Notes on old Anchor Audio Extreme XTR6000

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Joined 2018
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Greetings, all. First post; retired lifelong police officer, turbine helicopter geek, as likely to go necrotic as quickly as this thread will.

I hope it helps somebody, somewhere, in whatever your future allows. The following is my way of giving back, to this group, especially.
Thank All Ya'll Very Much, DIYAudionerds. Your existence only enhances life quality.

A Gut, Hack, Mod and Polish Turd-Treat Especial*. A Moldie Oldie, but Goldie.
An Ambitiously Absurd Tale of Transforming Surplus into Slightly Better Surplus.
For Dummies, by a Dummy. *AvE

VICTIM
Anchor Audio Xtreme XTR6000CU1 Sound Reinforcement System, aka Anchor's obsolete, disowned millenial era bas_ard child, a Kitchen Sink Combo Cab, sans batterias.

SITREP:
-2016. Purely ignorant, infatuous impulse purchase. Lubbock TX pawn shop, $100. History unknown. "Very good knick", my Brit brothers might say.
-Clueless (Anchor Audio who?) but absolutely intrigued by its MILSPEC-like construction/design, etc; in a word, outstanding.
-Made in the State of Degeneration nee California in the late '90's, apparently. In spite of this, clearly built to be as indestructible as a Smyrna Glockenspiel.

-**Turns out, Anchor only markets to, essentially, "wedding rentals" alongside their corporate/conference/commercial venue et.al. demograph. Hidden secret in plain sight, hence my highly educated, yet total, ignorance of them.

NERDISTRY:
(representative internal pics will follow, precise photos upon forum request.)
The public marketing-wank brochure specs are readily available, but almost nothing else. Surprisingly scant info. Webwashed.

-The bi-amped thing is bi-bi-amped, QUAD-amped, essentially.
"Proprietary", through-hole mother-daughtercard mezzanine design, aviation-quality assembly. Every PCB crisply marked with pinouts & traces. Impressive and Unusual. HackNmod Freedom Bonus Points=Anchor, Inc.

-An apocryphal tale references a "passive companion speaker", its existence known by few, and seen by fewer....The 6001, allegedly born to suckle from a then-obscure oddity, 4-pole biamplified Speakon Socket. Professional Prescience Bonus Point=Anchor, Inc.
-properly and precisely shielded & separated ERFI noisy-bits.

-"DIVERSITY" UHF wireless RX module, 1-channel. For the tinker bits bin; unneeded, obsolete & unsupported, but a fascinating little RF device, and 12VDC...[more on that later.]
Conjoined to its plate-steel housing, (was) a then-high-end, Belgian Samsung DAC'd, 12VDC OEM CDR used in a few BMWs. Combined, they fill a single DIN or 1/2U space, with intriguing possibilities, as will follow.

GOAL:
Meh. Learning experience, heckuva lot of fun. Flying OClamps fitted, repurposed PDU PCB, etcetcetc. Maximum overdrive mods, because if worth doing, its worth overdoing. No rabbit hole too deep.

Anybody interested in specific details from here, I'll do my best to cover it with specificity. Otherwise, I'll gradually post the processes & pieces I used in coming days.

Eric