Arrow speed vs bow noise.

[LookMomNoSights]

Sound is relative and not all sounds as reactive to the deer.  I'd take the 16fps as the flatter trajectory would help me. And Dacron strings aren't quieter according to many folks I've talked to.  People I know and trust.  Work on the faster string or find a better string builder.

Same here!
your not talking just a few FPS.  You are talking a considerable difference in speed = trajectory / cast.
Sounds like the sound level is NOT a considerable difference ..... but more negligible.  Given such,  I would opt for the improved trajectory that comes with the increase in speed.
I'm with GCook on this .......... maybe do not give up on the "faster" string.  Keep tinkering, and yes maybe a different string buidler too.

[George Tsoukalas]

Sound travels at 1050 fps. That's quicker than any of my bows. Jawge

[Tim Reese]

Personally that’s one reason I love longbows. Specially ASL’s. There sooo quite it’s scary. Add a good stout wooden arrow and look out!

[Bowhunter57]

Traditional bows are not "hot rods".
I would much prefer a perfectly tuned bow that shot accurately and quietly on both percentages....and it should. 90% of trad shots are inside 20 yards, so a few feet per second gain isn't going to kill the deer any quicker/better.

[Tim Finley]

why not put silencers on th dyna flight ? maybe try cat whiskers they dont really slow down the string and they work very well  they will still hear you but may not react as much .

[Wudstix]

Para cord sheath material works for me, and is extremely light weight.  4x2" is 10-12 grains. 
 

[Wilderlife]

My thinking has always been that if a deer can jump the string of a compound, no amount of extra speed with a trad bow will make a difference. This is speaking specifically in terms of a deer hearing the bow go off.

If a flatter trajectory gives you a slightly further point on and you can shoot an extra few yards more easily, then I'd say go for it, as long as the noise isn't such a huge jump up that the bow sounds terrible.

My preference has always been for a heavier arrow as it makes the bows nicer to shoot and quieter. Having said that, it's hard to get arrows heavy enough sometimes as we aren't exactly spoiled for choice with components down here. Current arrows for my main recurve are 600gn and the bow is 62# at my draw length. I haven't chronographed them and I don't really care as they fly nicely and hit hard. Those arrows aren't available anymore so when I buy some new ones I'll be closer to 550gn which will be noisier, but my trajectory will be better to deal with in some ways.

I think more about quiet when I use my longbows as they're even slower than my recurves but they are super quiet right off the bat. The whole point of them for me is getting as close as possible and letting an arrow go almost silently.

[Wheels2]

I shoot pretty fast bows.  I don't go above 12 gpp and usually around 10gpp.  Every bow is different, but I find I can get them quiet with some velcro on the last couple of inches of the string grooves and very small adjustments to centershot, brace, and nock point.  Your grip on the bow means a lot as well.
Don't be afraid to try different adjustments.

[McDave]

The technology is there to make quiet, fast bows.  My Bob Lee Shikari is the quietest bow I’ve ever had, as quiet as any of my longbows.  With the super-curved limbs, it's also the fastest bow I’ve ever had.  And this is with lightweight 3D arrows, coming in at about 8 gpp.  I'm sure it would be even quieter with hunting weight arrows.  If this can be accomplished with the Shikari, I’m sure it's just a matter of time until whatever makes it so quiet makes its way into other bow designs.

[BigJim]

No amount of effort or quality of string material will make a bow .. or arrow quiet enough for a deer not to hear it. Now a screaming banging obnoxious set up will be much more alarming than a mild thump.

I personally don't care for the feel of a dacron string and wouldn't consider it an option for me. The speed doesn't play in to my scenario one iota. I have watched deer drop to a shot and the arrow go safely over there back only for them to stand back up and continue to feed. .. Not alarmed enough to run off.
I have also watched a mature non pressured completely calm Saskatchewan buck drop out from under a 340 fps arrow at the very last second.
Things are going to happen.. over thinking them won't eliminate them.
BigJim

[Kirkll]

I think you'll find the fast flight string with 10-12 gpp arrows and rubber cat whiskers would be your best bet.
Low profile fletching is your friend too. Trajectory is quite different at 15 FPS difference. The flatter the better IMO.

An alert animal is best not shot at. But if you gotta do it, shoot low heart shot placement.    Kirk