Trident A Range 2038 Module Pinouts

[Siegfried Meier]

Hey guys,

I've been working on this for awhile, and only now discovered that it's a 2038 module.  All the schematics and pinouts I have are for a 1038, and I'm told that the pinouts are VERY different - glad I didn't wire it up now ... :-S

I have a bad scan of a 2038 but I cannot read a single thing on the pinouts.  Does anyone at all have any info to give regarding this?  Perhaps you've wired up a 2038 and can check for me?

Forever in debt, thanks so much.
Sig

 

[Bo Hansen]

Siegfreid,

Regarding the four-digit numbers that you refer to, I think you mean drawing numbers that start with the letters ED.

I will check if I have it and come back to you.

--Bo

 

[mjrippe]

Hi Bo,

It is not the drawing number in question, it is the number on the PCB.  The A Range came with two different input module PCBs, one is the 1038, the other is 2038.  If you look in the schematics section (Technical Documents) of this site, both versions are at the top of the Trident thread.  Unfortunately the 2038 has unreadable pintous.

Mike

 

[peterc]

Someone in this thread might be able to help

http://www.gearslutz.com/board/high-end/80842-trident-range-20.html

Peter

 

[Bo Hansen]

Siegfried,

I managed to find a pretty clear picture in my archive of Triad A-Range channel module pin-out.

It should be version 2038, the drawing is dated April 1979.

--Bo

 

[Siegfried Meier]

This looks terrific man!!  The pinouts are totally different from the ones I currently have, so can you 100% for sure say this is a 2038?  Were there ever any other modules made besides the 1038 and 2038?

I am soooooo glad I didn't use my existing pinouts to feed voltage into this thing...it would be gonzo if I had...

Thanks so much!
Sig

 

[audiomixer]

Now that you have a starting point you could check the basic voltages with a multimeter.....

at least you would not kill the modules by hooking up the PS to the wrong pins. and 100 Ohm serial 1/4w resistors in the supply lines help a lot too for the first boot.

- cheers,

michael

 

[mjrippe]

Nice one Bo!  Thanks for that.

Sigfried - the +50v is in the same place on both modules so that's safe.

 

[Bo Hansen]

Sigfried,

In my paper it says channel amplifier type 2038, but there might be some little special connection in the connector as this console were built specifically for Burbank Studio in the USA, April 1979.

So I can not promise 100% sure that it matches your 2038 version. (which also may be specially customized)

--Bo

 

[Siegfried Meier]

50v yes,  but the 24v is not the same on both...

I'll have to do some wire tracing.

Thanks guys!!
Sig

 

[kpearsall]

As far as I'm aware, there was only one 1038 built. That was the one specifically built for Trident Studios. All production models were the 2038. Just look for the overload light the 1038 did not have that.

 

[Bo Hansen]

kpearsall,

There stood two Triad A-Range consoles at Trident Studios, I think one for mixdown and one for recording/tracking.

--Bo

 

[Bo Hansen]

Recording/tracking console ?

 

[kpearsall]

From my understand, and I very well may be wrong, Only one of those was a 1038. They were all unique (I especially love the console mounted Allison Research Gain Brains!). I think that was covered on the gearslutz forum where those pictures first showed up. To add even more confusion, there was also the sound techniques desk there called the "A-Range" and I've seen people also claim that this was the prototype.

 

[QUEEF BAG]

another obvious way to tell the 1038 from the 2038 -

1038 has the TO-66 transistors mounted on the circuit board

2038 has them on the back of the module frame (good heat sink).

 

[Bo Hansen]

Btw, I got these pictures from Malcolm Toft when he showed me Trident Studios in 1981.

--Bo

 

[Siegfried Meier]

Thanks for all the info guys.

I'm using a JLM trafo to balance this module.  I'm unsure of the wiring, but they're 1:1 trafos so I guess both sides would be the same.  It reads 1, 2 and 3 - am I wrong to assume this refers to pins 1, 2 and 3 of the XLR jack and module output?

Thanks!
Sig

 

[Siegfried Meier]

This looks to be it...?

http://www.jlmaudio.com/JLM111DC_Output_Transformer.htm

 

[Siegfried Meier]

This looks to be it...?

http://www.jlmaudio.com/JLM111DC_Output_Transformer.htm

This trafo is probably just older, as mine doesn't really look like that anymore.

 

[Siegfried Meier]

She is done!!

You guys all friggin' rock, thank you so much for your help.  And a special thanks to Bo for the pinouts.