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Trying sound ports for the first time
I sent one of my classical guitars to the original builder, to touch up
some french polish and while he was at it, add sound ports., He usually does it like Ruck,, two small ports not all that far from the neck, one bass side, one treble. I thought about asking for a little larger oval port, but i figure i should let him do it the way he always did, since if oval ports screw up , its my fault. I dont know the wisdom of this,, but i will try it for once, any input, opinions, suggestions, etc, would be welcome., Rick |
#2
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What's the advantage I wonder? |
#3
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I think the idea is if there is only a bass side vent, the player will hear mostly bass,, the idea of one hole on the treble side is to balance that out... who knows what the answer is? rick |
#4
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over high or vice-versa. Jim McCarthy |
#5
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You should call him and ask.
To me - not an audio expert I hasten to say - a port placed away from my ears would be useless if there's another one already pointing directly at me. Let us know what he says. Or do you mean he puts one on the lower and upper bouts, same side? |
#6
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I've done a bunch of work on ports over the years. As far as I can tell, it's best used as a monitor for the player.
Adding a port to an existing guitar raises the pitch of the 'main air' resonance, and makes that resonance more powerful. You may not notice either of those effects simply because of the way your hearing works. OTOH, the port also puts out some high frequency sound in the direction it's facing. Since most guitars generally put the highs out toward the front, rather than toward the player, you may not hear much of that sound if you're in a 'dead' or noisy space. Thus the port can give the player some sound that they're not normally going to hear so long as they can actually see it while they're playing. My own experiments tell me that the best place for a port is in the right (bass) side of the upper bout, approximately at the widest point. I don't think you need a very big one to act as an effective monitor: something between an inch and an inch-and-a-half in diameter should do it. I'm trying to run a series of listening tests with players to find out the conditions where this sort of port will be most beneficial, and how much good it can actually do (if any). This is going to take a while... |