NAD-DG30 Custom Rig

Discussion in 'Amplifiers' started by WeFixFlats, Jun 1, 2017.

  1. bodia

    bodia Authorities said.....best leave it.....unsolved

    Joined:
    Jan 21, 2015
    Messages:
    7,329
    Likes Received:
    4,607
    Me either. We should do something about that.
     
  2. jfb

    jfb New Member

    Joined:
    Dec 1, 2012
    Messages:
    6,541
    Likes Received:
    458
    Hey, Flats. Can Bodia and I come over to play?! :p
     
    bodia likes this.
  3. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    Here's a taste of what this amp sounds like played by the man who helped design it:

     
    #23 WeFixFlats, Jun 4, 2017
    Last edited: Jun 4, 2017
  4. Boogie

    Boogie SuperD

    Joined:
    Apr 26, 2012
    Messages:
    3,444
    Likes Received:
    1,379
    After watching that video again, and Mrs. B going to the grocery store, I had to turn up the SuperD with Mr. Clean...and the Reclaimed Vela...and Cu24...and Les Paul...for about an hour. The neighbors across the street gave me the thumbs-up, then left the neighborhood. :oops:

    I'd love a comparison play-date.

    I also play a small venue next weekend, which sounds like the perfect place to take the 2x12 and practice what I preach.
     
    #24 Boogie, Jun 4, 2017
    Last edited: Jun 4, 2017
    bodia likes this.
  5. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    That video slays me. Great player, great amp and guitar, great tone all around.

    It does sound exactly like the amp sounds in person, if set up the way Grissom does it.
     
  6. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    Here's the pedal he briefly talks about that sits after the EP Booster but before the Telos/Psionic Audio...



    A little too 'pricey' for me...
     
  7. dkilpatrick

    dkilpatrick Makes guitar faces

    Joined:
    Oct 11, 2015
    Messages:
    654
    Likes Received:
    493
    Hey!
    I was there, I got to hear it in person.

    Sounded amazing in the room
     
  8. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    Update: After the initial "Holy Smoke what an amp~!"...we did further listening tests. First off, this amp should be 'high fidelity/recording studio' with no 'normal distortion'. Well as I began to listen very closely there was abnormal audio distortion. The problem was heard when doing 'double stops' high on the neck(10th fret and above) on the D and G strings by the way.

    So, what's the action plan?

    I replaced, all at once(shotgun method) the four preamp tubes(V1,V2,V3,V4,(ECC83S,ECC81,ECC83S,ECC83S) RIGHT to LEFT (V1 is closest to the input jack) as described in the Sewell Technical Notes with 'known good' spares=No Change. Further reading in the notes, the recommended power tube replacements are: Sovtek EL34M. (Did confirm with David Grissom, himself,via a text message he uses these in his live rig). And not the ones that came originally installed from PRS in my head=6P14P-EV/7189. The last bias readings I measured from these, left to right were: 38/38/36/38. Rather than order the same model power tubes, from an unknown vendor on eBay, I ordered four(4) of the Sovtek EL34M's from The Tube Depot, 'no burn in, no matching' to save time and money. Installed those, today, and let the amp warm up for 15 minutes, new bias readings from left to right: 35/36/35/36. Nominal is: +/- 35. Next the 'audio' test. Well, well, well, no audio distortion==High Fidelity Achieved~!.

    Final test was to use the "Les settings". Boom Goes The Dynamite~!!! Now THIS is the real deal.

    I hope this information will be helpful to anyone considering buying this amp and learn from my experience.
     
    #28 WeFixFlats, Jun 7, 2017
    Last edited: Jun 8, 2017
    Boogie and bodia like this.
  9. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    Excellent post - glad you dug the settings!!
     
  10. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    Two Stacks of Fun...

    [​IMG]
     
    #30 WeFixFlats, Jun 8, 2017
    Last edited: Jul 9, 2017
    Boogie, bodia, FJ4 and 1 other person like this.
  11. bodia

    bodia Authorities said.....best leave it.....unsolved

    Joined:
    Jan 21, 2015
    Messages:
    7,329
    Likes Received:
    4,607
    That's some juicy goodness right there!
     
  12. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    I wonder if we're somehow related...

    [​IMG]
     
    WeFixFlats likes this.
  13. dsenoj

    dsenoj Old dude in a PRS T-shirt

    Joined:
    Aug 31, 2012
    Messages:
    481
    Likes Received:
    215
    Looks like "Brothers in Amps" to me.
     
  14. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    Ha! Someone should tell Knopfler to mod his song...
     
    dsenoj likes this.
  15. jfb

    jfb New Member

    Joined:
    Dec 1, 2012
    Messages:
    6,541
    Likes Received:
    458
    Dude, that's sexy.
     
  16. Boogie

    Boogie SuperD

    Joined:
    Apr 26, 2012
    Messages:
    3,444
    Likes Received:
    1,379
    If that room isn't 60'x40', there's a whole lotta deafness going on in there! But it's gorgeous.
     
  17. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    If you've got one of these then here's the benchmark:

     
  18. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    Yup, provided that you set your guitar a certain way. Grissom doesn't like much treble, and if you look at his guitar tone control setting, it's 0.

    I like a bit more treble, so in my studio I generally use the bright switch on, set the amp the way Grissom does, except I set the treble around 6.

    Also I run the guitar pickup volume control around 6-7, and the guitar tone control between 6-9.

    One thing about the amp is that it really sounds its best with the Master wide open, unless the gain is up to 7-8. At that point the Master doesn't kill the tone.

    Also my room isn't bright sounding; I have sound absorption. In a brighter room, I'd probably switch off the bright control and reduce the treble as well.

    Just my two cents, of course!
     
  19. WeFixFlats

    WeFixFlats Respect The Clave

    Joined:
    Jun 1, 2014
    Messages:
    1,049
    Likes Received:
    457
    After experimenting around, there is one modification/customize change I'd make to this amp.

    A single two button footswitch that would turn both the Reverb and Clean/Boost features on and/or off. That way you could select either the internal Reverb tank or use a pedalboard Reverb effect. And the same with the Boost feature, so you can switch between 'Clean or Boost' on the fly.
     
    #39 WeFixFlats, Aug 13, 2017
    Last edited: Aug 13, 2017
  20. LSchefman

    LSchefman Hears Tones

    Joined:
    Apr 26, 2012
    Messages:
    17,751
    Likes Received:
    4,600
    I'd imagine those would be desirable features for a number of players.

    Doug Sewell and team might be willing/able to do the mods; it'd be worth contacting them to find out if they're possible. I'd imagine the reverb tank would be pretty easy, but the boost might not -- I'm not sure it's a typical boost circuit.
     

Share This Page