I haven't done the riblets yet but others say they bring good results. I haven't heard any negatives. Chris ----- Original Message ----- From: "Jeannie Grassi" <jcgrassi at earthlink.net> To: <caut at ptg.org> Sent: Friday, February 26, 2010 3:27 PM Subject: Re: [CAUT] [pianotech] Riblets > Thanks, Chris. > This is helpful in visualizing. I assumed Pianotek supplied good > instructions, but I wanted to get a sense of what was involved. Doesn't > sound too complicated. > > I assume this is to improve the treble area. Would riblets help in the > bass? I have a Yamaha C6 that is weak in the bass and I can't seem to find > any way to improve it significantly. > > Any recommendations that don't involve replacing the soundboard? > jeannie > > -----Original Message----- > From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Chris > Solliday > Sent: Friday, February 26, 2010 12:15 PM > To: caut at ptg.org > Subject: Re: [CAUT] [pianotech] Riblets > > Hi Jeannie, > It is a turnbuckle that connects the rim to the belly rail. Fasten with 6 or > 7 wood bolts, that are provided. I dry fit it by holding the thing in place > and screwing the buckle out a bit so it will stay in place, mark the holes > with a punch and remove the resonator then drill all my holes, use screw > lube, I use beeswax. Tighten wood bolts with a socket wrench. A little > turning of the buckle and you're in.Tighten to just get it snug and then a > little more and listen, go in 1/16th turns and listen, it usually doesn't > take much, and there is a point where going beyond diesn't do any mor > improving. And there is the point that is way beyond. Do not over tighten as > our friend from Ithaca can testify, you can tear out the belly rail if you > try hard enough. Takes about 1/2 hour. Support is more evenly distributed > along the belly rail. Projection, power and clarity are improved. > They come with very detailed installation instructions. > Chris > ----- Original Message ----- > From: "Jeannie Grassi" <jcgrassi at earthlink.net> > To: <caut at ptg.org> > Sent: Friday, February 26, 2010 2:59 PM > Subject: Re: [CAUT] [pianotech] Riblets > > > > Hi Chris, > > Can you please go into a bit more detail about installation of these. > > Thanks, > > jeannie > > > > -----Original Message----- > > From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of > Chris > > Solliday > > Sent: Friday, February 26, 2010 11:49 AM > > To: caut at ptg.org > > Subject: Re: [CAUT] [pianotech] Riblets > > > > The device is the Grijalva Treble Tone Resonator (Pianotek part # RH-4TRL) > > and it would improve your problem, it might even do so amazingly, I just > > wouldn't want to promise that much always, as results vary. > > I have put over ten of these on and have always been satisfied, sometimes > as > > I said the results are truly superior. Soundboard Geritol. > > Chris Solliday, RPT > > ----- Original Message ----- > > From: "Ron Nossaman" <rnossaman at cox.net> > > To: <pianotech at ptg.org>; <caut at ptg.org> > > Sent: Friday, February 26, 2010 12:50 PM > > Subject: Re: [CAUT] [pianotech] Riblets > > > > > > > Andrew Anderson wrote: > > > > The school whose Steinways I service would like to ameliorate the poor > > > > balance between bass and treble in their D. This D was a really weak > > > > treble. Voicing the hammers up makes for a harsh attack but doesn't > > > > seem to address power. > > > > > > > > Could someone who has utilized riblets on a S&S D comment on their > > > > experience. > > > > > > I haven't dried riblets on a D, but I know of a couple of > > > instances where it was tried, and heard one of them first > > > hand. The consensus was that it was somewhat less bad, but not > > > really better. Still, it's worth a try for the price of making > > > a couple. I think the belly rail, unsupported through the top > > > half of the scale by other than the "little stick", offers > > > more potential, however. Pianotek sells a turnbuckle adjusted > > > brace that will likely help more than riblets. > > > > > > Or if you'd like a more extensive modification... > > > Ron N > > >
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