SDA-1C Transitional Model Upgrade

westmassguy

This was a very interesting project. From the exterior, they're typical 1Cs, with slab tops and bottoms, and wrap-around grills. The IC was blade/blade, and the cabinet was a modified 1B. Inside, was a heavily modified 1B split crossover. I had reached out to @F1nut and @KennethSwauger for assistance. Apparently, during the transition from 1B to 1C, they not only used leftover cabinets, but crossovers as well. This gave me the chance to use @gimpod 's superb replacement circuit boards. I will say up front, I despise any and all Molex style Connectors. From my years building computers, they leave a lot to be desired.
The owner and I decided the Tweeter and Woofer Harnesses would be soldered directly to the board, and angled spade connectors would be used for the Binding Post Harnesses. All the Inductors were removed from the old Circuit Boards, and the Binding Post Cups were modified, since they had unused spools on the back. Sonicaps and Mills Resistors were chosen. New Erse SuperQ Inductors, SpeakONs, and New Binding Posts rounded out the upgrade. All Caps were hand matched, as well as the old Inductors, which were way off. What a pleasure working with the new boards. New mounting plates with Hurricane nuts were fabricated. Nylon Standoffs with Stainless Cap screws were used to secure everything.

MrBuhl

Outstanding work as always David!

westmassguy

MrBuhl wrote: »

Outstanding work as always David!

Thanks Brother

voltz

Nice Save Dave! Nothing like saving great set of speakers. I think somebody has a smile on their face like I do.

westmassguy

voltz wrote: »

Nice Save Dave! Nothing like saving great set of speakers. I think somebody has a smile on their face like I do.

Thanks Darryl

Faustin

Very nice Dave. Those original c/o's look like a complete cluster f**k. New boards look clean and neat. Even though my 1c's are fine, it makes me want to redo everything with the gimpod boards.

westmassguy

Faustin wrote: »

Very nice Dave. Those original c/o's look like a complete cluster f**k. New boards look clean and neat. Even though my 1c's are fine, it makes me want to redo everything with the gimpod boards.

Hey Bruce, thanks. They are a pleasure to work with.

indyhawg

Very nice work.

westmassguy

indyhawg wrote: »

Very nice work.

Thanks

tophatjohnny

beautiful work from the master in our lives!!

westmassguy

tophatjohnny wrote: »

beautiful work from the master in our lives!!

Thanks Brother

gimpod

VERY NICE!, I like the idea of using spade connectors instead of the MATE-N-LOCK Connectors (These are different than the Molex type used on PC's), I chose to stay with the MATE-N-LOCK Connectors so everyone could use the stock wiring (pug & play) and not mess with putting new terminals on the stock wiring.

But again Very Nice job David.

westmassguy

gimpod wrote: »

VERY NICE!, I like the idea of using spade connectors instead of the MATE-N-LOCK Connectors (These are different than the Molex type used on PC's), I chose to stay with the MATE-N-LOCK Connectors so everyone could use the stock wiring (pug & play) and not mess with putting new terminals on the stock wiring.

But again Very Nice job David.

Thanks Tony.