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Posts: 13303
Location: Latitude 39.56819, Longitude -105.080066 | An easy test would be to pull the electronics out of your O. Then you got a nice soundhole on top to project right into your face.
If you like it, please send me the electronics for proper disposal. |
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August 2005
Posts: 3736
Location: Sunshine State, Australia | Originally posted by Tupperware:
I've had people listen to me play two guitars and tell me which one they prefer Hey Dave, I know you're multi talented... but this I've gotta see. |
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Posts: 2804
Location: ranson,wva | i think a soundhole at the waist on a 'o would be the ideal place if you wanted to project towards your ear...jason |
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September 2005
Posts: 44
Location: Port Charlotte, FL | http://69.41.173.82/forums/showthread.php?t=89963
is a link to an interesting discussion about soundports. I added (or removed one)to a Washburn guitar and am pleased with the result.
Not only can I hear the guitar better, but there's a bit more forward projection also - the comments by Tim McKnight and his decibel meter are linked also.
Cheers, Pete |
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October 2005
Posts: 4083
Location: Utah | Originally posted by Mark in Boise:
I play for my self almost 100% of the time--for good reason. No one else wants to listen. I've found that a few beers makes the audience appreciate my playing a whole lot more. The more they drink, the better I get! |
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January 2006
Posts: 387
Location: Whitecourt, Ab | How about dual sound holes, with removable solid covers...eg if you wanted to hear yourself play, cover the f hole and open the hole on the upper facing side, and if you wanted projection, cover the side hole and open the f hole |
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October 2006
Posts: 5576
Location: big island | Originally posted by rededdie:
How about dual sound holes, with removable solid covers...eg if you wanted to hear yourself play, cover the f hole and open the hole on the upper facing side, and if you wanted projection, cover the side hole and open the f hole now that's a thought, hey.
and thanks for just using the letter "f" and not spelling the whole word! |
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October 2006
Posts: 5576
Location: big island | not long ago, i cut a rectangular hole in the up-shoulder of my j-200 in order to install a fishman prefix problend. the j-200, being jumbo size, pumps out a lot of volume anyway, but before i installed the electronics i played the guitar awhile and enjoyed hearing the music coming directly at me and balanced between both ears. soundports are a very viable idea for guitars, mandolins and ukuleles. for some reason, i cannot imagine one on a banjo though. |
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Posts: 3736
Location: Sunshine State, Australia | A sound hole for a banjo is similar to a grave. About 6' deep is sound enough. |
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April 2006
Posts: 972
Location: PDX | 
and
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gh1 |
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October 2006
Posts: 5576
Location: big island | Originally posted by muzza:
A sound hole for a banjo is similar to a grave. About 6' deep is sound enough. :p |
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December 2001
Posts: 7247
Location: The Great Pacific Northwest | My Traveler (no Ovation, but the Traveler" guitar has sound powered headsets... basically a stethoscope with the receptor embedded under the bridge. It does surprisingly well. |
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December 2004
Posts: 1673
Location: SoCal | Here are the pictures from John (bauerhillboy)
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October 2006
Posts: 5576
Location: big island | wow! nice job, John. it seems that acoustically the sound coming out the front of the guitar would lose some "compression" thus reducing the projection. perhaps sound wave properties do not function the same as, say air or water. |
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February 2004
Posts: 1634
Location: Warren,Pa. | No scientific testing was done (nor were any animals harmed) to get to this point. I simply started with one hole and kept going. Things kept getting better as I kept drilling.
Big chance to take with a Std. Elite LX NEB but, hey...what's the worst that could've happened? I LOVE the results.
John <>{ |
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Location: big island | sure is purty!
what kind of drill bit(s) did you use? |
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February 2004
Posts: 1634
Location: Warren,Pa. | I called Kim Keller and he discussed it with the guys in the shop, Since he had some thoughts on how to proceed, I took that to mean he didn't think I was a total idiot for trying this. Emboldened, I moved forward.
I started out by drilling the largest hole you see, closest to the preamp. I used a NEW Irwin spade bit...the kind with the points sticking out on both ends. It drills a starter hole in the center, then begins scraping a circle in the fiberglass with the 2 outer points. I had the cordless drill on SLOW and was careful to keep those 2 points scraping at equal rates. I held my breath for the duration...about 1 minute. Very neat cut.
I had intended for this to be the only hole I'd drill. As I played I liked the sound I was hearing, but I felt the hole was too far down the guitar to direct sound at my ears. I also felt I needed more holes to give me more sound. I thought for a few days.
After considering more drilling, I felt I wanted the pattern of holes to mimic the holes in the top. I thought this would result in something that looked "factory" done, rather than some schlocky home made attempt. (I have had several folks ask me if the guitar came that way).
I briefly considered making the holes the exact same size as the top holes so I could use AirLocks if I wanted, but I abandoned this idea because the drill bits don't come in those sizes. Also, The only reason to use Airlocks would be to increase the volume to the top holes, and this (as it turns out) is not an issue.
Measuring carefully for the centers of the additional holes, I drilled the next larger hole with a slightly smaller spade bit. This went well.
The smaller holes were a different story. Since the bits with the outer points are not available in those small sizes, I used regular drill bits. This was a mistake. This fiberglass is thin. While these holes don't cause any kind of structural problem, the area you're working with "flexes" slightly. Regular drill bits start out OK till the outer edges start to make contact. At that moment, the outer edges of the bit pull up on the point of contact and bend the fiberglass. The close proximity of the holes made drilling scary, and I did wind up with one crack in the fiberglass between 2 of the smaller holes. If I were to do it again, I'd ude a small spade bit to drill the small holes. It wouldn't have the same scraping action as the larger bits, but similar.
I won't do this to my '97 Collectors', but I may do it to the Pacemaker. This would be different since it has a hand-laid bowl rather than the injection-moulded one. |
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Posts: 5576
Location: big island | http://www.dreamguitars.com/preowned/acoustic/Alberico_OM_2004.html
check out this soundport |
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March 2005
Posts: 1421
Location: Orange County, California | OK, Everybody grab your propeller-hats & pocket protectors...
Originally posted by Lanaki:
it seems that acoustically the sound coming out the front of the guitar would lose some "compression" thus reducing the projection. Remember, The top is the SOURCE of the vibration (and sound) in an acoustic guitar. Anything (including internal air volume) the hinders it's movement, affects the sound we hear. Unless you had a large hole on the top near the edge AND a large hole near the edge of the side where you could get some "cancellation" of sound-waves meeting each other around the corner out of phase, "side ports" should have no affect. I'd have bet they would improve the projected sound on some guitars by letting the top move more freely at certain frequencies, but then I look at that huge center hole, and slide right back to reality. |
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Posts: 2804
Location: ranson,wva | all ready wearing mine fred...lol jason |
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December 2003
Posts: 13997
Location: Upper Left USA | Master Templeman orated on this and gave the name of theologian responsible for this formula over the effect of tone from back pressure in a semi enclosed sound system.
A prize to the one that can pull it out of the archives! double credit if you have less than 100 posts! |
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October 2005
Posts: 5332
Location: Bluffton, SC | Triple credit if you have a couple glasses of merlot in you... |
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August 2004
Posts: 604
Location: Tampa, FL | I believe you are referring to his discussion of Hemholtz frequency
I believe I'll need abeer after this |
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August 2004
Posts: 604
Location: Tampa, FL | And I probably have way less than 100 meaningful posts...
about the same as number as cliff :eek: , but my content density may be higher. I'll go away and be quiet now... |
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Posts: 5332
Location: Bluffton, SC | ( :D :D ) |
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Soundhole in the guitar side?
