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200 new lighted thumb pistons for $100

Hauptwerk and sample sets *not* permitted. Audio and MIDI hardware for use with Hauptwerk, organ consoles, parts, computer equipment.

"Live" Acoustics ?

Postby TheOrganDoc » Sun May 01, 2016 1:40 pm

Hi all,
I've been told that the room is one half of the organ (sound). Tend to agree. "ed"


I wholeheartedly agree, if not more-so !
"I have worked on Pipe Organs, living in Dead acoustics,
and the tonal quality is most disappointing ! :roll:

PS, Not to say that I haven't enjoyed Listening to Pipe Organs whilst they were being played,
and I was inside their "Swell-box or Pipe Chambers" ! :wink:

"Only thing missing at those times was an Orchestra leaders Baton !" :P
Mel
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Re: "Live" Acoustics ?

Postby engrssc » Sun May 01, 2016 3:53 pm

TheOrganDoc wrote:Not to say that I haven't enjoyed Listening to Pipe Organs whilst they were being played, and I was inside their "Swell-box or Pipe Chambers" ! :wink:


Then there's this thing about loss of hearing maybe? ("Would you mind repeating that and speak louder") :o

Rgds,
Ed
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Re: 200 new lighted thumb pistons for $100

Postby johnh » Sun May 01, 2016 11:42 pm

It's also an interesting experience to be inside an Austin organ Universal Airchest http://www.austinorgans.com/aoiuniairchest.html (windchest) while the instrument is being played.


---john.
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Re: 200 new lighted thumb pistons for $100

Postby engrssc » Mon May 02, 2016 4:16 am

Thanks, John. But I think I'll pass.

That Austin Universal Airchest is an interesting and well thought out piece of real pipe organ construction. I took lessons many years ago on an Austin and instantly fell in love with pipe organs.

Rgds,
Ed
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Re: "Live" Acoustics ?

Postby TheOrganDoc » Mon May 02, 2016 4:52 pm

What-did-ya-say, is my password these days.
Tuned many high and low Pressure pipes,
including many Tubas, and Trumpets ! :roll:

engrssc wrote:
TheOrganDoc wrote:Not to say that I haven't enjoyed Listening to Pipe Organs whilst they were being played, and I was inside their "Swell-box or Pipe Chambers" ! :wink:


Then there's this thing about loss of hearing maybe? ("Would you mind repeating that and speak louder") :o

Rgds,
Ed
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Re: 200 new lighted thumb pistons for $100

Postby jab8283 » Sat Sep 10, 2016 4:47 pm

I bought 20 of the NOS Rodgers lit pistons. I just send Arndt Organ a price quote to have them engraved. The only thing I don't know about is wiring. There are no instructions to tell me which prongs are for the L.E.D. lights, and which prongs are for the reed switch. Any one know which set of prongs on these lit pistons are which? I bought these specifically for General 1 - 20. I'm not sure if Paramount Organ Works 4.50 sample-set supports them or not, but hopefully they do. If any one could share information about how to wire these I would appreciate it.
Jim Barrow
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Re: 200 new lighted thumb pistons for $100

Postby engrssc » Sat Sep 10, 2016 5:31 pm

The 2 - thin, wire like terminals are the (incandescent - not LED) lamp. The 2 - brass/copper colored larger terminals are the momentary switch contacts. BTW, the (incond) lamp runs on 5 VDC and draws 61.1 ma. An equivalent LED draws approx. 2.28 ma. These pistons were sold by mcn-systems..

Image

I have these same piston buttons and have converted them (a slightly time consuming task but well worth it) to use 3 mm LED's so as to use MIDI-Hardware's LITSW boards directly, http://www.midi-hardware.com/index.php?R2=USD&section=prod_info&product=LITSW Works great and with this (conversion to LED's) I don't need the LITBO power booster accessory. The LITSW boards can drive up to 3 ma each per LED.

I also made my own piston slips. The hole diameter for these pistons is 11/16" and I would suggest using a Forstner bit to drill the holes using a drill press. I found oak lattice boards available at Menard's work great. They come in 1/4" thick X 1 3/8" width well as 1/4" thick by 1 3/4" width. These 8 ft long boards are unfinished and take which ever stain you want to use very well. After the stain dried (in my case left the boards dry for 3 days) then sprayed them with medium gloss lacquer. And, of course let them dry another 3 days. Found if you stain both sides (at the same time) the boards tend not to warp at least not much.

If you use 3 mm high efficiency LED's they require a 1 K resistor in series to limit the current draw. I used 1/8 watt - tiny little guys that I actually was able to solder the resistor to the LED and together, they both fit inside the piston button housing. I solder them together before fitting them inside the piston housing. If anyone is interested in this "technique", you can PM me.

BTW, just to be (slightly) different, I used mostly white LED's for the c/a pistons, and then blue LED's for other functions. Flashing red LED's for the SET and the G/C

I also use ribbon cable to connect the (2 per) piston connections. In the case of the LITSW's, the same common (grnd) is used for the momentary push buttons as well as the common for the LED's. (in others words 2 separate wires for each piston plus the common bus rail), I ran a solid bus for this common and 2 separate connections (one for the switch and one for the LED) for each piston.

Image

I soldered the 1 K resistor between the LED's short lead which is the cathode (-) and the common (grnd).

I also cut 3/4" X 3/4" by 1/2" thick wooden square dowel material to space the piston slips further forward to allow for plenty of rear clearance.

To keep the connecting (ribbon) cable in place, I carefully used round topped Arrow T 25 staples (shot) into the (back side) edge of the oak piston slip boards and ran the wire(s) thru them. Not enough space for conventional cable clamps.

Am considering using larger LED's near/above the toe pistons (controlling the Pedal c/a). Not sure how useful that would be considering most real pipe organ don't even have any lit thumb pistons. All this reminds me of my good neighbor who has so much chrome on his Harley, you can barely see the color of the bike. :o

Rgds,
Ed
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