The X-Ray Thread

Discussion in 'Electric Instruments' started by ]-[@n$0Ma☩!©, May 22, 2012.

  1. MA Pete

    MA Pete Singlecut Addict

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    My 7.5 pound Sunburst 245 was most definitely weight-relieved! ;)

    It has been common knowledge that SC 245's and SC 250's have been weight relieved since '07 or so, has been discussed to great lengths on BAM and confirmed.

    This was said to have gone on through 2010, if you recall, one of the selling points for the SC 58's was that they were NOT weight relieved, unlike the SC 245's before them...
     
  2. tdarian

    tdarian Searching for the sound

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    Exactly as I understood it to be, Pete.
     
  3. george johnson

    george johnson wielding the wood & wire

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    lol... I wasn't looking to cause a dust-up here, Donnie.

    I was just answering your question using the best reference I have (personal
    experience as opposed to something I read somewhere, or saw in an x-ray).

    Peace Out
     
  4. tdarian

    tdarian Searching for the sound

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    Could Shawn clear this up? His answer was not definative...it was more along the lines of "as far as I know".

    My very clear recollection is that the SC245s were all relieved as Pete has said with the wood library exception. I'm not good enough to hear the difference but my sample size is too small, kinda like I find the Pattern neck to be, regretably.:(
     
  5. Taller

    Taller New Member

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    I remember there was a time when the word was that the 245's were not weight relieved. Then there was a contrasting opinion that was soon taken to be gospel. This is one of those goofy tidbits of information that has swirled around for some time now. It would be nice if there was official confirmation one way or the other from PRS.
    Doesn't make any difference to me - my 245 is the best sounding/playing LP style guitar I've ever had the pleasure of owning.
     
  6. tdarian

    tdarian Searching for the sound

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    Again, we do have a member of this forum and a participant in this thread who I believe is empowered to remove any doubt, at least where there is certainty,.

    And FWIW I agree with Taller about the SC245...it has fended off numerous TEDs (difficult!) and even more SC58s (with ease!). Relieved or not...I'm only curious but do not care beyond that curiousity. Shawn, can we get more definative than "But as far as I know..."?

    Thanks!
     
  7. ]-[@n$0Ma☩!©

    ]-[@n$0Ma☩!© Der Hans der kann's

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    The is the X-Ray thread.

    Let's just zap your SC245 with some high-energy electromagnetic waves and see! ;)
     
  8. tdarian

    tdarian Searching for the sound

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    This might be a good time for straight answers.
     
  9. ]-[@n$0Ma☩!©

    ]-[@n$0Ma☩!© Der Hans der kann's

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    So... you're going to take my thread (that was supposed to be fun) and brow-beat it with some left-over energy from a different topic?
     
  10. tdarian

    tdarian Searching for the sound

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    No, I finally got over the nebulous answer that I got about the frets. Just would rather not pay for a sexray.

    Edit: I promise I won't be ticked if the SC245s turn out to not be, or to be, weight relieved. If the photos reveal that a scalpel was left behind in one of the cavities, that would be a novelty.
     
    #30 tdarian, May 30, 2012
    Last edited: May 30, 2012
  11. ]-[@n$0Ma☩!©

    ]-[@n$0Ma☩!© Der Hans der kann's

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    Yet another issue from a different thread. I can't imagine PRS is going to detail all of their trade secrets on this site (or anywhere else) - but I certainly understand your desire to know.

    I dunno, man. A "sexray" sounds like a good time to me. How much are we talkin'? :)
     
    #31 ]-[@n$0Ma☩!©, May 30, 2012
    Last edited: May 30, 2012
  12. tdarian

    tdarian Searching for the sound

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    That depends. Do you want the optional run through the Orgasmatron first? (I highly recommend it!)
     
  13. ]-[@n$0Ma☩!©

    ]-[@n$0Ma☩!© Der Hans der kann's

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    Well YEAH!

    (How's that for a straight answer!)
     
  14. george johnson

    george johnson wielding the wood & wire

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    Yes please.
     
  15. LSchefman

    LSchefman Hears Tones

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    While we're at this discussion, I need to be X-Rayed, Sex-Rayed, Orgasmatroned and Weight-Relieved.

    Do I go to the PTC for that?
     
  16. Goldtop

    Goldtop A Top (and Heart) of Gold

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    [​IMG]

    Speaking of Orgasmatron...

    Goldtop
     
  17. Fox77

    Fox77 New Member

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    Well, my SC250 came with "operating instructions" by PRS that state that the guitar has tone chambers. It's from 2007. I can look up the exact date when it was finished, but I assume it must be one of the early ones then.
     
  18. rschleicher

    rschleicher New Member

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    I have a more general question (or questions), just out of curiosity:

    I assume that the weight-relief "channels", as well as the larger semi-hollow cavities, are routed out from the top side of the main body wood, prior to the top piece being glued on. (I don't see any other way to do it, basically.) Presumably at least the top surface of the main body has already been planed. I would also assume that the locating holes would have to already exist on the body, so that the CNC machine knows where to route. Then after the top is glued on, then you can do top-side carving/routing (both of the top carve, as well as the pup cavities, holes for the pots and switches, etc.), as well as the bottom-side carving/routing (for the trem cavity, controls cavity, etc.). Is this the basic sequence?

    With my CU24, it doesn't seem like any routing needs to be done before the body and top are glued together. In other words, I think everything can be routed from the top or bottom of the body/top sandwich, after the maple has been glued to the mahogany. Is this true for all of the double-cut guitars, or everything that isn't weight relieved or semi-hollow? I suppose that the wiring channel on the SC guitars from the pup switch to the control cavity might still need to be pre-routed before gluing the top wood onto the body...

    The virtual tour of the PRS factory, in the section that talks about body construction, seems to just show the double-cut process, where it doesn't appear as if any routing is needed before the top wood is glued to the bottom wood. But I hadn't really thought about the fact that it's more complicated for any guitars with weight-relief or semi-hollow bodies, and that even a "solid" SC guitar still has to have the wiring channel to the switch routed out.

    Or am I misunderstanding how my CU24 was built, and there is in fact some amount of body routing that had to be done before the top was glued on, even for this non-weight-relieved DC guitar? You still have to create a wire-channel from the pick-up cavities (routed from the top) to the control cavity (routed from the bottom) - is this done via a horizontal (or mostly horizontal) drilling step? Or were these channels actually routed before the top was glued down?

    Obviously there is no real need for me to understand this - I just find it interesting!
     
  19. tdarian

    tdarian Searching for the sound

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    Someone should go into those chambers and free the tone, man. It's been fermenting in there long enough.
     
  20. JMintzer

    JMintzer Bobble Head Moderator
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    Not sure about the weight relieved routes, but the semi-hollow guitars are routed from the back, and a mahogany cap is glued on. You can tell if a guitar is semi-hollow two ways.

    1: The belly carve is much shallower.

    2: The body is a bit thicker, almost McCarty thickness. You evan ss the additional thickness if you look at the jack plate.

    Here is a typical CU-22. Note how the jack plate extends up into the maple cap...

    [​IMG]

    Now, here is a semi-hollow CU-22. Note how the jack plate ends beneath the maple cap...

    [​IMG]

    Also, on lighter stained backs, you can sometimes see a very faint seam where the cap is attached to the back of the guitar...

    Hope this helps...


    Jamie
     

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