it would/could sound muffled, you're recording using the same input channel so there's not an impedance mismatch, you have no active EQ on the master bus of guitar channel strip.

    There can be "Input" Channel Strips that record what ever EQ/FX you have setup, not many know about, or use them.

     

    Does the guitar record muffled on all projects?

     

    Off yo a gig, will check back later-

  • 10. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    Oof!  Just did a clean install of Logic and -- ***! -- now it's doing it in Garageband as well.  Beat me with a stick and call me yo mama!  It's got to be the Tascam.  I'll take it tomorrow to Guitar Center for a try out there and see if the problem persists.  What a dod gam bun of a sitch!

     

    Thanks for the help guys!  I'll be back tomorrow afternoon with an update.

  • 11. Re: Why is my Guitar input muffled in LP8?
    Thunderswitch Level 1 Level 1 (0 points)

    Okay, I A/B'ed the Tascam with an M-Audio Firewire Solo and it is defiinitely the unit.  The Tascam is now in for warranty service.  How about that!