Schober Organ Notes No. 101

February/March 2007

Disclaimer: We accept no responsibility for any unfavorable consequences resulting from following our advice


I hope you all had a great holiday season and that we will all have a great new year.


Richard Andersen writes: Dear Alex-- I don't know if you remember me, but I acquired the schematics for the Theatre Organ, and a cassette of the Jim Ramsey record, from you several years back (1997 or 8?)... for which I am still most grateful even at this late date in 2007! I still have the organ I bought from George Andersen (NJ), and she still sings even though she needs a little bit of cleaning and maintenance now and then (which I must admit, I have been lax about!).

I'm writing to let you and the Orphans know that I have put up a skeleton page (which I will flesh out over the next few weeks) with some pictures of my organ and a couple of WAV files of her singing. Hopefully I will also start detailing some of the technical info from the info you had sent me, and put that up on the page. My purpose, in the midst of all the MIDI-fying and Digitizing that everybody else is doing, even to the point of gutting their old Schobers to an empty shell and then refilling them with computer gear that perfectly imitates the Real Thing but just doesn't sound like a Schober anymore, is to make a sort of "Schober Retro-Technology Page" which asserts that the original analog circuitry still has its place, and can still sound good if we let it speak to us on its own terms. Not everyone will agree with me on this point, but some will still be interested in how things were done in Richard Dorf's day.

Maybe my page will inspire some other Orphans (with better sound recording equipment and better playing skills!) to record some sound files of THEIR organs and share them with the rest of us.

The URL is:

I hope you enjoy my meager effort. --Rick Andersen, New Bloomfield, PA


The Schober Organ Tester was designed when Schober was producing tube organs. It was designed to be inexpensive, yet it had several very useful features. One of them was to adjust the tube tone generators. Another was to check for the presence of high voltage (above 70 volts). These functions, I imagine, are now rarely used, as most Schobers that are still in use are solid state. Another function was continuity checking. This was mostly for checking wiring, badly soldered connections or hairline breaks in the printed circuit copper lines.

The most useful feature was signal tracing. You plug the input to your amplifier into the tester, hook a lead to ground and touch points starting at the tone generators through the keyboards and the other circuitry until you find a point where the signal is not present.

Not all members purchased this tester but I find that lately several members needed the signal tracing feature. So I have built several signal tracers using only that part of the Schober Organ Tester circuitry necessary for this singular function. It uses a minimum of parts. Just a capacitor, a potentiometer, a jack and two wires, one with a probe attached, the other with an alligator clip. I build these into either an Altoid mint tin or a little electronics project box. I do dress them up with a nice knob on the potentiometer and a scale for "volume", but that is not necessary. Figure 1 shows the schematic. I have sent these testers to members and they have been able to locate their problems.

EMAIL MEMBERS: If you want the diagram which is published in the hard copy edition, please send me a SASE and an extra 39 Cent stamp. To my WINTER address, below. ak



Any deals, making of payments, receipt of payments or verifications are strictly your responsibility.

Free to a Good Home!

Schober Consolette II Organ. Located in Yuba City, CA (50 miles north of Sacramento). Call or email for more details. Contact: Ann W. Telephone: (530) 674-7364

SCHOBER Theatre Organ FREE

Terms are $50.00 plus shipping costs, or FREE to a good home. [If picked up] Extras include Heath-Thomas "BandBox" and "Playmate", with the construction manuals, and lots of Schober material, including, I believe, the instructions for assembling this unit. Contact: Bill Seabury West Burlington, NY Telephone: (607) 965-8007

SCHOBER Theatre Organ FREE

Theatre Schober, electronics can use some work to make it really right but works now. I added Devtronix reverb. Nice cabinet. Is on 2" floor, needs 2 men to move. Contact: Steve Dudley Salisbury, MA Telephone: 978-465-5980

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Publisher: Alexander Kruedener Email:
Winter: 161 East 89 Street, Apt. 4E New York, NY 10128 (212) 831-0662
Summer: 73 N. Lamphear Road Jamaica, Vermont 05353 (802) 874-4894

Fred Henn Founder & Headmaster Emeritus
February/March 2007
EDITOR Alex Kruedener kruedener@juno. com
EMAIL Jack D. Gildar JDgildar@juno. com
Schober Organ Orphans' Web Page: