Miditzer Forum http://www.jbwebserver.net/mforum This is an XML content feed of; Miditzer Forum : Last 10 Posts Copyright (c) 2006 Web Wiz Forums - All Rights Reserved. Fri, 09 May 2008 14:24:16 +0000 Fri, 09 May 2008 06:46:32 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 8.03 30 www.jbwebserver.net/mforum/RSS_topic_feed.asp Miditzer Forum http://www.jbwebserver.net/mforum/http://virtualorgan.com/FileLib/MiditzerForum.gif http://www.jbwebserver.net/mforum Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10858#10858 Author: Jim Henry
Subject: An inherited labour of love
Posted: 09 May 2008 at 6:46am

If you use a car battery, I wouldn't put it inside the console as I believe car batteries still generate corrosive fumes and explosive hydrogen gas. If you want to put batteries inside the console you should use gel cells which are made for that type of use. The Foort Moller uses 6 of the Cyclon BC cells shown here wired in series. That is probably overkill. This is probably adequate and seems reasonably priced too.


Edited by Jim Henry - Today at 6:53am]]> Fri, 09 May 2008 06:46:32 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10858#10858 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10857#10857 Author: toplayer2
Subject: An inherited labour of love
Posted: 09 May 2008 at 6:05am

Originally posted by balderson04

Thanks, Greenfox and Jim.

I've been looking at the Artisan Micro-Midi system, but I'm not sure I've got it sussed out yet.

The Midibox system seemed very understandable from the website and straightforward to implement.  The Artisan system I'm having trouble getting my head around.

Perhaps that reflects the relative capabilities of the two.

Regarding amperage for moving stops, I see that Artisan is offering power supplies up to 99 amps!  That's a significant amount of power.  In fact, that's a scary amount of power!  Requiring, I would think, a three-phase hook-up.

Is there anywhere on the web where specs and/or schematics for genuine Wurlitzer organs is available?  I need to find out what the actual specs for the SAMs I have are.
 
David,
 
I will add may endorsement for the Artisan relay.  I installed one in my former 260 style console with 225 SAMs.   It worked very well and was reasonably easy to wire and program.  One of the primary considerations was Artisan's use of common off-the-shelf components which helps to assure long term maintainability.  Artisan's pricing is also very reasonable.
 
While toggling a bunch of SAMs can be a huge current draw, it is only for a fraction of a second.  What is needed is a (typically 12 VDC) supply that can deliver very high instantaneous current.   I started out with a bank of huge capacitors, but ended up with a simple car battery and trickle charger.  Cheap and effective.
 
When you are ready to start making music, you may want to consider LinuxSampler or GigaStudio Orchestra and the UGSF (free) or HVO ($100 donation to DTOS) sample libraries.
 
Joe
]]> Fri, 09 May 2008 06:05:18 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10857#10857 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10852#10852 Author: johnh
Subject: An inherited labour of love
Posted: 08 May 2008 at 7:28am

Originally posted by balderson04

I see that Artisan is offering power supplies up to 99 amps! That's a significant amount of power.


The last organ I worked on uses a 75amp Astron DC power supply. When first turning things on we wired a smallish fuse into the circuit to guard against any catastrophic wiring errors. Worst case on this organ is when all the stops are drawn and the organist hit's 'cancel'. Not only are there a bunch of powered drawknobs but the pipes are on slider chests and the slider motors are real power hogs!

]]> Thu, 08 May 2008 07:28:09 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10852#10852 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10850#10850 Author: Jim Henry
Subject: An inherited labour of love
Posted: 08 May 2008 at 6:39am

You also have to consider the voltage needed by your SAMs. 12 volts is most likely but it could be 24 volts or maybe something else. You can get 99 amps at 12 volts from a typical household circuit. 99 amps is a scary amount of current, like vaporize metal tools scary. You need to be thoughtful about providing protective devices so that a short circuit doesn't become a fire hazard.

I have never seen complete specs or schematics for a genuine Wurlitzer TPO anywhere. However, they wouldn't do you any good anyway. Wurlitzers didn't use SAMs.

Can you identify the maker of your SAMs? Syndyne or Peterson are the most likely choices.
]]> Thu, 08 May 2008 06:39:48 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10850#10850 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10849#10849 Author: balderson04
Subject: An inherited labour of love
Posted: 08 May 2008 at 6:04am

Thanks, Greenfox and Jim.

I've been looking at the Artisan Micro-Midi system, but I'm not sure I've got it sussed out yet.

The Midibox system seemed very understandable from the website and straightforward to implement.  The Artisan system I'm having trouble getting my head around.

Perhaps that reflects the relative capabilities of the two.

Regarding amperage for moving stops, I see that Artisan is offering power supplies up to 99 amps!  That's a significant amount of power.  In fact, that's a scary amount of power!  Requiring, I would think, a three-phase hook-up.

Is there anywhere on the web where specs and/or schematics for genuine Wurlitzer organs is available?  I need to find out what the actual specs for the SAMs I have are.

Thanks.

David


]]> Thu, 08 May 2008 06:04:52 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10849#10849 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10847#10847 Author: Jim Henry
Subject: An inherited labour of love
Posted: 06 May 2008 at 6:24pm

You will need some on-board electronics to run your combination action. So Artisan is probably a good choice. Theoretically it is possible to have the Miditzer plus Midibox do it but I don't even want to think about what it would take to put that theory into practice.

Give some careful though to your power supply. The amount of current required to move the SAMs on a full combination change is staggering. Batteries or capacitors plus a charger is a typical solution.
]]> Tue, 06 May 2008 18:24:46 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10847#10847 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10846#10846 Author: greenfox
Subject: An inherited labour of love
Posted: 06 May 2008 at 5:35pm

 
http://www.artisanorgans.com/
 
This link might help.
 
It is the Micro-Midi Control System.


Edited by greenfox - 06 May 2008 at 5:37pm]]> Tue, 06 May 2008 17:35:57 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10846#10846 Show us your Miditzer : An inherited labour of love http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10845#10845 Author: balderson04
Subject: An inherited labour of love
Posted: 06 May 2008 at 5:29pm

Hi, Greenfox:

Yes, I believe the stops are what you're describing as SAM's.  They certainly are double action, with the front side intended to be driven by 12/24 volts.  I haven't investigated the combination piston circuitry yet, so I'm not sure how (or even whether) it drives the stops.

I'll look into Artisan, which I haven't heard of until now.  The less programming, the better!

David

]]> Tue, 06 May 2008 17:29:18 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1444&PID=10845#10845 The Green Room : My Blog http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1449&PID=10843#10843 Author: fmuller
Subject: My Blog
Posted: 06 May 2008 at 4:13pm

If anyone is interested, I just set up my own blog to chronicle my Theatre Organ experiences.

http://myTOsaga.blogspot.com
]]> Tue, 06 May 2008 16:13:30 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1449&PID=10843#10843 Theatre Organ Event Announcements : Houston Theatre Organ Society http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1446&PID=10842#10842 Author: greenfox
Subject: Houston Theatre Organ Society
Posted: 06 May 2008 at 4:03pm

We are looking forward to Ken Double visiting us "Down-Under" in August.

]]> Tue, 06 May 2008 16:03:27 +0000 http://www.jbwebserver.net/mforum/forum_posts.asp?TID=1446&PID=10842#10842