Group DIY Pinouts by Matth Jenks

Rack module connector

jenkins2541 — 2013-06-04 20:05:25 UTC

Pin assignments for 51x, the new standard in modular audio gear, plus its legendary outdated parent.

Machine screws for racking modules are 4-40 thread

jenkins2541 — 2013-06-05 18:23:46 UTC

Ideally with an "oval head" and a length of 3/8".

Available from Classic API : http://goo.gl/wtLSy

Available from Redco: http://goo.gl/hEfTj

Thumb-screw style from Mouser: http://goo.gl/lppk0

µRack - 2 spaces of 51x, and expandable

jenkins2541 — 2013-06-05 19:49:34 UTC

More brilliance from Igor...

IJ Research on Facebook

http://goo.gl/Ygjqy

Download documentation

http://goo.gl/REaOe

Official build thread at GroupDIY: Mm. Why Not! Microrack!

http://goo.gl/ij2cZ

About the 51x Alliance 511 rack

jenkins2541 — 2013-06-05 20:45:00 UTC

Build it yourself. Powers 11 modules. Lab thread: http://goo.gl/NdNnl

Side view of card edge

jenkins2541 — 2013-06-06 11:00:39 UTC

Mechanical view with measurements and notch dimensions.

JENSAMP-51X

jenkins2541 — 2013-06-06 16:19:38 UTC

Germainum, German, transformer-coupled, with DI, no longer available. Build thread: http://goo.gl/6J0dm

Salute the few, the proud, the 51x-required.

jenkins2541 — 2013-06-06 16:22:32 UTC

These few forward-thinking, uncompromising products are 51x-required, not just 51x-compatible.

The Albatross

jenkins2541 — 2013-06-06 18:32:07 UTC

Possibly the best kept secret in preamp design. 51x-only. Build thread: http://goo.gl/fiV5A

TG-12413 by Fester (Igor)

jenkins2541 — 2013-06-06 18:42:51 UTC

The venerated zener limiter from EMI.

Info page at DIYRE: http://goo.gl/O6Ih5

Newbies, learn from Chunger

jenkins2541 — 2013-06-06 21:38:22 UTC

A detailed build pictorial from a first-time DIY-er.

Pei-Chung's build thread at Studio 939: http://goo.gl/eurqK

Ian French also contributes some graphic details: http://goo.gl/IfdsR

The 11-space rack bundle: $364.28 in North America

jenkins2541 — 2013-06-07 00:07:26 UTC

From ClassicAPI.com: http://goo.gl/U2yiq

Customers in other territories must purchase through authorized distributors. Find yours: http://goo.gl/NdNnl

Get on it. Supplies from the 3rd production run are dwindling. (A 4th run is unlikely anytime in the near future.)

Pin assignment for XLR connectors

jenkins2541 — 2013-06-07 11:53:19 UTC

Male XLR at receiving end (rack,) Female XLR at power supply.

Using 5-pin DIN jacks to power 51x racks

jenkins2541 — 2013-06-07 18:21:20 UTC

A rugged, cost-effective connector for externally powered devices, pioneered by the BSA™ for studio gear.

This Rean jack withstands >1000 connection cycles, has silver-plated contacts, is rated for 2A, and costs 66¢. Normally employed for dual channel preamps and compressors, it's capable of delivering current to a modest number of 51x racks.