kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #20 on: October 13, 2019, 05:04:55 AM »
Thanks guys. This info has been invaluable, though I unfortunately only saw this when I was half done reverse engineering it!!

I have 4 of these on my bench at the moment if you need any pics or info.

Ken


leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #21 on: October 13, 2019, 06:11:38 AM »
Here some more dope for you boys, these are scans of printout so pardon the resolution

f**k marlbro's and weed ill stick to smoking germanium and silicon

leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #22 on: October 13, 2019, 06:12:11 AM »
and
f**k marlbro's and weed ill stick to smoking germanium and silicon

leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #23 on: October 13, 2019, 06:12:53 AM »
etc
f**k marlbro's and weed ill stick to smoking germanium and silicon

leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #24 on: October 13, 2019, 06:13:31 AM »
etc
f**k marlbro's and weed ill stick to smoking germanium and silicon

leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #25 on: October 13, 2019, 06:18:42 AM »
some transformer dope from Mr sowter

f**k marlbro's and weed ill stick to smoking germanium and silicon

Re: Sound Techniques A Range Line Amp
« Reply #26 on: October 13, 2019, 09:34:13 AM »
I have 4 of these on my bench at the moment if you need any pics or info.
Hey Ken,
any info you find and can share would be great.  It's been over a decade since I peeked inside S.T. modules.  Confirmation of a few values in the passive EQ section would be good.   I remember it being a fairly low z section a-la Pultec EQP but maybe my memory is off and it's closer to Helios.
Anyway, anything really, it's all good 👍

Re: Sound Techniques A Range Line Amp
« Reply #27 on: October 13, 2019, 09:36:38 AM »
etc

Thanks for posting the info Leadbreath
Is this stuff that was originally on Geoff's SoundTechniques site?

kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #28 on: October 13, 2019, 10:20:44 AM »
Will do, just let me know what you need regarding the values. Anybody have edge connector pinouts for the large McMurdo connectors? I can get signal into and out of the first amp card, but the signal level after the transformer is extremely low. I imagine it needs to be jumpered to the eq, as it’s not getting there at the moment. Would be great if anyone could provide info! I’m getting great signal level at pins 32/17 of the first connector, but I believe that would be an insert send, and needs to be jumpered? Someone modded this with a relay as well. Hard to tell what’s going on!

leadbreath

Re: Sound Techniques A Range Line Amp
« Reply #29 on: October 13, 2019, 10:24:02 AM »
Not really sure, found them in a tech folder and scanned them. From the urls on the page it does look like its the original website?
f**k marlbro's and weed ill stick to smoking germanium and silicon


Re: Sound Techniques A Range Line Amp
« Reply #30 on: October 13, 2019, 12:30:53 PM »
...an insert send, and needs to be jumpered? Someone modded this with a relay as well. Hard to tell what’s going on!

The modules I saw also had a relay but I don't remember the function.  First guess would be for switching over to tape input for mixdown but you'll have to peek around and find that out I guess.
I'm shooting in the dark a bit but I seem to remember that the channel fader (Painton quadrant type) was intended to go after the first stage amp and transformer, before the EQ and makeup gain/output transformer, so that would be where you'd jumper or put a channel level pot - 1K log would work.  The first output transformer might need a terminating resistor of 620 to 1K ohm if you don't put a level control and just jumper it through.

Do you know the history of the modules?  Are they like the picture attached here?

Re: Sound Techniques A Range Line Amp
« Reply #31 on: October 13, 2019, 12:33:58 PM »
From the urls on the page it does look like its the original website?

Doh!!   I'm an idiot  :o 
Thanks  :)

kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #32 on: October 13, 2019, 11:02:37 PM »
Thanks so much for the info. Your recollections seem to match up with what I was thinking. I can't remember where these modules came from, but I'll ask. They are identical to what you posted. I'll post some photos from my phone.

kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #33 on: October 13, 2019, 11:17:10 PM »
Front
« Last Edit: October 13, 2019, 11:22:03 PM by kpearsall »

kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #34 on: October 13, 2019, 11:17:50 PM »
Side

Re: Sound Techniques A Range Line Amp
« Reply #35 on: October 14, 2019, 05:37:03 PM »
Hey Ken,
I can get you in touch with the person who now owns the Sound Techniques brand and built the new modules and desk.  He has all the info you'll need for the connector wiring etc.  Send me a PM with your email address

kpearsall

Re: Sound Techniques A Range Line Amp
« Reply #36 on: October 14, 2019, 07:55:40 PM »
sent!

Re: Sound Techniques A Range Line Amp
« Reply #37 on: October 14, 2019, 08:20:21 PM »
sent!

Seen and emailed.  Lemme know how it works out.
Any more pics and schematic details would be great if you can swing it 👍

P.S.  thanks for the pics you already posted
« Last Edit: October 14, 2019, 08:24:59 PM by Winston O'Boogie »

kpearsall

Re: Sound Techniques Thread (A Range Amp etc)
« Reply #38 on: October 14, 2019, 11:57:41 PM »
links not working?

L´Andratté

Re: Sound Techniques Thread (A Range Amp etc)
« Reply #39 on: October 15, 2019, 06:16:26 AM »
Works for me? *drool*
Doesn´t work for me too, that was something else I downloaded before ::)
Thanks!
« Last Edit: October 15, 2019, 06:49:09 AM by L´Andratté »
"Why not get an assistant to work the faders? Real vintage! And maybe cheaper... ;)"


 

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