Anyone recognize this module?

[kags]

Can anyone identify this 2-channel input module I found lurking in back of our repair shelf? It has four edge connectors on the rear panel - two for each channel, but I don't have mating connectors or power supply to match. I can take internal pictures if it helps.

thanks!
Adam

 

[ruffrecords]

My guess would be it was made by Tweed.

Cheers

Ian

 

[kags]

My guess would be it was made by Tweed.

Cheers

Ian

Thanks Ian -

I've never seen Tweed gear before, but I looked some Tweed consoles up and you might be right. The circuit boards in this piece resemble Neve boards, too. Were Neve and Tweed related?

 

[kags]

I just found this Preservation Sound info about Tweed
https://www.preservationsound.com/2013/06/tweed-consoles-of-the-seventies/

 

[ruffrecords]

Thanks Ian -

I've never seen Tweed gear before, but I looked some Tweed consoles up and you might be right. The circuit boards in this piece resemble Neve boards, too. Were Neve and Tweed related?

Yes, Tweed and Neve were kind of related. When I was there in the mid 70s the main factory was in Melbourne in Hertfordshire. The module factory was a couple of hundred miles or so north in a place called Kelso. Sometime late in the 70s (edit: I think it was actually as early as 1973) the production manager at the Kelso factory left Neve and set up his own console manufacturing company which he called Tweed. The giveaway for Tweed consoles is they continued to use the Neve style largish dots to represent switch positions.

Cheers

Ian

 

[Rob Flinn]

I have been working on 3 different Tweed pieces recently, & this doesn't look like any of the ones I have had in the workshop.

Can you post some pics of the internals, what op amps is it using ?

 

[ruffrecords]

I have been working on 3 different Tweed pieces recently, & this doesn't look like any of the ones I have had in the workshop.

Can you post some pics of the internals, what op amps is it using ?

Hi Rob, do you happen to have any Tweed schematics?

Cheers

Ian

 

[kags]

I have been working on 3 different Tweed pieces recently, & this doesn't look like any of the ones I have had in the workshop.

Can you post some pics of the internals, what op amps is it using ?

I will post some gut shots, but not until Friday when I'm back in the shop. It looks very "Neve-y" inside, except for the cylindrical transformers.

 

[kags]

I have been working on 3 different Tweed pieces recently, & this doesn't look like any of the ones I have had in the workshop.

Can you post some pics of the internals, what op amps is it using ?

Here are some more images

 

[Rob Flinn]

Here are some more images

They don't look anything like any of the Tweed modules I have been working on.

 

[kags]

The AWA transformers may be Australian but the AWA brand was affiliated with RCA I. The US in the 60s and 70s. Maybe these are from a broadcast console. Looks beefy!

 

[pucho812]

Nice mcmurdo connectors

 

[ruffrecords]

Definitely not like any Tweed modules I have seen. They are usually much neater. Ir's a puzzle.

Cheers

IAn

 

[MarkHorn]

That is a Dual Input module from an AWA console, often regarded as the Australian Neve.

 

[mylesgm]

That is a Dual Input module from an AWA console, often regarded as the Australian Neve.

Yep. There’s a complete console here in Melbourne, Coloursound Studios. And quite a few racked up dual modules. They are brilliant, and AWA made a bunch of gear both original designs and a few things made under licence from or for RCA.

 

[kags]

That is a Dual Input module from an AWA console, often regarded as the Australian Neve.

Thanks for the info and docs! I’m gonna suss out the pin out and try to find some mating connectors so that I can fire these up. Nobody at our facility remembers how we came to own these.

 

[MarkHorn]

Here is the rest of it.

 

[ruffrecords]

Not a bad design. Typical dc coupled pair with PNP input for low noise, added emitter follower on the output plus bootstrapped second stage. I do like the "capacitance multiplier" smoothing circuit on the power rail. An improvement of the 1000uF or so Neve fitted across the supply..

Cheers

Ian

 

[MarkHorn]

I joined up the schematic pages so it reads easier.