I'm speculating that this unit would originally be deployed between a sensor and a readout or graphing system, and I expect it to handle and pass DC. In passing a little time with the search engine, I found a patent application submitted by Honeywell five years after the build date of this T6GA in which they are attempting to solve the galvanometer frequency limitations (inability to operate in the 25,000 cps range). So, I haven't lofty hopes in regard to frequency response, even though 25 khz is off the charts for most people. I've been seeing a lot of references in the 100 hz range for standard, original purpose application, which DID include mechanical movement, so I'm hopeful that at least something will pass through this thing.
I found another document, published in 1966 under DOD (US Department of Defense, not the effects maker) contract dealing with "the Biological Effect of Blast from Bombs" which is just as gruesome as one would expect, in which the Honeywell T6GA is performing a supporting role between piezoelectric gauge signals and an oscillograph recorder. While they mentioned a low frequency response, I would venture that a percussive blast requires a certain level of prompt reaction, so I really don't know what to expect. I know, I know, just hook something up to it and pass signal already! Patience, we'll get there eventually.
The rear panel male XLR outputs were added by me, bypassing the originally wired Amphenol 20-27p multipin connector. I've yet to plumb male XLR connectors on the front panel as drilling metal in proximity to the actual circuitry hits my bad idea filter really quick.
Gutshot reveals an interesting quality.
Each of the six amplifier channels has a dedicated secondary winding, rectifier and 2000mf cap. Clearly crosstalk was not considered acceptable.
Even ground plane in the circuit is floating. The circuits themselves are pretty simple.
In no particular order: a 2N1395 Ge PNP
MHT1045 Ge PNP
and a 2N534 Ge PNP per channel, a couple mica caps, an axial cap (presumably paper & something), a few carbon comp resistors and what appears to be an opaque DO-7 but may just be a 1960s mystery part.
