gar381

Hi Guys

I finally decided what to do with my Sphere Pieces/parts !

http://www.groupdiy.com/index.php?topic=44281.0





I have decided to attempt to build a 10 channel Side Car
using my parts along with some  goodies from ClassicAPI.
(What would we do without Jeff ?? :) )

The plan at this point is to build 10-M1200 pres to fill my 22224 backplane.



and use Jeff's Double Bay Bundle for EQs and Comps.

For bus assignments I got a box of these guys



They are latching with Lit LED centers.  I will use these
to control the bus assignment relays.

I got a box of old used AL39s with Buffer boards for metering.




At this point I realized I needed a lot more SPA-62 DOAs


So I built some nice working proto clones.
Its nice that all the transistors are still being made
and are very available.




These are ver2. The Production DOA Pcbs will Ver3.  I need to re-space
a few parts, increase the size of the fingers and Gold plate them.

I will soon add all my reversed Schematics to a new Sphere Thread
in our new Group DIY "Technical Documents (Beta)"

Lots to do Lots to do.. Now to find Time ::)

As the build progresses over the next year or so I'll update this thread.

GARY

« Last Edit: October 31, 2014, 02:59:29 AM by gar381 »
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html


plumsolly

Re: Sphere/Api 10 channel Sidecar build
« Reply #1 on: September 11, 2011, 04:52:59 AM »
What an exciting project!! A Sphere Eclipse A stuffed with 900 series eqs is my dream console. When is someone going to do a DIY version of the 900 eq??!! I think the the schematics for the SPA-62 is/was in the gmail account. If you haven't got it, I can email it to you - send me a pm. Keep us updated.

Best,

Ben

nielsk

Re: Sphere/Api 10 channel Sidecar build
« Reply #2 on: September 11, 2011, 08:48:47 AM »
Excellent project! What is the source of the routing switch bank modules?

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #3 on: September 11, 2011, 03:43:48 PM »
Thanks Guys..

Ben.. There are at least 3 SPA-62 versions that I have come accross
including the gmail account one.  I own 2 of them (see the picture above of
the real ones} and the gmail one is the third.
I designed my PCB to be able to stuff any of them except for the 313 lamps.
I will include all 3 when I do my Sphere doc dump
in our new Group DIY "Technical Documents (Beta)"
Thanks to peterc I got a good schmo of the 900 EQ.. Lots of
Kustom inductors.  A remake would be a BIG EXPENSIVE Clone Job :'( :'(

Neils.. These switch assemblys are from a old late Auditronics 900
parts desk as are the AL39s.  (This parts desk has NO frame or PSU
and No inductor based EQs) :'(

GARY

« Last Edit: September 11, 2011, 03:47:02 PM by gar381 »
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

buildafriend

Re: Sphere/Api 10 channel Sidecar build
« Reply #4 on: September 11, 2011, 08:35:00 PM »
This is very inspirational. I will be following this and learning from it.

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #5 on: September 19, 2011, 02:49:37 AM »
The Latest update :)




Here is a 22224 Mic pre backplane with 2 Real M1200B Mic Pre cards.
 I only own 2 real cards so I have been working on this M1200B pcb.



I will DIY 10 more.

Well back at it.. :)

GARY
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

rafafredd

Re: Sphere/Api 10 channel Sidecar build
« Reply #6 on: September 19, 2011, 09:04:00 PM »
Nice. It's good to see such an effort.

Never heard of those SPA-62 opamps. Are there schematics floating around? I have been away for years...

jsteiger

Re: Sphere/Api 10 channel Sidecar build
« Reply #7 on: September 20, 2011, 09:36:02 AM »
Awesome Gary. Love the new preamp board. Kinda cool how they had the opamp just plopped right down on the main board like that.
Visit the CAPI store at http://www.capi-gear.com

CAPI is not affiliated with, endorsed by, or sponsored by API.

Joechris

Re: Sphere/Api 10 channel Sidecar build
« Reply #8 on: September 20, 2011, 03:49:39 PM »
Hmm, what is the function of the two lamps?
musicians vary +/-9dB depending on mood, drugs, and line-voltage. (PRR)

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #9 on: September 20, 2011, 05:14:35 PM »
Hey Joe..

The # 313 lamps are in series with the power rails.  They are kind of a fuse.  If an output
transistor shorts the lamp lights keeping the power rail from shorting therefor the desk
remains operational and smoke free. 8) Got to love old school ! :)

GARY
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html


gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #10 on: September 20, 2011, 05:16:41 PM »
« Last Edit: September 20, 2011, 09:39:07 PM by gar381 »
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #11 on: September 23, 2011, 02:06:30 AM »
Goodies added to the "Technical Documents (Beta)"

More to come.

GARY
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

hobiesound

Re: Sphere/Api 10 channel Sidecar build
« Reply #12 on: September 23, 2011, 03:43:18 AM »
saw it last night! thanx!

greetings,

Thomas

peterc

Re: Sphere/Api 10 channel Sidecar build
« Reply #13 on: September 23, 2011, 04:43:12 AM »
Quote
The # 313 lamps are in series with the power rails.  They are kind of a fuse.

Is there anything "magic" in these lamps? I cant find the 313 (28v 175mA) locally but I can get some 28v 100mA lamps locally.

I really like the idea of the lamps.....
If opportunity doesn't knock, build a door.

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #14 on: September 28, 2011, 10:46:17 PM »
Beginning the metal work.. :)


I am using ClassicAPIs GREAT console "erector set" parts. ;D ;D

http://classicapi.com/catalog/index.php?cPath=137_139
http://www.classicapi.com/catalog/images/gallery/500_console/metal/assemblies/single_bay_1_bucket/20_loaded.jpg

The Sphere modules are 6.5 inches long so I will have to
cut Some 6061 .125" stock for the side panels as the 500/51 series
stuff is 5.75" long but this will all work out fine.

Jeff is a GENIUS !!

GARY
« Last Edit: September 28, 2011, 10:50:25 PM by gar381 »
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #15 on: October 23, 2011, 12:40:06 AM »
Basic layout..




A little more of the metal work finished.





More to come later

GARY
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html

plumsolly

Re: Sphere/Api 10 channel Sidecar build
« Reply #16 on: October 23, 2011, 03:36:11 AM »
Looking awesome!

Ben

radiance

Re: Sphere/Api 10 channel Sidecar build
« Reply #17 on: October 23, 2011, 12:07:24 PM »
Inspireing!
"Knowing that you are dreaming, however, does not automatically guarantee full rationality.
Then again, being awake doesn't ensure good thinking, either." -  Lynne Levitan

hitchhiker

Re: Sphere/Api 10 channel Sidecar build
« Reply #18 on: October 26, 2011, 08:12:50 PM »
Hi Gary ,

 Cool project.  WRT the M1200B mic pre circuit I would have thought R6 and R7 to be 7R5 but your scheme has 7K5 . Is that a typo?

Lance

gar381

Re: Sphere/Api 10 channel Sidecar build
« Reply #19 on: October 27, 2011, 03:02:14 AM »
Hi Lance

Typo.. 7R5 is correct.  Thanks I'll fix it when I get a chance

GARY
RETIRED.....  from 51yrs in Show Biz

gar2520, gar1731,garAM10,gar918 DOAs at  http://capi-gear.com/catalog/index.php?cPath=71_72
NEW Sphere section  http://gar381interests.com/gar381interests.html


 

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