matriachamplification
Wall Thomas
Hello friends of GDIY,
Sometime ago my family and I set the outlandish goal of designing a Tube Compressor Card for Mr. Thompson-Bells ( @ruffrecords ) Custom Tube Console design and, with his encouragement, proceeded to move forward with our research.
Knowing this was no small task we reached out to Mr. Doug Williams (@emrr - one of the worlds foremost experts in vintage audio design) who reccomended the RCA BA-6A as a build that GDIY members might appreciate seeing.
Fortunately we found that Master Audio Blacksmith @DaveP had tackled this build previously and was thoughtful enough to share his build here.
Along with the schematics and manual (that can be found here) we were lucky to find visual aid via images of the BA-6A' guts which we have attached.
Finnally we found an awespiring hard core point-to-point build by @letterbeacon. The rotary switch is especially interesting to learn about.
~~~
Important to our families goals is having our daughter contribute. Western Electric Style Braided Wiring?
A major concern is that controls firmly set during build time need interactive interfacing. We need to integrate these controls into our faceplate design as well as layout our build schemtatics to accomodate these features.
Questions day two
Research Daven Attenuators & Gold Point DIY Builds
Questions day one
What features are set at build time?
How many interactive controls are needed for these features?
Is there a template of the original BA-6A faceplate we can build from?
~~~
We aim to build the BA-6A using new parts or NOS (New Old Stock). With many parts now obsolete, an updated BOM (Bill Of Materials) is needed. For now we will work with what we have ordered pending GDIY approval.
BOM (WIP)
TRANSFORMERS
SOWTER
9835 RCA BA-6A Input Transformer
9770 RCA BA-6A Output Transformer
1195 RCA 86-AL/86-A Compressor Interstage
KNOBS, ATTENUATORS & SWITCHES
GOLD POINT
(Doug Williams) - I'd stick a cheaper Daven 500 or 600 ladder on a BA-6A. Automatic 6dB pad and the loading is built in...
RCA Knobs
Fairchild 660/670 Style Knobs
~~~
Thanks for reading up to this point. More details coming this week.
Wall
Sometime ago my family and I set the outlandish goal of designing a Tube Compressor Card for Mr. Thompson-Bells ( @ruffrecords ) Custom Tube Console design and, with his encouragement, proceeded to move forward with our research.
Knowing this was no small task we reached out to Mr. Doug Williams (@emrr - one of the worlds foremost experts in vintage audio design) who reccomended the RCA BA-6A as a build that GDIY members might appreciate seeing.
Fortunately we found that Master Audio Blacksmith @DaveP had tackled this build previously and was thoughtful enough to share his build here.
Along with the schematics and manual (that can be found here) we were lucky to find visual aid via images of the BA-6A' guts which we have attached.
Finnally we found an awespiring hard core point-to-point build by @letterbeacon. The rotary switch is especially interesting to learn about.
~~~
Important to our families goals is having our daughter contribute. Western Electric Style Braided Wiring?
A major concern is that controls firmly set during build time need interactive interfacing. We need to integrate these controls into our faceplate design as well as layout our build schemtatics to accomodate these features.
Questions day two
How many interactive controls are needed for these features?
Is there a template of the original BA-6A faceplate we can build from?
~~~
We aim to build the BA-6A using new parts or NOS (New Old Stock). With many parts now obsolete, an updated BOM (Bill Of Materials) is needed. For now we will work with what we have ordered pending GDIY approval.
BOM (WIP)
TRANSFORMERS
SOWTER
9835 RCA BA-6A Input Transformer
9770 RCA BA-6A Output Transformer
1195 RCA 86-AL/86-A Compressor Interstage
KNOBS, ATTENUATORS & SWITCHES
(Doug Williams) - I'd stick a cheaper Daven 500 or 600 ladder on a BA-6A. Automatic 6dB pad and the loading is built in...
RCA Knobs
~~~
Thanks for reading up to this point. More details coming this week.
Wall
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