SDA-2ATL Project

westmassguy

This was an interesting project. The 2As are 3rd generation, and have a split Crossover. The Stereo Sections were rebuilt with Sonicaps, Mills Resistors, and new Insulating Binding Posts. The TL Modification was done per the CRS+/2B method.
The Dimensional Section was rebuilt using Sonicaps for the Shunts, and Dayton 5% MP Caps for the Sub-Bass Drive Circuits. The existing Spool Inductors were discarded, and New Erse SuperQs installed in their place. All Caps were secured with 3M VHB Tape, and Nylon Wire Ties. The ONLY time I use Hot Glue, is to seal the back of the Binding Posts. Cardas Quad Eutectic Solder was used exclusively.
To consolidate everything and make it easier to install, New Mounting Boards were fabricated from 1/2" MDF, with 1/4-20 Hurricane Nuts and shorter Hex-Head Cap Screws.
The original Circuit Board, New Sub-Bass Drive Caps and Inductors were all mounted to the new boards. To prevent movement and possible rattling or vibrations, highly compressible foam gasket material was installed on the back side of the boards, near the ends.
To complete the rebuild, a new Interconnect Cable was fabricated from Canare 4S11 "Star Quad", with SpeakON Plugs and Sockets. Matching Speaker Cables were made with the same Canare 4S11, and locking Banana Plugs finished them off.

drumminman

Nice work Dave. Very well laid out.

westmassguy

Thank You Sir.

hochpt21

I gotta save my shekels for new X's for my 2a's.

Looks good, Dave.

westmassguy

Thanks

teekay0007

Very nice work, as usual, Dave! Great documentation (pics and write-up) too.

Well done!

Faustin

Looks good Dave. Are they yours or a customers?

westmassguy

Thanks fellas.

westmassguy

Faustin wrote: »

Looks good Dave. Are they yours or a customers?

I've done everything conceivable to mine, except for the veneer. All the internals were finished last year.

PolkieMan

Very impressive and done perfectly Dave.

westmassguy

Thank You Sir

boston1450

Looks good David. Nice & Clean

boston1450

Kind of a stupid question. But when you do all this to the crossovers do you replace all the wires that go to the woofers & tweeters ?

voltz

Excellent work again Brother

westmassguy

Thank you guys.

westmassguy

boston1450 wrote: »

Kind of a stupid question. But when you do all this to the crossovers do you replace all the wires that go to the woofers & tweeters ?

Certain wires I replace, but mostly cut back and re-solder all the connections, as they're usually frayed a bit