Hello CAUT folks, cc: Josh Kubasta While we are on this subject I though I'd let you know of an interesting solution for this: A former work study student of mine, Josh Kubasta, now a grad student up in Minnesota, has just installed a Battery Powered Damp Chaser set up for their concert grand. Seems to be working great, and I think a heck of an idea for this. Here is a basic description for how he is powering it. I think his cost may include the Damp Chaser Systems too: --------------------- We are at 24 hours, and the battery hasn't flinched. Still above 12v. This is in humidifier mode, about 10w A/C. De-humidifier mode will pull around 80w A/C. Luckly in Minneasota's climate our de-humidifier season is less than most, but then again our air conditioning is nothing compared to Murray State. The system cost is $250, could be done for less but that is the Batteries Plus route. 1 Deep Cycle 12v battery (around 90 amp hours), battery charger (automatic charger to regulate battery correctly), Inverter D/C to A/C (big enough to handle maxium requirements). Battery cases for the battery and the charger/inverter. The problem is the charger/inverter creates heat, a low speed cooling fan helps move air. One way to cut the heat is to get an inverter larger than the requirement, same with the charger. The greater capacity allows the components to never run at capacity, and then create less heat. We have also installed a way to turn off the cooling fan to eliminate any noise for recordings and performances. Basically that is the system. Let me know if you need more info for the listserver, if you do post it, I would like credit. Josh > > -----Original Message----- > > From: Joshua Kubasta [mailto:josh@kubasta.com] > > Sent: Wednesday, October 01, 2003 6:50 PM > > To: scott.thile@murraystate.edu > > Subject: stage piano > > > > > > I thought you might like to know that my idea of a battery system > > to operate a climate control system on a stage piano works. We have a stage > > grand that has been running on battery power for 9 hours, I am testing how far I > > can get with the battery. My goal was create a weekend's worth of battery > > power. Hopefully, if someone unplugs the system on Friday night, > > the piano will not change humidity by Monday morning. > > > > Josh > > > > > > > > -----Original Message----- From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]On Behalf Of Don Sent: Friday, October 10, 2003 12:48 PM To: College and University Technicians Subject: Re: humidity control in concert pianos Hi Jeff, I'd hide the cord on the back of the tail end leg on the side not facing the audience. The fact that your most used piano is stored in "concert position" means that an electrical outlet could be installed on the stage floor, eliminating the need for a long "cord". I think you are asking "what if" questions. There are always solutions. I personally have never had a grand dampchaser cause a buzz. Perhaps I am lucky? At 02:28 PM 10/10/2003 -0400, you wrote: >How do you hide the unsightly cords during performance, or expect >others who move the pianos to do it correctly? Or protect cords from >damage by those who aren't considering cords when the piano is pulled >out for use? It is unreasonable to expect me to be here 24-7 to move >the pianos. > >Our situation may or may not be unique, but our most used piano is >"stored" in concert position, so having cords draped across the stage >at all times would not be acceptable. Our "piano closets" did not turn >out to be useful for storing pianos for both climactic and logistical >reasons, so both pianos are kept onstage at all times, and the piano >closets have become storage for music stands, choral risers, >chalkboard, lecture podium, etc. > >You can see here how our pianos are stored, except that the piano is >uncovered for the picture: >http://www.music.sc.edu/Facilities/RecitalVR.html >(cut and paste to your browser - this new mail program is supposed to >automatically paste as a link but it's not doing it) > >You can click on the picture and drag it around to see the hall. (This >is cool. I didn't know until just now we had this.) Piano closets are >the double doors on each side of the stage. You can also see our wind >tunnel (HVAC return vent) to the right of the organ where someone >occasionally leaves a piano when their event requires a full stage >without piano. The 2nd piano is to the left of the organ. >Jeff > > >On Friday, October 10, 2003, at 11:25 AM, Don wrote: > >> Hi Jeff, >> >> I've changed the thread. >> >> That's very simple to arrange. Take a rechargeable emergency >> flashlight, >> replace the bulb with a buzzer and splice it into the power cord of >> the DC >> unit. When the unit is unplugged it will buzz for about 20 minutes. >> Trust >> me--they will plug it in! I'd really appreciate the DC people including >> this as an optional "add on". >> >> A refinement to this would be to use one of the many uninteruptible >> power >> supplies that are used on computers--I do think this is overkill--but >> I'd >> do it in a flash if I could purchase a unit where the "beep" could be >> turned off for concerts--there would then be no cords needed during a >> performance. >> >> The local University concert venue's here have DC units on the two >> pianos >> used for that purpose. >> >> >> At 10:55 AM 10/10/2003 -0400, you wrote: >>> If he's like us, there is no way to expect to keep one plugged in on a >>> concert instrument. >>> Jeff >>> >>> On Friday, October 10, 2003, at 08:35 AM, Don wrote: >>> >>>> Hi Eric, >>>> >>>> Why no hope of a DC system with bottom cover? >>>> >>>> At 10:12 AM 10/10/2003 -0400, you wrote: >>>>> to dry out it reverts a devilish false beat capo noise monster. >>>> Unfortunately, most of the concerts are during the dry months and >>>> there is >>>> no hope of any climate control. >>>>> Eric Wolfley >>>> >>>> Regards, >>>> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. >>>> >>>> mailto:pianotuna@accesscomm.ca >>>> http://us.geocities.com/drpt1948/ >>>> >>>> 3004 Grant Rd. >>>> REGINA, SK >>>> S4S 5G7 >>>> 306-352-3620 or 1-888-29t-uner >>>> _______________________________________________ >>>> caut list info: https://www.moypiano.com/resources/#archives >>>> >>> >>> _______________________________________________ >>> caut list info: https://www.moypiano.com/resources/#archives >>> >>> >> >> Regards, >> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. >> >> mailto:pianotuna@accesscomm.ca >> http://us.geocities.com/drpt1948/ >> >> 3004 Grant Rd. >> REGINA, SK >> S4S 5G7 >> 306-352-3620 or 1-888-29t-uner >> _______________________________________________ >> caut list info: https://www.moypiano.com/resources/#archives >> > >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner _______________________________________________ caut list info: https://www.moypiano.com/resources/#archives
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