Allen TC-1

[DrewCatrow]

My church just became the owner of an Allen TC-1 but there was no manual or technical manual with it. We have a very limited budget and are hopeful to find some help here.

[myorgan]

DrewCatrow,

Welcome to the Forum. The service manual for your organ can be found here: https://www.ebay.com/itm/Allen-Servi...s/313127680977. Hope that helps.

Are there some issues, with which you need assistance?

Michael

[DrewCatrow]

I'm confused about the amps. There is a 2 channel in with one out inside the console (with coax type fittings). There is also another in the gyro cabinet (1 coax type input and 1 RCA input with 2 gain controls and 1 output). There are 2 coax cables in the console for that amp but no input lines for the amp in the gyro. When I connect the amp inside the console and the speaker outs to the gyro I get sound but not much. The bass/diapason speaker has almost no volume at all.

Im confused.

[DrewCatrow]

You could email me I have pictures.

[myorgan]

You can post them here, Drew. Either drag-and-drop them to your post, or choose to Upload Attachments. There are a limit of 5 pictures per post.

Michael

P.S. If they won't post, try resizing them. That's been a recent issue here, but resizing almost always works.

[DrewCatrow]

[DrewCatrow]

[DrewCatrow]

[DrewCatrow]

[DrewCatrow]

As you can see, someone cut some of the lines and I've got most figured out, but I'm confused.

[myorgan]

Drew,

Feel free to post all your photos in one post along with the text you wish to post. Unfortunately, I think the pictures will be lost if I merge the posts. Perhaps Admin can and will be able to merge the multiple posts. In my attempt to respond to one of your photos, I was taken out of the thread and lost the initial post. That's one of the results.

In one of your photos (with the Crescendo roller in the background), it looks like the wires are below where they connect. The spade connectors go to the outputs of the amplifier, and the coax goes to the input connectors.

In the picture of the rotary speaker I'm unsure because it's difficult to see any of the connections. The picture with the 4 silver speakers appears to have a double terminal strip where the amplifier would send the output to the speakers, however, it looks like the connections to the speakers are supposed to be connected in series or parallel. Member, Samibe (Lamar) from Atlanta will be able to help you here, as he's connected several for his TC organs.

In the photo with the T-50 amplifier that has two stenciled words labeled EXPRESSION, the spade connectors will connect to the outputs, but it looks like there are 2 inputs for 1 connector. It probably doesn't matter which one because the other coax cable likely goes to another amplifier. The cord is blocking the coax input, so it's hard to see where it goes in. It is entirely possible the two knobs labeled "expression" are inputs, as those are generally where the RCA inputs are.

I hope this helps somewhat. For my sake, wait until someone with more knowledge of those organs weighs in, so you don't blow up your organ.:embarrassed:

Michael

Note that someone has color coded the black and red wires on the output on at least one of your T-50 amplifiers.

[Silken Path]

Hi, Drew - the two cables sitting near the "Expression" terminals - where do they go to? To the pedal?

And the black and wires may be speaker wires. Do they go into the bundle?

Seems to me that the first question is "Will she oscillate?" and I suspect that you can eventually find out right there at that amp. The manual states that a T-50 amp will not blow up if operated unloaded. I wouldn't deliberately test that, but the amp(s) should not have been damaged if someone previously tried to power up the organ without the speakers attached.

The gyro looks nice. Do you have a matching cable or cable end that fits that connector on the left side of the gyro (viewed from the rear)? Figuring out where THOSE wires go was a booger-bear on my TC-4. I see someone has labeled the connector strip. That's called the "gyro and power strip" on my TC-4. What's it say there?

[DrewCatrow]

Let me copy and past so I get things correct.

Hi, Drew - the two cables sitting near the "Expression" terminals - where do they go to? To the pedal?

A. They are the only two connectors of that type, I
assumed they are the only two outputs.

And the black and wires may be speaker wires. Do they go into the bundle?

A. Yes they are in the bundle. I assumed they were
speaker wires

Seems to me that the first question is "Will she oscillate?" and I suspect that you can eventually find out right there at that amp. The manual states that a T-50 amp will not blow up if operated unloaded. I wouldn't deliberately test that, but the amp(s) should not have been damaged if someone previously tried to power up the organ without the speakers attached.

The gyro looks nice. Do you have a matching cable or cable end that fits that connector on the left side of the gyro (viewed from the rear)? Figuring out where THOSE wires go was a booger-bear on my TC-4. I see someone has labeled the connector strip. That's called the "gyro and power strip" on my TC-4. What's it say there?

A. The gyro does turn but will not spin up for tremolo.
I will snap a better photo and post tomorrow.

[myorgan]

Drew,

If you click on "Quote" under the post you wish to quote, it will bring it into your post as I have changed yours above.

Thanks.

Michael, Moderator

[Admin]

Here's how to quote on the Forum.

https://organforum.com/forums/forum/...tes#post648888

[Silken Path]

Let me copy and past so I get things correct.

A. They are the only two connectors of that type, I assumed they are the only two outputs.

There should be one more for the gyro. The TC organs, or at least my 1959 and 1967, use coaxial cable from the organ to the amps. On mine, the wires go from the pedal to the organ floor and make the main connections.

Those on your organ are inputs. They should go to the expression pedal. I'm guessing you just need to (very carefully) thread them onto the amp. Those connectors are obsolete and are very hard to find in stock. Don't cross-thread them. (!)

Then find any sort of speaker and make a temporary connection to the terminals on the amp. Then you can turn the organ on, with the pedal all the way off, and then give it just a little push, select a stop, and press a key. If you're lucky, you'll hear a sound... Stop then, because you'll have proven that it's oscillating.

Anyway, since the other amp is in the gyro, there should be a coax for it. (Check that it has the same type of connector on the amp.)

Yes they are in the bundle. I assumed they were speaker wires

A. The gyro does turn but will not spin up for tremolo. I will snap a better photo and post tomorrow.

That's a good sign. :) I'm hopeful that the labeled terminals under the cover are the gyro connectors. The gyro won't change speeds unless it has power and control.

But, but, but... I can get over enthused with fandom and have been reminded in the past that these organs were basically custom made for the customer and may vary greatly in hardware, options, and configuration. Don't be disappointed if something I describe from mine isn't the same on yours.

[DrewCatrow]

There should be one more for the gyro. The TC organs, or at least my 1959 and 1967, use coaxial cable from the organ to the amps. On mine, the wires go from the pedal to the organ floor and make the main connections.

A. Sadly, I can only find 2 inputs like those on the amp in the console, at least what I can see. I have connected those two to the internal
Amp, connected speakers, and there is sound. I don't think there's enough and I think it should only go to the diapason / bass
cabinet.


Question: Would you like to see inside the covered box in the middle? This is where the 2 coax type input lines come out to the
Interior console amp. I'm wondering if there should be another coax type line to the gyro cabinet.


Those on your organ are inputs. They should go to the expression pedal. I'm guessing you just need to (very carefully) thread them onto the amp. Those connectors are obsolete and are very hard to find in stock. Don't cross-thread them. (!)

Then find any sort of speaker and make a temporary connection to the terminals on the amp. Then you can turn the organ on, with the pedal all the way off, and then give it just a little push, select a stop, and press a key. If you're lucky, you'll hear a sound... Stop then, because you'll have proven that it's oscillating.

Anyway, since the other amp is in the gyro, there should be a coax for it. (Check that it has the same type of connector on the amp.)

A. There are two type connectors on the amp inside the gyro, but there is not another line for it. In thee second attached photo is a
covered box inside the console that the two coax type lines are found for the console amp. Should there be another coax line going
to that other amp? Would you like to see a picture of the inside??



That's a good sign. :) I'm hopeful that the labeled terminals under the cover are the gyro connectors. The gyro won't change speeds unless it has power and control.

A. There is a four pin connector that attaches to the gyro but is has no affect when it's connected. I did see an adjustment for the gyro
On top of the power supply. I was wondering if this could be the reason it's not speeding up.

But, but, but... I can get over enthused with fandom and have been reminded in the past that these organs were basically custom made for the customer and may vary greatly in hardware, options, and configuration. Don't be disappointed if something I describe from mine isn't the same on yours.

There should be one more for the gyro. The TC organs, or at least my 1959 and 1967, use coaxial cable from the organ to the amps. On mine, the wires go from the pedal to the organ floor and make the main connections.

[Silken Path]

Here's a snapshot of the back of my gyro.



The left side has the AC input and the other side is the control circuit. This requires four wires, and I suspect the labeled section covered on the right is where it's connected. The gyro controller provides a "soft" or progressive startup of the gyro.

Did it come with any other speakers?